Faculty Profiles - NAKATSUKA, Takeshi

Papers - NAKATSUKA, Takeshi

Division display 1 - 20 of about 198 ／ All the affair displays >>

A 2600-year summer climate reconstruction in central Japan by integrating tree-ring stable oxygen and hydrogen in isotopes Reviewed International coauthorship International journal

Nakatsuka Takeshi, Sano Masaki, Li Zhen, Xu Chenxi, Tsushima Akane, Shigeoka Yuki, Sho Kenjiro, Ohnishi Keiko, Sakamoto Minoru, Ozaki Hiromasa, Higami Noboru, Nakao Nanae, Yokoyama Misao, Mitsutani Takumi

CLIMATE OF THE PAST Vol. 16 ( 6 ) page： 2153 - 2172 2020.11

Language：English Publishing type：Research paper (scientific journal) Publisher：Climate of the Past

Oxygen isotope ratios (δ18O) of tree-ring cellulose are a novel proxy for summer hydroclimate in monsoonal Asia. In central Japan, we collected 67 conifer wood samples, mainly Chamaecyparis obtusa, with ages encompassing the past 2600 years. The samples were taken from living trees, archeological wood, architectural wood, and buried logs. We analyzed stable isotope ratios of oxygen (δ18O) and hydrogen (d2H) in tree-ring cellulose in these samples (more than 15 000 rings in total) without using a pooling method and constructed a statistically reliable treering cellulose δ18O time series for the past 2500 years. However, there were distinct age trends and level offsets in the δ18O record, and cellulose δ18O values showed a gradual decrease as an individual tree matures. This suggested it is difficult to establish a cellulose δ18O chronology for lowfrequency signals by simple averaging of all the δ18O time series data. In addition, there were opposite age trends in the cellulose δ2H, and δ2H gradually increased with tree age. There were clear positive correlations in the short-periodicity variations between δ18O and δ2H, probably indicating a common climate signal. A comparison of the δ18O and δ2H time series in individual trees with tree-ring width suggested that the opposite age trends of δ18O and δ2H are caused by temporal changes in the degree of post-photosynthetic isotope exchange with xylem water (physiological effect), accompanied by changes in stem growth rate that are influenced by human activity in the forests of central Japan. Based on the assumptions that cellulose δ18O and δ2H vary positively and negatively with constant proportional coefficients due to climatological and physiological effects, respectively, we solved simultaneous equations for the climatological and physiological components of variations in tree-ring cellulose δ18O and δ2H in order to remove the age trend. This enabled us to evaluate the climatic record from cellulose δ18O vari ations. The extracted climatological component in the cellulose δ18O for the past 2600 years in central Japan was well correlated with numerous instrumental, historical, and paleoclimatological records of past summer climate at various spatial and temporal scales. This indicates that integration of tree-ring cellulose δ18O and δ2H data is a promising method to reconstruct past summer climate variations on annual to millennial timescales, irrespective of the growth environment. However, analytical and statistical methods need to be improved for further development of this climate proxy.

DOI： 10.5194/cp-16-2153-2020

Web of Science

Scopus

Tree-rings stable isotope (d(18)O and d(2)H) based 368 years long term precipitation reconstruction of South Eastern Kashmir Himalaya Reviewed International coauthorship

Pandey Uttam, Nakatsuka Takeshi, Mehrotra Nivedita, Zhen Li, Kato Yoshikazu, Sano Masaki, Shah Santosh K.

SCIENCE OF THE TOTAL ENVIRONMENT Vol. 892 page： 164640 2023.9

TWO NEW MILLENNIUM-LONG TREE-RING OXYGEN ISOTOPE CHRONOLOGIES (2349-1009 BCE AND 1412-466 BCE) FROM JAPAN Reviewed

Sano Masaki, Kimura Katsuhiko, Miyake Fusa, Tokanai Fuyuki, Nakatsuka Takeshi

RADIOCARBON Vol. 65 ( 3 ) page： 721 - 732 2023.6

Tree ring oxygen isotope dating of wood recovered from a canal in the ancient capital of Japan Reviewed

Sano Masaki, Li Zhen, Murakami Yumiko, Jinno Megumi, Ura Yoko, Kaneda Akihiro, Nakatsuka Takeshi

JOURNAL OF ARCHAEOLOGICAL SCIENCE-REPORTS Vol. 45 2022.10

Climate variation in ancient Japan inferred from tree-ring cellulose oxygen isotopic ratio Invited Reviewed

Takeshi NAKATSUKA

Bulletin of the National Museum of Japanese History Vol. 232 page： 11 - 30 2022.3

Simulation of variations in climate, agricultural production, and population during Yayoi and Kofun Eras using tree-ring oxygen isotopic ratios Invited Reviewed

Takeshi NAKATSUKA

Bulletin of the National Museum of Japanese History Vol. 231 page： 317 - 336 2022.2

Tree-ring oxygen isotope across monsoon Asia: Common signal and local influence Reviewed

Xu Chenxi, Zhao Qingyu, An Wenling, Wang Simon, Tan Ning, Sano Masaki, Nakatsuka Takeshi, Borhara Krishna, Guo Zhengtang

QUATERNARY SCIENCE REVIEWS Vol. 269 2021.10

Language：English Publisher：Quaternary Science Reviews

Tree-ring cellulose oxygen isotope (δ18O) in monsoon Asia (MA) is affected collectively by local hydroclimate and remote oceanic-atmospheric variations. Variations of tree-ring δ18O have been widely used for quantitative reconstructions of monsoon-season precipitation, relative humidity and drought severity. However, local hydroclimate and remote large-scale circulation's influences on tree-ring δ18O has not been fully resolved. Here, we collected 24 tree-ring δ18O chronologies covering the period of 1884–1999 across a wide range of MA and investigated the common signals of these chronologies using principal component analysis. The first principal component (PC1) of the 24 tree-ring δ18O chronologies explained 25.2% of the total variances and showed significant positive correlations with the observed Asian summer monsoon oxygen isotope index (r = 0.69) during the period of 1978–1999, suggesting that a common signal of precipitation δ18O does exist in MA and that it is highly correlated with El Niño–Southern Oscillation (ENSO) (r = 0.72) and the South Asian summer monsoon precipitation (r = −0.66). South Asian summer monsoon precipitation and ENSO are the main factors controlling this common signal of tree-ring δ18O across MA. PC1 of tree-ring δ18O chronologies in MA also depicted a negative (positive) correlation with the Atlantic Multidecadal Oscillation (Pacific Decadal Oscillation), indicating the large-scale circulation influences. After removing the large-scale circulation influences on tree-ring δ18O chronologies, however, the residual tree-ring δ18O chronologies exhibit negative correlations with the regional hydroclimate, highlighting the role local hydroclimate on the individual tree-ring δ18O variations.

DOI： 10.1016/j.quascirev.2021.107156

Web of Science

Scopus

古気候学者から歴史学者への協働の呼びかけ―現代の諸問題に対峙するために－ Invited

中塚武

日本史研究 Vol. 700 page： 147 - 162 2020.12

酸素同位体比年輪年代法－高精度編年への挑戦 Invited

中塚武

季刊考古学 Vol. 150 page： 142-145 2020.2

年輪を用いた南アルプスにおける1774 年以降の夏期気温の復元 Reviewed

安江恒, 久保典子, 赤尾実紀子, 佐野雅規, 中塚武

地学雑誌 Vol. 128 ( 1 ) page： 49-59 2019.2

Seasonal changes of δD and δ18O in tree-ring cellulose of Quercus crispula suggest a change in post-photosynthetic processes during earlywood growth. Reviewed International coauthorship International journal

Nabeshima E, Nakatsuka T, Kagawa A, Hiura T, Funada R

Tree physiology Vol. 38 ( 12 ) page： 1829 - 1840 2018.12

A 180-year-long isotopic record of tree-ring cellulose on Okinawa Island, Japan. Reviewed International journal

Ryu Uemura, Miki Uemura, Masaki Sano, Takeshi Nakatsuka

Vol. 52 page： e21-e27 2018.11

酸素同位体比年輪年代法による池島・福万寺遺跡の弥生時代水田に関する年代観の構築

井上智博, 中塚武, 李貞, 對馬あかね, 佐野雅規, 遠部慎, 中原計

大阪文化財研究 Vol. 51 page： 1-26 2018.3

酸素同位体比年輪年代法の誕生と展開 Invited Reviewed

中塚　武

考古学と自然科学 Vol. 76 page： 1-13 2018.3

『CD-ROM版鎌倉遺文』に収録された古文書件数と気候復元データの関係の定量的分析 Invited Reviewed

伊藤啓介, 中塚武

鎌倉遺文研究 Vol. 40 page： 23-53 2017.10

Recent enhancement of central Pacific El Niño variability relative to last eight centuries. Reviewed International coauthorship International journal

Liu Y, Cobb KM, Song H, Li Q, Li CY, Nakatsuka T, An Z, Zhou W, Cai Q, Li J, Leavitt SW, Sun C, Mei R, Shen CC, Chan MH, Sun J, Yan L, Lei Y, Ma Y, Li X, Chen D, Linderholm HW

Nature communications Vol. 8 page： 15386 2017.5

Tree-ring oxygen isotope cross-dating between southeastern China and central Japan Reviewed International coauthorship

Shi S., Shi J., Nakatsuka T., Sano M., Li Z., Shu J., Wang X., Huang J., Li J., Lu H.

Dendrochronologia Vol. 91 2025.6

Reconstruction of drought and long-rain chronologies since the 17th century in central Japan using intra-annual tree-ring oxygen isotope ratios and documentary records Reviewed

Iizuka, H; Sho, K; Li, Z; Sano, M; Kato, Y; Nakatsuka, T

CLIMATE OF THE PAST Vol. 21 ( 1 ) page： 133 - 144 2025.1

Method to measure tree-ring width, density, elemental composition, and stable carbon and oxygen isotopes using one sample Reviewed International coauthorship

Xu, CX; Zhao, YR; An, WL; Zhao, QY; Liu, YC; Sano, M; Nakatsuka, T

JOURNAL OF FORESTRY RESEARCH Vol. 35 ( 1 ) 2024.12

Methodological constrains of tree-ring stable isotope chronologies Reviewed

Tito Arosio, Max Torbenson, Tatiana Bebchuk, Alexander Kirdyanov, Jan Esper, Takeshi Nakatsuka, Masaki Sano, Otmar Urban, Kurt Nicolussi, Markus Leuenberger, Ulf Büntgen

Quaternary Science Reviews Vol. 340 page： 108861 2024.9

　 PREV - NEXT 　

<NAKATSUKA, Takeshi>

Papers - NAKATSUKA, Takeshi