研究者詳細 - 中塚　武

論文 - 中塚　武

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A 2600-year summer climate reconstruction in central Japan by integrating tree-ring stable oxygen and hydrogen in isotopes 査読有り国際共著国際誌

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 16 巻 ( 6 ) 頁： 2153 - 2172 2020年11月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：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 査読有り国際共著

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

SCIENCE OF THE TOTAL ENVIRONMENT 892 巻頁： 164640 2023年9月

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

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

RADIOCARBON 65 巻 ( 3 ) 頁： 721 - 732 2023年6月

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

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

JOURNAL OF ARCHAEOLOGICAL SCIENCE-REPORTS 45 巻 2022年10月

樹木年輪セルロースの酸素同位体比からみた古代日本の気候変動招待有り査読有り

中塚武

国立歴史民俗博物館研究報告 232 巻頁： 11 - 30 2022年3月

年輪酸素同位体比を用いた弥生・古墳時代の気候・農業生産・人口の変動シミュレーション招待有り査読有り

中塚武

国立歴史民俗博物館研究報告 231 巻頁： 317 - 336 2022年2月

Tree-ring oxygen isotope across monsoon Asia: Common signal and local influence 査読有り

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

QUATERNARY SCIENCE REVIEWS 269 巻 2021年10月

記述言語：英語出版者・発行元：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－招待有り

中塚武

日本史研究 700 巻頁： 147 - 162 2020年12月

酸素同位体比年輪年代法－高精度編年への挑戦招待有り

中塚武

季刊考古学 150 巻頁： 142-145 2020年2月

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査読有り

安江恒, 久保典子, 赤尾実紀子, 佐野雅規, 中塚武

地学雑誌 128 巻 ( 1 ) 頁： 49-59 2019年2月

Seasonal changes of δD and δ18O in tree-ring cellulose of Quercus crispula suggest a change in post-photosynthetic processes during earlywood growth. 査読有り国際共著国際誌

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

Tree physiology 38 巻 ( 12 ) 頁： 1829 - 1840 2018年12月

A 180-year-long isotopic record of tree-ring cellulose on Okinawa Island, Japan. 査読有り国際誌

Ryu Uemura, Miki Uemura, Masaki Sano, Takeshi Nakatsuka

Geochemical Journal 52 巻頁： e21-e27 2018年11月

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 51 巻頁： 1-26 2018年3月

酸素同位体比年輪年代法の誕生と展開招待有り査読有り

中塚　武

考古学と自然科学 76 巻頁： 1-13 2018年3月

『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招待有り査読有り

伊藤啓介, 中塚武

鎌倉遺文研究 40 巻頁： 23-53 2017年10月

Recent enhancement of central Pacific El Niño variability relative to last eight centuries. 査読有り国際共著国際誌

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 8 巻頁： 15386 2017年5月

Tree-ring oxygen isotope cross-dating between southeastern China and central Japan 査読有り国際共著

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

Dendrochronologia 91 巻 2025年6月

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 査読有り

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

CLIMATE OF THE PAST 21 巻 ( 1 ) 頁： 133 - 144 2025年1月

Method to measure tree-ring width, density, elemental composition, and stable carbon and oxygen isotopes using one sample 査読有り国際共著

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

JOURNAL OF FORESTRY RESEARCH 35 巻 ( 1 ) 2024年12月

Methodological constrains of tree-ring stable isotope chronologies 査読有り

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 340 巻頁： 108861 2024年9月

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