Updated on 2022/04/16
博士(理学) （ 2006.3 筑波大学 ）
hydrometeorology; atmospheric boundary layer, land-atmosphere interaction, permafrost-vegetation-climate system
permafrost-vegetation-climate system
land-atmosphere interaction
Environmental Science/Agriculture Science / Environmental dynamic analysis
Natural Science / Atmospheric and hydrospheric sciences
Humanities & Social Sciences / Geography / Geography
Life Science / Forest science
Energy, water and CO2 cycles at terrestrial vegetation
Atmosphere-vegetation-permafrost interaction in eastern Siberia
Nagoya University Graduate School of Bioagricultural Sciences Assistant Professor
2018.4
Nagoya University Graduate School of Bioagricultural Sciences Department of Biosphere Resources Science Assistant Professor
2007.5 - 2018.3
筑波大学大学院 生命環境科学研究科 研究員
2007.4
Country：Japan
科学技術振興機構 研究員
2006.4 - 2007.3
Country：Japan
ミリオン株式会社
1998.10 - 2001.3
Country：Japan
University of Tsukuba Graduate School of Life and Environmental Sciences Doctor's program in Geoenvironmental Sciences
2003.4 - 2006.3
Country： Japan
University of Tsukuba Graduate School, Division of Environmental Science Master's program in Environmental Sciences
2001.4 - 2003.3
Country： Japan
University of Tsukuba Second Cluster of College College of Comparative Culture
1994.4 - 1998.3
Country： Japan
水文・水資源学会
日本気象学会
Japan Geoscience Union
American Geophysical Union
水文・水資源学会 日本地球惑星科学連合対応委員会
2018.10
Committee type：Academic society
JapanFlux 運営委員会
2018.4
地球惑星科学連合 大会運営委員会
2015 - 2020
Committee type：Academic society
水文・水資源学会 情報基盤システム委員
2014.10 - 2016.9
Committee type：Academic society
地球惑星科学連合 教育検討委員会
2014 - 2016
Committee type：Academic society
Nagano Hirohiko, Kotani Ayumi, Mizuochi Hiroki, Ichii Kazuhito, Kanamori Hironari, Hiyama Tetsuya
ENVIRONMENTAL RESEARCH LETTERS Vol. 17 ( 2 ) 2022.2
The ABCflux database: Arctic-boreal CO2 flux observations and ancillary information aggregated to monthly time steps across terrestrial ecosystems
Virkkala Anna-Maria, Natali Susan M., Rogers Brendan M., Watts Jennifer D., Savage Kathleen, Connon Sara June, Mauritz Marguerite, Schuur Edward A. G., Peter Darcy, Minions Christina, Nojeim Julia, Commane Roisin, Emmerton Craig A., Goeckede Mathias, Helbig Manuel, Holl David, Iwata Hiroki, Kobayashi Hideki, Kolari Pasi, Lopez-Blanco Efren, Marushchak Maija E., Mastepanov Mikhail, Merbold Lutz, Parmentier Frans-Jan W., Peichl Matthias, Sachs Torsten, Sonnentag Oliver, Ueyama Masahito, Voigt Carolina, Aurela Mika, Boike Julia, Celis Gerardo, Chae Namyi, Christensen Torben R., Bret-Harte M. Syndonia, Dengel Sigrid, Dolman Han, Edgar Colin W., Elberling Bo, Euskirchen Eugenie, Grelle Achim, Hatakka Juha, Humphreys Elyn, Jarveoja Jarvi, Kotani Ayumi, Kutzbach Lars, Laurila Tuomas, Lohila Annalea, Mammarella Ivan, Matsuura Yojiro, Meyer Gesa, Nilsson Mats B., Oberbauer Steven F., Park Sang-Jong, Petrov Roman, Prokushkin Anatoly S., Schulze Christopher, St Louis Vincent L., Tuittila Eeva-Stiina, Tuovinen Juha-Pekka, Quinton William, Varlagin Andrej, Zona Donatella, Zyryanov Viacheslav I.
EARTH SYSTEM SCIENCE DATA Vol. 14 ( 1 ) page： 179 - 208 2022.1
Seasonality in Human Interest in Berry Plants Detection by Google Trends Reviewed
Ayumi Kotani, Nagai Shin, Shunsuke Tei, Andrey Makarov, Tuyara Gavrilyeva
Frontiers in Forest Global Change Vol. 4 page： 688835 2021.9
Geographical, Climatological, and Biological Characteristics of Tree Radial Growth Response to Autumn Climate Change Reviewed
Shunsuke Tei, Ayumi Kotani, Atsuko Sugimoto, Nagai Shin
Frontiers in Forest Global Change Vol. 4 page： 687749 2021.8
Mizuochi Hiroki, Iijima Yoshihiro, Nagano Hirohiko, Kotani Ayumi, Hiyama Tetsuya
REMOTE SENSING Vol. 13 ( 2 ) page： 1 - 19 2021.1
Pastorello G.
Scientific Data Vol. 8 ( 1 ) 2021
Shunsuke Tei, Tomoki Morozumi, Ayumi Kotani, Shinya Takano, Atsuko Sugimoto, Shin Miyazaki, Ryo Shingubara, Rong Fan, Roman Petrov, Egor Starostin, Ruslan Shakhmatov, Aleksandr Nogovitcyn, Trofim Maximov
Polar Science 2021
Hiyama T.
Polar Science 2021
Detection of year-to-year spring and autumn bio-meteorological variations in siberian ecosystems
Nagai Shin, Kotani Ayumi, Morozumi Tomoki, Kononov Alexander V, Petrov Roman E, Shakhmatov Ruslan, Ohta Takeshi, Sugimoto Atsuko, Maximov Trofim C, Suzuki Rikie, Tei Shunsuke
POLAR SCIENCE Vol. 25 2020.9
Direct measurement of leaf area index in a deciduous needle-leaf forest, eastern Siberia
Shin Nagai, Kotani Ayumi, Sato Tomonori, Sugimoto Atsuko, Maximov Trofim C, Nogovitcyn Aleksandr, Miyamoto Yumiko, Kobayashi Hideki, Tei Shunsuke
POLAR SCIENCE Vol. 25 2020.9
The FLUXNET2015 dataset and the ONEFlux processing pipeline for eddy covariance data
Pastorello Gilberto, Trotta Carlo, Canfora Eleonora, Chu Housen, Christianson Danielle, Cheah You-Wei, Poindexter Cristina, Chen Jiquan, Elbashandy Abdelrahman, Humphrey Marty, Isaac Peter, Polidori Diego, Ribeca Alessio, van Ingen Catharine, Zhang Leiming, Amiro Brian, Ammann Christof, Arain M. Altaf, Ardo Jonas, Arkebauer Timothy, Arndt Stefan K., Arriga Nicola, Aubinet Marc, Aurela Mika, Baldocchi Dennis, Barr Alan, Beamesderfer Eric, Marchesini Luca Belelli, Bergeron Onil, Beringer Jason, Bernhofer Christian, Berveiller Daniel, Billesbach Dave, Black Thomas Andrew, Blanken Peter D., Bohrer Gil, Boike Julia, Bolstad Paul V., Bonal Damien, Bonnefond Jean-Marc, Bowling David R., Bracho Rosvel, Brodeur Jason, Bruemmer Christian, Buchmann Nina, Burban Benoit, Burns Sean P., Buysse Pauline, Cale Peter, Cavagna Mauro, Cellier Pierre, Chen Shiping, Chini Isaac, Christensen Torben R., Cleverly James, Collalti Alessio, Consalvo Claudia, Cook Bruce D., Cook David, Coursolle Carole, Cremonese Edoardo, Curtis Peter S., D'Andrea Ettore, da Rocha Humberto, Dai Xiaoqin, Davis Kenneth J., De Cinti Bruno, de Grandcourt Agnes, De Ligne Anne, De Oliveira Raimundo C., Delpierre Nicolas, Desai Ankur R., Di Bella Carlos Marcelo, di Tommasi Paul, Dolman Han, Domingo Francisco, Dong Gang, Dore Sabina, Duce Pierpaolo, Dufrene Eric, Dunn Allison, Dusek Jiri, Eamus Derek, Eichelmann Uwe, ElKhidir Hatim Abdalla M., Eugster Werner, Ewenz Cacilia M., Ewers Brent, Famulari Daniela, Fares Silvano, Feigenwinter Iris, Feitz Andrew, Fensholt Rasmus, Filippa Gianluca, Fischer Marc, Frank John, Galvagno Marta, Gharun Mana, Gianelle Damiano, Gielen Bert, Gioli Beniamino, Gitelson Anatoly, Goded Ignacio, Goeckede Mathias, Goldstein Allen H., Gough Christopher M., Goulden Michael L., Graf Alexander, Griebel Anne, Gruening Carsten, Gruenwald Thomas, Hammerle Albin, Han Shijie, Han Xingguo, Hansen Birger Ulf, Hanson Chad, Hatakka Juha, He Yongtao, Hehn Markus, Heinesch Bernard, Hinko-Najera Nina, Hoertnagl Lukas, Hutley Lindsay, Ibrom Andreas, Ikawa Hiroki, Jackowicz-Korczynski Marcin, Janous Dalibor, Jans Wilma, Jassal Rachhpal, Jiang Shicheng, Kato Tomomichi, Khomik Myroslava, Klatt Janina, Knohl Alexander, Knox Sara, Kobayashi Hideki, Koerber Georgia, Kolle Olaf, Kosugi Yoshiko, Kotani Ayumi, Kowalski Andrew, Kruijt Bart, Kurbatova Julia, Kutsch Werner L., Kwon Hyojung, Launiainen Samuli, Laurila Tuomas, Law Bev, Leuning Ray, Li Yingnian, Liddell Michael, Limousin Jean-Marc, Lion Marryanna, Liska Adam J., Lohila Annalea, Lopez-Ballesteros Ana, Lopez-Blanco Efren, Loubet Benjamin, Loustau Denis, Lucas-Moffat Antje, Lueers Johannes, Ma Siyan, Macfarlane Craig, Magliulo Vincenzo, Maier Regine, Mammarella Ivan, Manca Giovanni, Marcolla Barbara, Margolis Hank A., Marras Serena, Massman William, Mastepanov Mikhail, Matamala Roser, Matthes Jaclyn Hatala, Mazzenga Francesco, McCaughey Harry, McHugh Ian, McMillan Andrew M. S., Merbold Lutz, Meyer Wayne, Meyers Tilden, Miller Scott D., Minerbi Stefano, Moderow Uta, Monson Russell K., Montagnani Leonardo, Moore Caitlin E., Moors Eddy, Moreaux Virginie, Moureaux Christine, Munger J. William, Nakai Taro, Neirynck Johan, Nesic Zoran, Nicolini Giacomo, Noormets Asko, Northwood Matthew, Nosetto Marcelo, Nouvellon Yann, Novick Kimberly, Oechel Walter, Olesen Jorgen Eivind, Ourcival Jean-Marc, Papuga Shirley A., Parmentier Frans-Jan, Paul-Limoges Eugenie, Pavelka Marian, Peichl Matthias, Pendall Elise, Phillips Richard P., Pilegaard Kim, Pirk Norbert, Posse Gabriela, Powell Thomas, Prasse Heiko, Prober Suzanne M., Rambal Serge, Rannik Ullar, Raz-Yaseef Naama, Reed David, de Dios Victor Resco, Restrepo-Coupe Natalia, Reverter Borja R., Roland Marilyn, Sabbatini Simone, Sachs Torsten, Saleska Scott R., Sanchez-Canete Enrique P., Sanchez-Mejia Zulia M., Schmid Hans Peter, Schmidt Marius, Schneider Karl, Schrader Frederik, Schroder Ivan, Scott Russell L., Sedlak Pavel, Serrano-Ortiz Penelope, Shao Changliang, Shi Peili, Shironya Ivan, Siebicke Lukas, Sigut Ladislav, Silberstein Richard, Sirca Costantino, Spano Donatella, Steinbrecher Rainer, Stevens Robert M., Sturtevant Cove, Suyker Andy, Tagesson Torbern, Takanashi Satoru, Tang Yanhong, Tapper Nigel, Thom Jonathan, Tiedemann Frank, Tomassucci Michele, Tuovinen Juha-Pekka, Urbanski Shawn, Valentini Riccardo, van der Molen Michiel, van Gorsel Eva, van Huissteden Ko, Varlagin Andrej, Verfaillie Joseph, Vesala Timo, Vincke Caroline, Vitale Domenico, Vygodskaya Natalia, Walker Jeffrey P., Walter-Shea Elizabeth, Wang Huimin, Weber Robin, Westermann Sebastian, Wille Christian, Wofsy Steven, Wohlfahrt Georg, Wolf Sebastian, Woodgate William, Li Yuelin, Zampedri Roberto, Zhang Junhui, Zhou Guoyi, Zona Donatella, Agarwal Deb, Biraud Sebastien, Torn Margaret, Papale Dario
SCIENTIFIC DATA Vol. 7 ( 1 ) 2020.7
Wang Lusha, Kotani Ayumi, Tanaka Takafumi, Ohta Takeshi
THEORETICAL AND APPLIED CLIMATOLOGY Vol. 141 ( 1-2 ) page： 715 - 728 2020.7
Nakai Taro, Hiyama Tetsuya, Petrov Roman E., Kotani Ayumi, Ohta Takeshi, Maximov Trofim C.
AGRICULTURAL AND FOREST METEOROLOGY Vol. 282-283 2020.3
Wang Lusha, Kotani Ayumi, Tanaka Takafumi, Ohta Takeshi
SOLA Vol. 16 ( 0 ) page： 259 - 264 2020
Tei Shunsuke, Sugimoto Atsuko, Yonenobu Hitoshi, Kotani Ayumi, Maximov Trofim C.
ECOHYDROLOGY Vol. 12 ( 8 ) 2019.12
Tei Shunsuke, Sugimoto Atsuko, Kotani Ayumi, Ohta Takeshi, Morozumi Tomoki, Saito Soma, Hashiguchi Shuhei, Maximov Trofim
POLAR SCIENCE Vol. 21 page： 146 - 157 2019.9
Kotani Ayumi, Saito Atsushi, Kononov Alexander V, Petrov Roman E, Maximov Trofim C, Iijima Yoshihiro, Ohta Takeshi
AGRICULTURAL AND FOREST METEOROLOGY Vol. 265 page： 295 - 309 2019.2
Regional evaluation on permafrost environmental change in eastern Eurasia
Iijima Yoshihiro, Ishikawa Mamoru, Ohta Takeshi, Kotani Ayumi, Saito Hitoshi, Hotaek Park, Hiyama Tetsuya
Summaries of JSSI and JSSE Joint Conference on Snow and Ice Research Vol. 2018 ( 0 ) page： 56 - 56 2018
Active layer thickness at permafrost larch forest in eastern Siberia
Kotani Ayumi, Hiyama Tetsuya, Ohta Takeshi, Maximov Trofim C
Proceeding of Annual Conference Vol. 31 ( 0 ) 2018
Reconciliation of top-down and bottom-up CO2 fluxes in Siberian larch forest
Takata Kumiko, Patra Prabir K., Kotani Ayumi, Mori Junko, Belikov Dmitry, Ichii Kazuhito, Saeki Tazu, Ohta Takeshi, Saito Kazuyuki, Ueyama Masahito, Ito Akihiko, Maksyutov Shamil, Miyazaki Shin, Burke Eleanor J., Ganshin Alexander, Iijima Yoshihiro, Ise Takeshi, Machiya Hirokazu, Maximov Trofim C., Niwa Yosuke, O'ishi Ryo'ta, Park Hotaek, Sasai Takahiro, Sato Hisashi, Tei Shunsuke, Zhuravlev Ruslan, Machida Toshinobu, Sugimoto Atsuko, Aoki Shuji
ENVIRONMENTAL RESEARCH LETTERS Vol. 12 ( 12 ) 2017.12
Ichii Kazuhito, Ueyama Masahito, Kondo Masayuki, Saigusa Nobuko, Kim Joon, Carmelita Alberto Ma., Ardoe Jonas, Euskirchen Eugenie S., Kang Minseok, Hirano Takashi, Joiner Joanna, Kobayashi Hideki, Marchesini Luca Belelli, Merbold Lutz, Miyata Akira, Saitoh Taku M., Takagi Kentaro, Varlagin Andrej, Bret-Harte M. Syndonia, Kitamura Kenzo, Kosugi Yoshiko, Kotani Ayumi, Kumar Kireet, Li Sheng-Gong, Machimura Takashi, Matsuura Yojiro, Mizoguchi Yasuko, Ohta Takeshi, Mukherjee Sandipan, Yanagi Yuji, Yasuda Yukio, Zhang Yiping, Zhao Fenghua
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES Vol. 122 ( 4 ) page： 767 - 795 2017.4
Analysing the origin of rain- and subsurface water in seasonal wetlands of north-central Namibia
Hiyama Tetsuya, Kanamori Hironari, Kambatuku Jack R., Kotani Ayumi, Asai Kazuyoshi, Mizuochi Hiroki, Fujioka Yuichiro, Iijima Morio
ENVIRONMENTAL RESEARCH LETTERS Vol. 12 ( 3 ) 2017.3
Impact of rice cultivation on evapotranspiration in small seasonal wetlands of north-central Namibia
Kotani Ayumi, Hiyama Tetsuya, Ohta Takeshi, Hanamura Miho, R Kambatuku Jack, K Awala Simon, Iijima Morio
Hydrological Research Letters Vol. 11 ( 2 ) page： 134 - 140 2017
Effect of variation of environmental factors on forest evapotranspiration : Comparison in eastern Siberian larch forests
Nakatsubo Minoru, Kotani Ayumi, Ohta takeshi, Iijima Yoshihiro, Maximov Trofim C., Kononov Alexander V.
The Japanese Forest Society Congress Vol. 128 ( 0 ) page： 124 - 124 2017
Urakawa Rieko, Ohte Nobuhito, Shibata Hideaki, Isobe Kazuo, Tateno Ryunosuke, Oda Tomoki, Hishi Takuo, Fukushima Keitaro, Inagaki Yoshiyuki, Hirai Keizo, Oyanagi Nobuhiro, Nakata Makoto, Toda Hiroto, Kenta Tanaka, Kuroiwa Megumi, Watanabe Tsunehiro, Fukuzawa Karibu, Tokuchi Naoko, Ugawa Shin, Enoki Tsutomu, Nakanishi Asami, Saigusa Nobuko, Yamao Yukio, Kotani Ayumi
FOREST ECOLOGY AND MANAGEMENT Vol. 361 page： 382 - 396 2016.2
Persistence and memory timescales in root-zone soil moisture dynamics
Ghannam Khaled, Nakai Taro, Paschalis Athanasios, Oishi Christopher A., Kotani Ayumi, Igarashi Yasunori, Kumagai Tomo'omi, Katul Gabriel G.
WATER RESOURCES RESEARCH Vol. 52 ( 2 ) page： 1427 - 1445 2016.2
The GRENE-TEA model intercomparison project (GTMIP) Stage 1 forcing data set
Sueyoshi T.
Earth System Science Data Vol. 8 ( 1 ) page： 1 - 14 2016.1
van der Molen M. K., de Jeu R. A. M., Wagner W., van der Velde I. R., Kolari P., Kurbatova J., Varlagin A., Maximov T. C., Kononov A. V., Ohta T., Kotani A., Krol M. C., Peters W.
HYDROLOGY AND EARTH SYSTEM SCIENCES Vol. 20 ( 2 ) page： 605 - 624 2016
The GRENE-TEA model intercomparison project (GTMIP) Stage 1 forcing data set
Sueyoshi T., Saito K., Miyazaki S., Mori J., Ise T., Arakida H., Suzuki R., Sato A., Iijima Y., Yabuki H., Ikawa H., Ohta T., Kotani A., Hajima T., Sato H., Yamazaki T., Sugimoto A.
EARTH SYSTEM SCIENCE DATA Vol. 8 ( 1 ) page： 1-14 2016
Van Der Molen M.
Hydrology and Earth System Sciences Discussions Vol. 12 ( 9 ) page： 9003 - 9054 2015.9
Biogeochemical nitrogen properties of forest soils in the Japanese archipelago
Urakawa Rieko, Ohte Nobuhito, Shibata Hideaki, Tateno Ryunosuke, Hishi Takuo, Fukushima Keitaro, Inagaki Yoshiyuki, Hirai Keizo, Oda Tomoki, Oyanagi Nobuhiro, Nakata Makoto, Toda Hiroto, Kenta Tanaka, Fukuzawa Karibu, Watanabe Tsunehiro, Tokuchi Naoko, Nakaji Tatsuro, Saigusa Nobuko, Yamao Yukio, Nakanishi Asami, Enoki Tsutomu, Ugawa Shin, Hayakawa Atsushi, Kotani Ayumi, Kuroiwa Megumi, Isobe Kazuo
ECOLOGICAL RESEARCH Vol. 30 ( 1 ) page： 1-2 2015.1
The GRENE-TEA model intercomparison project (GTMIP): overview and experiment protocol for Stage 1
Miyazaki S., Saito K., Mori J., Yamazaki T., Ise T., Arakida H., Hajima T., Iijima Y., Machiya H., Sueyoshi T., Yabuki H., Burke E. J., Hosaka M., Ichii K., Ikawa H., Ito A., Kotani A., Matsuura Y., Niwano M., Nitta T., O'ishi R., Ohta T., Park H., Sasai T., Sato A., Sato H., Sugimoto A., Suzuki R., Tanaka K., Yamaguchi S., Yoshimura K.
Geoscientific Model Development Vol. 8 ( 9 ) page： 2841 - 2856 2015
Radiative and precipitation controls on root zone soil moisture spectra
Nakai Taro, Katul Gabriel G, Kotani Ayumi, Igarashi Yasunori, Ohta Takeshi, Suzuki Masakazu, Kumagai Tomo'omi
GEOPHYSICAL RESEARCH LETTERS Vol. 41 ( 21 ) page： 7546 - 7554 2014.11
Radiative and precipitation controls on root zone soil moisture spectra Reviewed
Nakai, T., Katul, G.G., Kotani, A., Igarashi, Y., Ohta, T., Suzuki, M., Kumagai, T.
Geophysical Research Letters Vol. 41 page： 7546-7554 2014.11
Ohta Takeshi, Kotani Ayumi, Iijima Yoshihiro, Maximov Trofim C., Ito Syogo, Hanamura Miho, Kononov Alexander V., Maximov Ayal P.
AGRICULTURAL AND FOREST METEOROLOGY Vol. 188 page： 64 - 75 2014.5
Iijima, Y, Ohta, T, Kotani, A, Fedorov, A, Kodama, Y, Maximov, T
Ecohydrology Vol. 7 ( 2 ) page： 177 - 187 2014.4
Kotani, A, Kononov, A, Ohta, T, Maximov, T
Ecohydrology Vol. 7 ( 2 ) page： 209 - 225 2014.4
International Joint Conference of 11th AsiaFlux International Workshop, 3rd HESSS and 14th Annual Meeting of KSAFM “Communicating Science to Society: Coping with Climate Extremes for Resilient Ecological-Societal Systems”の報告
丸山篤志, 宮崎真, 小谷亜由美, 栗林正俊, 斎藤琢, 小野圭介
生物と気象 Vol. 14 page： D1-7 2014.1
Effects of waterlogging on water and carbon dioxide fluxes and environmental variables in a Siberian larch forest Reviewed
Ohta, T., Kotani, A., Iijima, Y., Maximov, T., Ito, S., Hanamura, M., Kononov, A., Maximov, A.
Agricultural and Forest Meteorology Vol. 188 page： 64-75 2014.1
Water, Energy and Carbon Cycle in the Larch Wood of East Siberia
OHTA Takeshi, KOTANI Ayumi
Water Science Vol. 58 ( 5 ) page： 43 - 73 2014
Primary factors in interannual variation of latent heat fluxes from overstory and understory in Siberian larch forest
Saito Atsushi, Kotani Ayumi, Ohta Takeshi, Iijima Yoshihiro
The Japanese Forest Society Congress Vol. 125 ( 0 ) page： 146 - 146 2014
Changes in eco-hydrological systems under recent climate change in eastern Siberia Reviewed
Hiyama TETSUYA, Ohta TAKESHI, Sugimoto ATSUKO, Yamazaki TAKESHI, Oshima KAZUHIRO, Yonenobu HITOSHI, Yamamoto KAZUKIYO, Kotani AYUMI, Park HOTAEK, Kodama Yuji, ther
IAHS Publication Vol. 360 page： 155 - 160 2013.1
Changes in eco-hydrological systems under recent climate change in eastern Siberia
Hiyama Tetsuya, Ohta Takeshi, Sugimoto Atsuko, Yamazaki Takeshi, Oshima Kazuhiro, Yonenobu Hitoshi, Yamamoto Kazukiyo, Kotani Ayumi, Park Hotaek, Kodama Yuji, Hatta Shigemi, Fedorov Alexander N., Maximov Trofim C.
COLD AND MOUNTAIN REGION HYDROLOGICAL SYSTEMS UNDER CLIMATE CHANGE: TOWARDS IMPROVED PROJECTIONS Vol. 360 page： 155 - 160 2013
Changes in eco-hydrological systems under recent climate change in eastern Siberia
Hiyama T.
IAHS-AISH Proceedings and Reports Vol. 360 page： 155 - 160 2013
Interannual variation of evapotranspiration in an eastern Siberian larch forest
Xue Bao-Lin, Komatsu Hikaru, Kumagai Tomo'omi, Kotani Ayumi, Otsuki Kyoichi, Ohta Takeshi
HYDROLOGICAL PROCESSES Vol. 26 ( 15 ) page： 2360 - 2368 2012.7
Seasonal variability of scalar turbulent transport above forest canopy
Kotani Ayumi, Hamazaki Shunki, Ohta Takeshi
Proceeding of Annual Conference Vol. 25 ( 0 ) page： 276 - 276 2012
Spatial variations in evapotranspiration over East Asian forest sites. I. Evapotranspiration and decoupling coefficient Reviewed
Khatun R, Ohta T, Kotani A, Asanuma J, Gamo M, Han S, Hirano T, Nakai Y, Saigusa N, Takagi K, Wang H, Yoshifuji N
Hydorological Rearch Letters ( 5 ) page： 83-87 2011
Spatial variations in evapotranspiration over East Asian forest sites. II Surface conductance and aerodynamic conductance Reviewed
Khatun R, Ohta T, Kotani A, Asanuma J, Gamo M, Han S, Hirano T, Nakai Y, Saigusa N, Takagi K, Wang H, Yoshifuji N
Hydorological Rearch Letters ( 5 ) page： 88-92 2011
Khatun Rehana, Ohta Takeshi, Kotani Ayumi, Asanuma Jun, Gamo Minoru, Han Shijie, Hirano Takashi, Nakai Yuichiro, Saigusa Nobuko, Takagi Kentaro, Wang Huimin, Yoshifuji Natsuko
Hydrological Research Letters Vol. 5 ( 5 ) page： 83 - 87 2011
Evapotranspiration over larch forest in southern area of eastern Siberia
Kotani Ayumi, Ohta Takeshi, Maximov Trofim
The Japanese Forest Society Congress Vol. 123 ( 0 ) page： Pb083 - Pb083 2011
Khatun Rehana, Ohta Takeshi, Kotani Ayumi, Asanuma Jun, Gamo Minoru, Han Shijie, Hirano Takashi, Nakai Yuichiro, Saigusa Nobuko, Takagi Kentaro, Wang Huimin, Yoshifuji Natsuko
Hydrological Research Letters Vol. 5 ( 5 ) page： 88 - 92 2011
Yoshida Megumi, Ohta Takeshi, Kotani Ayumi, Maximov Trofim
JOURNAL OF HYDROLOGY Vol. 395 ( 3-4 ) page： 180 - 189 2010.12
Environmental factors controlling forest evapotranspiration and surface conductance on a multi-temporal scale in growing seasons of a Siberian larch forest Reviewed
Yoshida, M., Ohta, T., Kotani, A., and Maximov,T.
Journal of Hydrology 2010.1
Concise formulae for the atmospheric correction of hemisphericalthermal radiation measured near the ground surface Reviewed
A Kotani and M Sugita
Water Resourses Research Vol. 45 page： W07413 2009.8
How universal is the C function in the bulk atmospheric boundary layer similarity approach for estimating surface sensible heat flux? Reviewed
M. Sugita, H. Kato, A. Kotani, M. Toda
Water resources research Vol. 45 page： W07418 2009.8
Sugita Michiaki, Kato Hidekazu, Kotani Ayumi, Toda Motomu
WATER RESOURCES RESEARCH Vol. 45 ( 7 ) 2009.7
Kotani Ayumi, Sugita Michiaki
WATER RESOURCES RESEARCH Vol. 45 ( 7 ) 2009.7
Response of gross ecosystem productivity, light use efficiency, and water use efficiency of Mongolian steppe to seasonal variations in soil moisture
Li Sheng-Gong, Eugster Werner, Asanuma Jun, Kotani Ayumi, Davaa Gombo, Oyunbaatar Dambaravjaa, Sugita Michiaki
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES Vol. 113 ( G1 ) 2008.3
Disturbances and their corrections in space observation with GOSAT fourier transform spectrometer
Aoki T.
Proceedings of SPIE - The International Society for Optical Engineering Vol. 6748 2007.12
Evapotranspiration from a Mongolian steppe under grazing and its environmental constraints
Li Sheng-Gong, Asanuma Jun, Kotani Ayumi, Davaa Gombo, Oyunbaatar Dambaravjaa
JOURNAL OF HYDROLOGY Vol. 333 ( 1 ) page： 133 - 143 2007.1
Vertical distribution of stable isotopic composition in atmospheric water vapor and subsurface water in grassland and forest sites, eastern Mongolia
Tsujimura Maki, Sasaki Lisa, Yamanaka Tsutomu, Sugimoto Atsuko, Li Sheng-Gong, Matsushima Dai, Kotani Ayumi, Saandar Mijiddorj
JOURNAL OF HYDROLOGY Vol. 333 ( 1 ) page： 35 - 46 2007.1
Variance methods to estimate regional heat fluxes with aircraft measurements in the convective boundary layer
Kotani Ayumi, Sugita Michiaki
JOURNAL OF HYDROLOGY Vol. 333 ( 1 ) page： 68 - 85 2007.1
Variance Methods to Estimate Regional Heat Fluxes with Aircraft Measurements in Convective Boundary Layer Reviewed
Kotani,A. and Sugita,M.
Journal of Hydrology Vol. 333 ( 1 ) page： 68-85 2007
Parameterization of heat transfer for sparse vegetation in the northeathern Mongolia
kotani ayumi, sugita michiaki
Proceeding of Annual Conference Vol. 20 ( 0 ) page： 82 - 82 2007
Energy partitioning and its biophysical controls above a grazing steppe in central Mongolia
Li Sheng-Gong, Eugster Werner, Asanuma Jun, Kotani Ayumi, Davaa Gombo, Oyunbaatar Dambaravjaa, Sugita Michiaki
AGRICULTURAL AND FOREST METEOROLOGY Vol. 137 ( 1-2 ) page： 89 - 106 2006.3
Parameterization of Heat Transfer between the Land Surface and the Atmosphere in Mongolian Steppe
Kotani, A., and M. Sugita
Proceedings of the 4th International Workshop on Terrestrial Change in Mongolia page： 5.3 2006
Seasonal variation of surface fluxes and scalar roughness of suburban land covers
Kotani A, Sugita M
AGRICULTURAL AND FOREST METEOROLOGY Vol. 135 ( 1-4 ) page： 1 - 21 2005.12
Net ecosystem carbon dioxide exchange over grazed steppe in central Mongolia
Li SG, Asanuma J, Eugster W, Kotani A, Liu JJ, Urano T, Oikawa T, Davaa G, Oyunbaatar D, Sugita M
GLOBAL CHANGE BIOLOGY Vol. 11 ( 11 ) page： 1941 - 1955 2005.11
Year-round measurements of net ecosystem CO2 flux over a montane larch forest in Mongolia
Li SG, Asanuma J, Kotani A, Eugster W, Davaa G, Oyunbaatar D, Sugita M
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES Vol. 110 ( D9 ) 2005.5
Seasonal Variation of Surface Fluxes and Scalar Roughness of Suburban Land Covers Reviewed
A. Kotani and M. Sugita
Agricultural and Forest Meteorology Vol. 135 page： 1-21 2005
Aircraft Measurements to Estimate Surface Heat Fluxes from the Mixed Layer Variance Methods over Semi-arid Grassland
Kotani, A., and M. Sugita
Bulletin of the Terrestrial Environment Research Center, University of Tsukuba Vol. 5 ( Suppl ) page： 37-39 2005
Estimation of Surface Heat Fluxes around Kherlen River Basin by Airborne Turbulence Data
Kotani, A., and M. Sugita
Proceedings of the 1st International Symposium on Terrestrial and Climate Change in Mongolia page： 147-151 2005
Net Ecosystem Carbon Dioxide Exchange over Grazed Steppe in Central Mongolia Reviewed
Li, S.-G., J. Asanuma, W. Eugster, A. Kotani, J.-J. Liu, T. Urano, T. Oikawa, G. Davaa, D. Oyunbaatar, and M. Sugita
Global Change Biology Vol. 11 page： 1941-1955 2005
Year-round Measurements of Net Ecosystem CO2 Flux over a Montane Larch Forest in Mongolia Reviewed
Li, S.-G., J. Asanuma, A. Kotani, G. Davaa, D. Oyunbaatar, and M. Sugita
Journal of Geophysical Research Vol. 110 page： D09303 2005
朝岡 良浩, 飯田 真一, 岡澤 毅, 小野 圭介, 金子 紫延, 熊坂 和宏, 畔柳 剛, 小谷 亜由美, 甲山 治, 小久保 武, 佐山 敬洋, 出世 ゆかり, 須賀 可人, 瀬戸 心太, 相馬 一義, 大楽 浩司, 高垣 佳永子, 土屋 修一, 谷口 健司, 手計 太一, 鳥羽 妙, 芳賀 弘和, 服部 美紀, 花崎 直太, 廣瀬 茂樹, 馬籠 純, 松尾 奈緒子, 山田 朋人, 芳村 圭
水文・水資源学会誌 = JOURNAL OF JAPAN SOCIETY OF HYDROLOGY & WATER RESOURCES Vol. 17 ( 4 ) page： 434-436 2004.7
Aircraft Turbulence Measurements to Estimate Surface Heat Fluxes from the Mixed Layer Variance Methods over Semi-arid Grassland
Kotani, A., and M. Sugita, M
Proceedings CD-ROM of The 6th International Study Conference on GEWEX in Asia and GAME Vol. GAME CD-ROM Publication No. 11 page： T1AK28Jul04161647 2004
陸域環境研究センター気象観測塔における広域熱・水蒸気・ＣＯ2の測定
小谷亜由美，杉田倫明
筑波大学陸域環境研究センター報告 Vol. 4 page： 103-108 2003
Water-Carbon Dynamics in Eastern Siberia. Series: Ecological Studies. International journal
Ohta, T., T. Hiyama, Y. Iijima, A. Kotani, T.C. Maximov（ Role： Joint editor）
Springer 2019.7 （ ISBN:978-981-13-6317-7 ）
Energy-water budget analysis of an Arctic terrestrial models intercomparison GTMIP
斉藤和之, 森淳子, 町屋広和, 宮崎真, 伊勢武史, 末吉哲雄, 山崎剛, 飯島慈裕, 伊川浩樹, 市井和仁, 伊藤昭彦, 伊藤昭彦, 大石龍太, 太田岳史, 堅田元喜, 小谷亜由美, 佐々井崇博, 佐藤篤司, 佐藤永, 杉本敦子, 鈴木力英, 田中克典, 新田友子, 庭野匡思, BURKE Eleanor, PARK Hotaek, 山口悟
雪氷 Vol. 80 ( 2 ) 2018
Implementation of North-eastern Eurasia PMM Terrestrial UNited validation Experiment (NEPTUNE)
Gomboluudev P., Oyunbaatar D., IIJIMA Yoshihiro, AIDA Kentaro, ASANUMA Jun, ISHIKAWA Mamoru, IWASAKI Hiroyuki, OHTA Takeshi, KOTANI Ayumi, SATO Tomonori, SHINODA Masato, SUGIURA Konosuke, PARK Hotaek, HIYAMA Tetsuya, HIRASAWA Naohiko, KANEKO Yuki, HORI Masahiro
( 43 ) page： 15 - 25 2017.9
The Studies of the Water/Energy/Carbon Cycles in an Eastern Siberia
( 89 ) page： 38 - 44 2014.1
D360 東シベリアカラマツ林における、長期湿害に伴う炭素・水循環機能の変化(大気-陸面間の水・エネルギー・炭素フラックスに関する最新研究2014,スペシャル・セッション)
斉藤 淳志, 小谷 亜由美, 太田 岳史, Maximov Trofim C., Kononov Alexander V.
大会講演予講集 Vol. 106 page： 597 - 597 2014
D351 常緑落葉混交林における二酸化炭素交換量と吸収期間の年変動(大気-陸面間の水・エネルギー・炭素フラックスに関する最新研究2014,スペシャル・セッション)
小谷 亜由美, 太田 岳史
大会講演予講集 Vol. 106 page： 588 - 588 2014
C364 東シベリア森林地帯における大気陸面研究 : タワーフラックス観測を中心に(大気-陸面間の水・エネルギー・炭素フラックスに関する最新研究2013,スペシャル・セッション)
小谷 亜由美, 太田 岳史
大会講演予講集 Vol. 104 page： 566 - 566 2013
C365 東シベリアカラマツ林における、枯死木出現に伴う上層群落と林内から生じる潜熱フラックスの変化(大気-陸面間の水・エネルギー・炭素フラックスに関する最新研究2013,スペシャル・セッション)
斉藤 淳志, 小谷 亜由美, 太田 岳史
大会講演予講集 Vol. 104 page： 567 - 567 2013
Seasonality of public interest in trees detected by internet search activity International conference
Ayumi Kotani
the All-Russian Conference with International Participation: THE ROLE OF BOTANICAL GARDENS IN THE CONSERVATION AND ENRICHMENT OF NATURAL AND CULTURAL FLORA 2021.7.13 North-Eastern Federal University
Decadal scale variation of permafrost active layer thickness at larch forests in eastern Siberia
A. Kotani, T. Nakai, T. Hiyama,T. Yamazaki, T. Ohta
The 11th Symposium on Polar Science 2020.12
Collaborative study of ecosystem carbon and water cycles in eastern Siberia
A. Kotani
NORTHERN SUSTAINABLE DEVELOPMENT FORUM 2020.9
Effect of precipitation on interannual variability of permafrost active layer thickness at larch forests in eastern Siberia
A. Kotani, T. Hiyama, T. Nakai, T. Yamazaki, T. Maximov
Japan Geoscience Union meeting 2020 2020.7
Altering seasonal transition of surface energy fluxes in larch forest on permafrost: warming spring and wetting autumn International conference
東シベリア森林における陸面乾湿変動下の大気境界層の特徴
小谷亜由美
日本気象学会秋季大会
Variability in seasonal transition indices and surface energy balance in larch forest of eastern Siberia International conference
Factors influencing the variation of CO2 flux and evapotranspiration in larch forest ecosystem affected by the extreme wet-soil condition International conference
Response of larch forest ecosystem to wetting permafrost active layer in eastern Siberia International conference
東シベリアのカラマツ林における永久凍土の季節融解層
小谷亜由美，太田岳史，檜山哲哉，マキシモフ
水文・水資源学会研究発表会
Variation of seasonal thaw depth at permafrost larch forest in eastern Siberia
東シベリアカラマツ林における永久凍土季節融解深
小谷亜由美，中坪稔，中井太郎，太田岳史
第129回日本森林学会大会
Active-layer thickness at permafrost larch forests in eastern Siberia International conference
Kotani, A., Nakatsubo, M., Ohta, T., Hiyama, T., Iijima, Y., Maximov
Fifth International Symposium on Arctic Research (ISAR-5)
Response of larch forest CO2 exchange on wetness variability of permafrost active layer in eastern Siberia International conference
Kotani, A., Ohta, T., Maximov, T.C.
The 2nd Asian Conference on Permafrost
Variation of larch tree transpiration and forest evapotranspiration at eastern Siberia - effect of hydro-thermal condition in active layer of permafrost
The Japanese Forest Society Congress
Turbulence in and above larch forest canopies in eastern Siberia
kamikura yoshito, Kotani Ayumi, Ohta Takeshi
The Japanese Forest Society Congress
Effects of vegetational change on root water uptake of larch forests in Eastern Siberia
Yamada Takuya, Ohta Takeshi, Kotani Ayumi
The Japanese Forest Society Congress
Galtbayar Saruul, Kotani Ayumi, Ohta Takeshi
The Japanese Forest Society Congress
Evapotranspiration and carbon dioxide fluxes over larch forests with different soil water condition at eastern Siberia International conference
4th International Symposium on Arctic Research (ISAR-4)
常緑落葉混交林におけるCO2吸収期間の年変動
小谷亜由美
日本農業気象学会研究発表会
Evapotranspiration at Larch forest in Eastern Asia : a wavelet analysis across multiple time scales
nakatsubo Minoru, Kotani Ayumi, Ohta Takeshi
Proceeding of Annual Conference
Yamada Atsushi, Ohta Takeshi, Kotani Ayumi
The Japanese Forest Society Congress
Evapotranspiration at Larch forests in Eastern Asia: a wavelet analysis across multiple time scales
Nakatsubo Minoru, Ohta Takeshi, Kotani Ayumi
The Japanese Forest Society Congress
Role of soil texture and canopy composition on evapotranspiration and CO2 exchange over larch forest International conference
小谷亜由美・太田岳史・AV Kononov・TC Maximov
8th annual international symposium on "C/H2O/energy balance and climate over boreal and arctic regions with special emphasis on eastern Siberia"
常緑落葉混交林における二酸化炭素交換量と吸収期間の年変動
小谷亜由美・太田岳史
日本気象学会秋季大会
東シベリアのカラマツ林でみられる凍土・森林・大気のかかわり
小谷亜由美
日本雪氷学会雪氷研究大会/気象水文・凍土合同分科会
D351 常緑落葉混交林における二酸化炭素交換量と吸収期間の年変動(大気-陸面間の水・エネルギー・炭素フラックスに関する最新研究2014,スペシャル・セッション)
小谷 亜由美, 太田 岳史
大会講演予講集
Saito Atsushi, Kotani Ayumi, Ohta Takeshi, Iijima Yoshihiro
The Japanese Forest Society Congress
Characteristics of long term evapotransration and responses in a evergreenand deciduous forest
innnami kento, Ohta Takeshi, Kotani Ayumi, Nakai Taro
The Japanese Forest Society Congress
Hanamura Miho, Ohta Takeshi, Kotani Ayumi, Hiyama Tetsuya, Jack Kambatuku, Iijima Morio
Proceeding of Annual Conference
Flux-based water use efficiency over two larch forests with different soil and canopy structure at eastern Siberia International conference
Kotani A, Ohta T, Maximov T
American Geophysical Union fall meeting
Net ecosystem water use efficiency over two larch forests at eastern Siberia International conference
Kotani A, Ohta T, Kononov A, Maximov T
2nd International Conference on "Global Warming and the Human-Nature Dimension in Siberia
東シベリア森林地帯における大気陸面研究－タワーフラックス観測を中心に International conference
小谷亜由美・太田岳史
日本気象学会秋季大会
Hydrological studies of a larch forest at northeastern Siberia International conference
Kotani, A.
Russian-Japanese Symposium on Global Climate Change
Forest Evapotranspiration and CO2 Flux over Larch Forests with Different Canopy Structure at Eastern International conference
Kotani, A., Hayashi, M., Ohta, T.,Maximov, T.
11th Asiaflux international workshop
Palmer Drought Severity Indexを指標とした日本における乾燥/湿潤期間の時空間変動
高橋瑠想・小谷亜由美
地球惑星連合大会
東シベリアカラマツ林における二酸化炭素吸収特性
林美晴・小谷亜由美
地球惑星連合大会
Effects of waterlogging stress on photosynthetic rate and leaf element content in Quercus serrata
Ito Tsubasa, Ohta Takeshi, Kotani Ayumi, Tomioka Rie
The Japanese Forest Society Congress
Ohta Takeshi, Kotani Ayumi, Ito Syougo, Hanamura Miho, Iijima Yoshihiro, Maximov Trofim, Kononov Alexander
The Japanese Forest Society Congress
Hanamura Miho, Ohta Takeshi, Kotani Ayumi, Suzuki Tetsuji, Hiyama Tetsuya, Jack Kambatuku, Iijima Morio
Proceeding of Annual Conference
Vegetation change of whole ecosystem and understory vegetation in eastern Siberian boreal forest
Saito Atsushi, Kotani Ayumi, Ohta Takeshi, Iijima Yoshihiro, Maximov Trofim, Kononov Alexander
The Japanese Forest Society Congress
Effects of Forest structure on the Evapotranspiration
Miyagi Yu, Matsumoto Kazuho, Ohta Takeshi, Nakai Taro, Daikoku Ken'ichi, Sumida Akihiro, Iida Shin'ichi, Kotani Ayumi, Takashima Atsushi, Trofim C. Maximov, Hara Toshihiko, Taniguchi Shingo
The Japanese Forest Society Congress
Net ecosystem exchange of CO2 and Evapotransipration over Siberian boreal forests
Kotani Ayumi, Hayashi Miharu, Ohta Takeshi, Maximov Trofim
The Japanese Forest Society Congress
東シベリア南部のカラマツ林における群落蒸発散 International conference
小谷 亜由美，太田岳史，Ｔマキシモフ
第123回日本森林学会
P1a6 陸域生物圏モデルBEAMSを用いたシベリア地域の水、エネルギー、炭素収支解析(ポスター・セッション)
相庭 一輝, 佐々井 崇博, 小谷 亜由美, 太田 岳史
大会講演予講集
Ecohydrological changes in relation to moistened active layer in eastern Siberia
Iijima Yoshihiro, Kotani Ayumi, Ohta Takeshi, Maximov Trofim
Proceedings of the General Meeting of the Association of Japanese Geographers
Seasonal variability of scalar turbulent transport above forest canopy
Kotani Ayumi, Hamazaki Shunki, Ohta Takeshi
Proceeding of Annual Conference
Tanaka Takayuki, Kotani Ayumi, Ohta Takeshi
The Japanese Forest Society Congress
The variable factor of carbon dioxide flux in an eastern Siberian larch forest.
Ito Shogo, Ohta Takeshi, Kotani Ayumi, Maximov Trofirm, Kononov Alexander
The Japanese Forest Society Congress
Khatun Rehana, Ohta Takeshi, Kotani Ayumi
Comparison of water and carbon flux over different forest in eastern Siberia
Kotani Ayumi, Ohta Takeshi, Maximov Trofim, Kononov Alexsader
The Japanese Forest Society Congress
HANAMURA Miho, OHTA Takeshi, KOTANI Ayumi, ITO Shogo, MAXIMOV Trofim C., KONONOV Alexander V., MAXIMOV Ayal P.
The Japanese Forest Society Congress
The causes of deviations from turbulent similarity in the atmospheric boundary layer above forests
HAMAZAKI Shunki, KOTANI Ayumi, OHTA Takeshi
The Japanese Forest Society Congress
Comparison of CO2 flux between two eastern Siberian boreal forests.
Hayashi Miharu, Ohta Takeshi, Kotani Ayumi, Maximov Trofim
The Japanese Forest Society Congress
Interannual variation of the carbon dioxide flux in an eastern Siberian larch forest
ito shogo, Ohta Takeshi, Kotani Ayumi, Trofirm Maximov, Alexander Kononov
The Japanese Forest Society Congress
Comparison of C/H2O/energy fluxes over boreal forest introduction of new measurement site at southern part of Lena basin International conference
5th International Workshop on 'C/H2O/Energy balance and climate over boreal and arctic regions with special emphasis on eastern Eurasia'
東シベリアのカラマツ林における水・熱・炭素交換の比較研究－レナ川南東部の新サイトでの観測開始と初期解析の結果－
太田岳史 トロフィーム・マキシモフ アレクサンダー・コノノフ
第121回日本森林学会大会
Yoshida Megumi, Ohta Takeshi, Kotani Ayumi
The Japanese Forest Society Congress
Water/Energy/Carbon exchange of two larch forests in eastern Siberia
Kotani Ayumi, Ohta Takeshi, Yoshida Ryuhei, Yoshida Megumi, Inoue Gen, Maximov Trofim
The Japanese Forest Society Congress
OHTA Takeshi, KOTANI Ayumi, IIJIMA Yoshihiro, NAKAI Taro, MAXIMOV Trofim
The Japanese Forest Society Congress
*Detecting a difference in phenological status using scalar dissimilarity observed above the forest canopy International conference
Asiaflux workshop 2009
Dameges in eastern Siberian Taiga due to too long and too heavy wet soil water condition
OHTA Takeshi, KOTANI Ayumi, NAKAI Taro, MAXIMOV Trofim
The Japanese Forest Society Congress
Yoshida Megumi, Ohta Takeshi, Kotani Ayumi, Tanaka Takafumi, Maximov Trofim
The Japanese Forest Society Congress
*Characteristics of surface energy balance at boreal forest -comparison of Yakutsk and northern Mongolian larch forest International conference
The 4th annual international workshop on "C/H2O/energy balance and climate over boreal regions with special emphasis on eastern Eurasia"
モンゴル北東部・疎密度草原における熱輸送パラメタリゼーション
小谷亜由美, 杉田倫明
水文・水資源学会2007年大会
粗密度草原における熱輸送パラメータの推定
小谷亜由美, 杉田倫明
日本気象学会2007年春季大会
Parameterization of Heat Transfer between the Land Surface and the Atmosphere in Mongolian Steppe
The 4th International Workshop on Terrestrial Change in Mongolia
航空機観測データを用いた混合層分散法による地表面フラックスの推定
小谷亜由美, 杉田倫明
日本気象学会2006年春季大会，分科会「種々の地表面上に発達する大気境界層の観測とモデリングに関する研究の現状と将来展望」
地表面フラックス推定のための混合層分散法の改良
小谷亜由美, 杉田倫明
水文・水資源学会2005年大会
Estimation of Surface Heat Fluxes around Kherlen River Basin by Airborne Turbulence Data International conference
The 1st International Symposium on Terrestrial and Climate Change in Mongolia
航空機観測データを用いた混合層分散法による地表面フラックスの推定
小谷亜由美, 杉田倫明
日本気象学会2005年春季大会
Aircraft Turbulence Measurements to Estimate Surface Heat Fluxes from the Mixed Layer Variance Methods over Semi-arid Grassland International conference
he 6th International Study Conference on GEWEX in Asia and GAME
Aircraft Measurements to Estimate Surface Heat Fluxes from the Mixed Layer Variance Methods over Semi-arid Grassland
The 3rd International Workshop on Terrestrial Change in Mongolia
航空機データを用いた広域地表面フラックスの推定
小谷亜由美, 杉田倫明
地球惑星関連学会2004年合同大会
半乾燥地域における大気・陸面間の熱・水交換過程の解明―航空機観測による地表面フラックスの推定
小谷亜由美
日本地理学会「水環境の地理学」研究グループ第18回研究集会
地目混在地域における広域熱・水蒸気フラックスと地表面被覆との関係
小谷亜由美，杉田倫明，宮田明，萩野谷成徳，飯田真一
地球惑星関連学会2003年合同大会
地目混在地域における広域熱フラックスと地表面被覆との関係
小谷亜由美，杉田倫明，宮田明，萩野谷成徳，飯田真一
日本気象学会2003年春季大会
Active-layer thickness at permafrost larch forests in eastern Siberia
Kotani, A, Nakatsubo, M, Ohta, T, Hiyama, T, Iijima, Y, Maximov
Fifth International Symposium on Arctic Research (ISAR-5) 2018.1.16
The causes of deviations from turbulent similarity in the atmospheric boundary layer above forests International conference
HAMAZAKI Shunki, KOTANI Ayumi, OHTA Takeshi
The Japanese Forest Society Congress 2011 THE JAPANESE FORESTRY SOCIETY
Effects of Forest structure on the Evapotranspiration International conference
Miyagi Yu, Matsumoto Kazuho, Ohta Takeshi, Nakai Taro, Daikoku Ken'ichi, Sumida Akihiro, Iida Shin'ichi, Kotani Ayumi, Takashima Atsushi, Trofim C. Maximov, Hara Toshihiko, Taniguchi Shingo
The Japanese Forest Society Congress 2013 THE JAPANESE FORESTRY SOCIETY
東シベリア森林地帯における大気陸面研究－タワーフラックス観測を中心に
小谷亜由美, 太田岳史
日本気象学会秋季大会 2013.11.19
東シベリア森林における陸面乾湿変動下の大気境界層の特徴 International conference
小谷亜由美
日本気象学会秋季大会 2019.10.30
東シベリア南部のカラマツ林における群落蒸発散
小谷 亜由美, 太田岳史, Tマキシモフ
第123回日本森林学会 2012.3.27
Comparison of CO2 flux between two eastern Siberian boreal forests. International conference
Hayashi Miharu, Ohta Takeshi, Kotani Ayumi, Maximov Trofim
The Japanese Forest Society Congress 2011 THE JAPANESE FORESTRY SOCIETY
Net ecosystem exchange of CO2 and Evapotransipration over Siberian boreal forests International conference
Kotani Ayumi, Hayashi Miharu, Ohta Takeshi, Maximov Trofim
The Japanese Forest Society Congress 2013 THE JAPANESE FORESTRY SOCIETY
Vegetation change of whole ecosystem and understory vegetation in eastern Siberian boreal forest International conference
Saito Atsushi, Kotani Ayumi, Ohta Takeshi, Iijima Yoshihiro, Maximov Trofim, Kononov Alexander
The Japanese Forest Society Congress 2013 THE JAPANESE FORESTRY SOCIETY
Variability of evapotranspiration in an eastern Siberian larch forest over a 12 year period from 1998 to 2011:Effects of high soil water conditions on evapotranspiration International conference
HANAMURA Miho, OHTA Takeshi, KOTANI Ayumi, ITO Shogo, MAXIMOV Trofim C, KONONOV Alexander V, MAXIMOV Ayal P
The Japanese Forest Society Congress 2011 THE JAPANESE FORESTRY SOCIETY
Interannual variation of the carbon dioxide flux in an eastern Siberian larch forest International conference
ito shogo, Ohta Takeshi, Kotani Ayumi, Trofirm Maximov, Alexander Kononov
The Japanese Forest Society Congress 2011 THE JAPANESE FORESTRY SOCIETY
Turbulence in and above larch forest canopies in eastern Siberia International conference
kamikura yoshito, Kotani Ayumi, Ohta Takeshi
The Japanese Forest Society Congress 2017 THE JAPANESE FORESTRY SOCIETY
東シベリアカラマツ林における永久凍土季節融解深 International conference
小谷亜由美, 中坪稔, 中井太郎, 太田岳史
第129回日本森林学会大会 2018.3.27
Water/Energy/Carbon exchange of two larch forests in eastern Siberia International conference
Kotani Ayumi, Ohta Takeshi, Yoshida Ryuhei, Yoshida Megumi, Inoue Gen, Maximov Trofim
The Japanese Forest Society Congress 2010 THE JAPANESE FORESTRY SOCIETY
Effects of vegetational change on root water uptake of larch forests in Eastern Siberia International conference
Yamada Takuya, Ohta Takeshi, Kotani Ayumi
The Japanese Forest Society Congress 2017 THE JAPANESE FORESTRY SOCIETY
東シベリアカラマツ林における二酸化炭素吸収特性 International conference
林美晴, 小谷亜由美
地球惑星連合大会 2013.5.21
Primary factors in interannual variation of latent heat fluxes from overstory and understory in Siberian larch forest International conference
Saito Atsushi, Kotani Ayumi, Ohta Takeshi, Iijima Yoshihiro
The Japanese Forest Society Congress 2014 THE JAPANESE FORESTRY SOCIETY
Variation of larch tree transpiration and forest evapotranspiration at eastern Siberia - effect of hydro-thermal condition in active layer of permafrost International conference
2017.5.20
Environmental factors affecting fluctuations of forest evapotranspiration on a multi-temporal scale in an eastern Siberian larch forest International conference
Yoshida Megumi, Ohta Takeshi, Kotani Ayumi, Tanaka Takafumi, Maximov Trofim
The Japanese Forest Society Congress 2009 THE JAPANESE FORESTRY SOCIETY
The variable factor of carbon dioxide flux in an eastern Siberian larch forest. International conference
Ito Shogo, Ohta Takeshi, Kotani Ayumi, Maximov Trofirm, Kononov Alexander
The Japanese Forest Society Congress 2011 THE JAPANESE FORESTRY SOCIETY
東シベリアのカラマツ林における永久凍土の季節融解層 International conference
小谷亜由美, 太田岳史, 檜山哲哉, マキシモフ
水文・水資源学会研究発表会 2018.9.13
東シベリアのカラマツ林でみられる凍土・森林・大気のかかわり International conference
小谷亜由美
日本雪氷学会雪氷研究大会/気象水文・凍土合同分科会 2014.9.20
Ecohydrological changes in relation to moistened active layer in eastern Siberia International conference
Iijima Yoshihiro, Kotani Ayumi, Ohta Takeshi, Maximov Trofim
Proceedings of the General Meeting of the Association of Japanese Geographers 2012 The Association of Japanese Geographers
Characteristics of long term evapotransration and responses in a evergreenand deciduous forest International conference
innnami kento, Ohta Takeshi, Kotani Ayumi, Nakai Taro
The Japanese Forest Society Congress 2014 THE JAPANESE FORESTRY SOCIETY
常緑落葉混交林における二酸化炭素交換量と吸収期間の年変動 International conference
小谷亜由美, 太田岳史
日本気象学会秋季大会 2014.10.23
常緑落葉混交林におけるCO2吸収期間の年変動 International conference
小谷亜由美
日本農業気象学会研究発表会 2015.3.17
Effect of variation of environmental factors on forest evapotranspiration : Comparison in eastern Siberian larch forests International conference
The Japanese Forest Society Congress 2017 THE JAPANESE FORESTRY SOCIETY
Effects of interception loss on changing PAI and rainfall intensity by using artificial rainfall system International conference
Yamada Atsushi, Ohta Takeshi, Kotani Ayumi
The Japanese Forest Society Congress 2015 THE JAPANESE FORESTRY SOCIETY
The interannual variation of evapotranspiration and photosynthesis of the larch forest in Spasskaya Pad, Russia International conference
Ohta Takeshi, Kotani Ayumi, Ito Syougo, Hanamura Miho, Iijima Yoshihiro, Maximov Trofim, Kononov Alexander
The Japanese Forest Society Congress 2013 THE JAPANESE FORESTRY SOCIETY
Interannual variability of surface heat balance and atmospheric boundary layer in Siberian and Mongolian boreal forest International conference
Galtbayar Saruul, Kotani Ayumi, Ohta Takeshi
The Japanese Forest Society Congress 2016 THE JAPANESE FORESTRY SOCIETY
Analysis of characteristics of evapotranspiration in northern Namibia for introducing the mixed cropping of rice and pearl millet International conference
Hanamura Miho, Ohta Takeshi, Kotani Ayumi, Suzuki Tetsuji, Hiyama Tetsuya, Jack Kambatuku, Iijima Morio
Proceeding of Annual Conference 2013 THE JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES
Analysis of characteristics of evapotranspiration in northern Namibia for introducing the mixed cropping of rice and pearl millet International conference
Hanamura Miho, Ohta Takeshi, Kotani Ayumi, Hiyama Tetsuya, Jack Kambatuku, Iijima Morio
Proceeding of Annual Conference 2014 THE JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES
Evapotranspiration at Larch forests in Eastern Asia: a wavelet analysis across multiple time scales International conference
Nakatsubo Minoru, Ohta Takeshi, Kotani Ayumi
The Japanese Forest Society Congress 2015 THE JAPANESE FORESTRY SOCIETY
Evapotranspiration at Larch forest in Eastern Asia : a wavelet analysis across multiple time scales International conference
nakatsubo Minoru, Kotani Ayumi, Ohta Takeshi
Proceeding of Annual Conference 2015 THE JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES
Variation of seasonal thaw depth at permafrost larch forest in eastern Siberia International conference
2018.5.24
Variability in seasonal transition indices and surface energy balance in larch forest of eastern Siberia
2019.10.5
Role of soil texture and canopy composition on evapotranspiration and CO2 exchange over larch forest
小谷亜由美, 太田岳史, AV Kononov, TC Maximov
8th annual international symposium on "C/H2O/energy balance and climate over boreal and arctic regions with special emphasis on eastern Siberia" 2014.11.10
Khatun Rehana, Ohta Takeshi, Kotani Ayumi
2011
Response of larch forest ecosystem to wetting permafrost active layer in eastern Siberia
2018.9.18
Response of larch forest CO2 exchange on wetness variability of permafrost active layer in eastern Siberia
Kotani, A, Ohta, T, Maximov, T
The 2nd Asian Conference on Permafrost 2017.7.3
Palmer Drought Severity Indexを指標とした日本における乾燥/湿潤期間の時空間変動 International conference
高橋瑠想, 小谷亜由美
地球惑星連合大会 2013.5.21
P1a6 陸域生物圏モデルBEAMSを用いたシベリア地域の水、エネルギー、炭素収支解析(ポスター・セッション) International conference
相庭 一輝, 佐々井 崇博, 小谷 亜由美, 太田 岳史
大会講演予講集 2012 日本気象学会
Net ecosystem water use efficiency over two larch forests at eastern Siberia
Kotani A, Ohta T, Kononov A, Maximov T
2nd International Conference on "Global Warming and the Human-Nature Dimension in Siberia 2013.11.21
Hydrological studies of a larch forest at northeastern Siberia
Kotani, A
Russian-Japanese Symposium on Global Climate Change 2013.9.5
Forest Evapotranspiration and CO2 Flux over Larch Forests with Different Canopy Structure at Eastern
Kotani, A, Hayashi, M, Ohta, T, Maximov, T
11th Asiaflux international workshop 2013.8.21
Flux-based water use efficiency over two larch forests with different soil and canopy structure at eastern Siberia
Kotani A, Ohta T, Maximov T
American Geophysical Union fall meeting 2013.12.9
Factors influencing the variation of CO2 flux and evapotranspiration in larch forest ecosystem affected by the extreme wet-soil condition
2019.10.4
Evapotranspiration and carbon dioxide fluxes over larch forests with different soil water condition at eastern Siberia
4th International Symposium on Arctic Research (ISAR-4) 2015.4.27
D351 常緑落葉混交林における二酸化炭素交換量と吸収期間の年変動(大気-陸面間の水・エネルギー・炭素フラックスに関する最新研究2014,スペシャル・セッション) International conference
小谷 亜由美, 太田 岳史
大会講演予講集 2014 日本気象学会
Altering seasonal transition of surface energy fluxes in larch forest on permafrost: warming spring and wetting autumn
2019.12.10
Seasonal variability of scalar turbulent transport above forest canopy International conference
Kotani Ayumi, Hamazaki Shunki, Ohta Takeshi
Proceeding of Annual Conference 2012 THE JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES
Dameges in eastern Siberian Taiga due to too long and too heavy wet soil water condition International conference
OHTA Takeshi, KOTANI Ayumi, NAKAI Taro, MAXIMOV Trofim
The Japanese Forest Society Congress 2009 THE JAPANESE FORESTRY SOCIETY
Impacts of extreme wet soil water content on surface conductance:Results obtained from the observation in a larch forest, eastern Siberia International conference
OHTA Takeshi, KOTANI Ayumi, IIJIMA Yoshihiro, NAKAI Taro, MAXIMOV Trofim
The Japanese Forest Society Congress 2010 THE JAPANESE FORESTRY SOCIETY
Comparison of water and carbon flux over different forest in eastern Siberia International conference
Kotani Ayumi, Ohta Takeshi, Maximov Trofim, Kononov Alexsader
The Japanese Forest Society Congress 2011 THE JAPANESE FORESTRY SOCIETY
Regional differences on multi-temporal variation of environmental factors controlling forest evapotranspiration International conference
Yoshida Megumi, Ohta Takeshi, Kotani Ayumi
The Japanese Forest Society Congress 2010 THE JAPANESE FORESTRY SOCIETY
Effects of waterlogging stress on photosynthetic rate and leaf element content in Quercus serrata International conference
Ito Tsubasa, Ohta Takeshi, Kotani Ayumi, Tomioka Rie
The Japanese Forest Society Congress 2013 THE JAPANESE FORESTRY SOCIETY
Interannual and seasonal change of surface energy balance in temperate mixed forest.:Relationship between energy balance closure and energy fluxes. International conference
Tanaka Takayuki, Kotani Ayumi, Ohta Takeshi
The Japanese Forest Society Congress 2011 THE JAPANESE FORESTRY SOCIETY
地表被覆の断熱機能からみた永久凍土都市の凍土安定性ー凍土を守る土地利用の探求
Grant number：20K06145 2020.4 - 2023.3
科学研究費助成事業 基盤研究(C)
小谷 亜由美
Authorship：Principal investigator
Grant amount：\4160000 （ Direct Cost: \3200000 、 Indirect Cost：\960000 ）
気候変動の影響を直接的・間接的に受け、降水量や気温の極端現象の激化や頻発化に直面している寒冷圏陸域生態系では、今後も永久凍土荒廃・後退が進行すること懸念されている。従来から注目されている火災や森林伐採などの攪乱に加えて、都市活動にともなう土地利用変化の影響もその要因の一つである。土地利用変化が凍土環境およびその安定性に及ぼす影響を最小限に抑える対策につながる知見を得ることを目的として、本研究では永久凍土地帯東シベリア森林域にある都市周縁域における、利用形態や攪乱程度の異なる植生地の凍土保護機能を地表被覆の断熱効果に着目して評価する。
本課題は、気候変動の影響に加えて人間活動による永久凍土の荒廃・後退が懸念されている東シベリア森林地域の都市周縁域における、都市的土地利用および攪乱程度の異なる植生地の凍土保護機能を地表被覆の断熱効果の評価を通して、凍土への影響を最小限に抑えて必要な都市活動を維持する凍土保全策の探求を目的とする。2020年度は、以下の２点を中心とした成果が得られた。
１）対象地域の凍土植生情報とそれに影響を及ぼす土地利用について、文献とロシアの共同研究者からの情報収集に基づき調査した。凍土活動層の熱収支に影響を及ぼす植生被覆の季節動態およびその年変動について、（英語化されていない）ロシアの研究成果をもとに、対象地域の森林を中心にの立地や遷移段階の異なる植生地における、活動層の凍結融解過程の情報を整理した。また、森林での人間活動のうち植物採取に注目し、対象地域での採取活動に関する社会状況等を、文献や行政資料、現地研究者からの情報収集により調査した。
２）人為影響の小さい森林として比較対象とするサイトにおいて、これまでに得られている地温データの解析より、地表植生の変化のある過去20年では、植生変化による地表断熱効果に加えて土壌水分の変動が活動層の融解凍結過程の年変動と関係することがわかった。温度計測に基づく地表断熱効果の評価は、被覆厚と測定深度の関係に不確実性が残り検討が必要であるが、年変動をとらえるには適していると考えられる。来年度以降に実施可能であれば、人間活動の影響のある植生地においても、活動層地温の観測を行い比較する。このための計測機器の準備をおこなった。
ロシアでの現地調査と観測機材の輸送ができないことにより、申請時の年次計画に記した項目は実施できていない。研究期間内にも状況の変化が期待できないため、現地調査を中心とする実施内容を変更する必要があると判断した。
今年度も現地調査を実施する見通しが立たないため、引き続き，文献と現地共同研究者からの情報収集により対象地域の凍土・植生情報と凍土保全対策等の状況を調査する。来年度の渡航可能性を考慮しながら、現地共同研究者と実現可能な調査計画を検討し準備する。
Pan-Arctic Water-Carbon Cycles
Grant number：19H05668 2019.6 - 2024.3
Authorship：Coinvestigator(s)
Boundary layer climatology over larch forest in eastern Siberia, focus on interaction between plant phenology and atmosphere
Grant number：15K00521 2015.4 - 2019.3
Kotani Ayumi
Authorship：Principal investigator
Grant amount：\4810000 （ Direct Cost: \3700000 、 Indirect Cost：\1110000 ）
The interaction between forest ecosystem and atmosphere in eastern Siberian was investigated, using the ground observation and the atmospheric profile data for the last two decades. The seasonal and interannual variations of the surface heat balance and parameters of the atmospheric boundary layer were presented. Based on these results, interannual variation of the seasonal transition factors, including snow melt, plant phenology and seasonal thawing process in the permafrost active layer, and effects of the unusually wet condition in the active layer in the 2000s were discussed.
Influences of forest evapotranspration and photosynthesis under the humidification in the Lena river basin, eastern Siberia
Grant number：26252021 2014.4 - 2018.3
Ohta Takeshi
Authorship：Coinvestigator(s)
In the Lena river basin of eastern Siberia, the characteristics of forest evapotransriration and photosythesis are changed by forest environmants in waterlogging durings 2005-2008, and the influences of damages for waterlogging are studied in forest physiology (A), forest ecology (B), permafrostlogy (C), and river hydrology (D).
The influences of the responses for the A, B, and C processes were appeared by the charactrestics of forests, and the evapotranspiration and photosynthesis are decreased by permafrost conditions in the waterlogging. The influences for the D response was not issued at all and was not changed by forest conditions in the waterlogging period. This phenomena is considered in the place of occurrence for the river discharge.
The influences of the responses for the smaller or the bigger groupes are appeared by evapotranspiration, photosynthesis, and permafrost characteristics.
Permafrost mapping under changing environment in eastern Eurasia
Grant number：26242026 2014.4 - 2018.3
Iijima Yoshihiro
Authorship：Coinvestigator(s)
This research project clarified spatial and temporal variations in degradation processes in permafrost region in eastern Eurasia, based on comprehensive analyses utilizing field work for vegetation-permafrost relationship, leveling on active layer and topographical change along permafrost degradation combining remote sensing technics, permafrost hydrological analyses and improved land-surface modeling. Notable results are summarized as follows. Spatial variation in active layer thickness was closely related with vegetation changes. Spatial structure of thermokarst development precisely mapped along with vegetation and active layer conditions. The permafrost degradation was also found in water-resource form geochemical composition in spring water. Based on these findings from field work, effect of snow depth, soil organic and moss layer in land surface model were sufficiently improved the performance to simulate permafrost temperature and active layer thickness in this region.
Effect of vegetation on urban atmosphere environment
Grant number：24780148 2012.4 - 2016.3
Kotani Ayumi
Authorship：Principal investigator
Grant amount：\4810000 （ Direct Cost: \3700000 、 Indirect Cost：\1110000 ）
Field observation data of heat flux to atmosphere from vegetation and satellite data of land surface is used in order to evaluate effect of vegetation on urban atmospheric heat environment. Temperature difference between urban surface (without vegetation) and various urban vegetation such as park, agriculture field, and suburban forest is investigated with focus on multi-scale temporal variation (daily, seasonal, and inter-annual). Although vegetation field is generally cooler than urban surface, some exception is observed as follows; surface temperature is warmer in agriculture field during wintertime and occasionally heat flux from forest surface is compatible to those of urban surface even in summertime. If we miss to consider vegetation types and composites of urban vegetation field, we should overestimate cooling effect of vegetation.
The universality and the diversity on Water/Energy/Carbon exchanges of forests in East Asia
Grant number：20248016 2008 - 2011
OHTA Takeshi
Authorship：Coinvestigator(s)
The water, energy and carbon(W/E/C) exchanges from tropical to boreal forests through temperate forests in the Eastern Asia are examined from the tree levels to the forest levels with the observations and modelings. The forests environments, especially in winter, are severer in the high latitudes than in the low latitudes. And the responses of individual trees in the tropic, the temperate and the boreal zones are different each others, but those of stands scales are equal to several potential lines between the environment conditions and the conductance of the forests. The several models can be possible to represent the W/E/C cycles basically, but the soil water supply in the deeper parts of the soil layers is needed to add in the tropical forests.
Basic Practical Courses
2021
Agricultural Sciences
2021
Environmental Sciences in Biosphere 1
2021
Forest Environment Science
2021
生物環境科学実験実習
2021
環境問題と人間
2021
国際森林資源論
2021
国際森林資源論（分担）
2020
環境問題と人間（分担）
2020
2019 RJE3 Field Science Short Course in Yakutsk, Russia
2019.8
Country：Russian Federation
2018 RJE3 Field Science Short Course in Yakutsk, Russia
2018.8
Country：Russian Federation
日露海外青年交流事業短期派遣プログラム「若手研究者から見る日露合同極地開発への展望」
Role(s)：Organizing member
日露青年交流センター 2016.10
