樹木年輪を用いた環北極域森林生態系樹木の気候変動応答解析
Growth and physiological responses of trees to climate changes deduced from tree-ring variables (widths, density,δ13C and δ18O) over the pan-Arctic region.
Circumboreal forest ecosystems are exposed to a larger magnitude of warming in comparison with the global average, as a result of warming-induced environmental changes. However, it is not clear how these ecosystems responds to these changes. So, I am investigating the sensitivity of forest productivity to climate change using tree-ring parameters, satellite-derived vegetation indices, vegetation models and so on.
1. Tei, S., Sugimoto, A., Yonenobu, H., Hoshino, Y., Maximov, T. C. Reconstruction of summer Palmer Drought Severity Index from δ13C of larch tree rings in East Siberia. Quaternary International 290-291, 275-281, March 2013, doi.org/10.1016/j.quaint.2012.06.040.
2. Tei, S., Sugimoto, A., Yonenobu, H., Yamazaki, T., Maximov, T. C. Reconstruction of soil moisture for the past 100 years in eastern Siberia by using δ13C of larch tree rings. Journal of Geophysical Research-Biogeosciences 118, 1256-1265, September 2013, doi:10.1002/jgrg.20110
3. Tei, S., Sugimoto, A., Yonenobu, H., Ohta, T., Maximov, T. C. Growth and physiological responses of larch trees to climate changes deduced from tree-ring widths and δ13C at two forest sites in eastern Siberia. Polar Science 8, 183-195, June 2014, doi.org/10.1016/j.polar.2013.12.002
4. Iwahana, G., Takano, S., Petrov, R. E., Tei. S., Shingubara. R., Maximov, T. C., Fedorov, A. N., Desyatkin, A. R., Nikolaev, A. N., Desyatkin, R. V., Sugimoto, A. Geocryological characteristics of the upper permafrost in a tundra-forest transition of the Indigirka River Valley, Russia. Polar Science 8, 96-113, June 2014, doi.org/10.1016/j.polar.2014.01.005.
5. Liang, M., Sugimoto, A., Tei, S., Bragin, I. V., Takano, S., Morozumi, T., Shingubara, R., Maximov, T. C., Kiyashko, S. I., Velivetskaya, T. A., Ignatiev, A. V. Importance of soil moisture and N availability to larch growth and distribution in the Arctic taiga-tundra boundary ecosystem, northeastern Siberia. Polar Science 8, 327-341, December 2014, doi.org/10.1016/j.polar.2014.07.008.
6. Tei, S, Yonenobu, H., Suzuki, S., Ohyama, M., Gotanda, K., Nakagawa, T., Sugimoto, A. Reconstructed July temperatures since AD 1800, based on a tree-ring chronology network in the Northwest Pacific region, and implied large-scale atmospheric-oceanic interaction. Palaeogeography, Palaeoclimatology, Palaeoecology 435, 203-209, October 2015, doi.org/10.1016/j.palaeo.2015.06.012.
7. Tei, S, Yonenobu, H., Sugimoto, A., Ohta, T., Maximov, T. C. Reconstructed summer Palmer Drought Severity Index since 1850 AD based on δ13C of larch tree rings in eastern Siberia. Journal of Hydrology 529, 442-448, October 2015, doi.org/10.1016/j.jhydrol.2015.01.085.
8. Tei, S, Sugimoto, A, Yonenobu, H, Matsuura, Y, Osawa, A, Sato, H, Fujunuma, J, Maximov, T. C. Tree-ring analysis and modeling approaches yield contrary response of circumboreal forest productivity to climate change. Global Change Biology 23, 5179-5188, November 2017, DOI: 10.1111/gcb.13780
9. Takata, K., P. K. Patra, A. Kotani, J. Mori, D. Belikov, K. Ichii, T. Saeki, T. Ohta, K. Saito, M. Ueyama, A. Ito, S. Maksyutov, S. Miyazaki, E. J. Burke, A. Ganshin, Y. Iijima, T. Ise, H. Machiya, T. C. Maximov, Y. Niwa, R. O'ishi, H. Park, T. Sasai, H. Sato, S. Tei, R. Zhuravlev, T. Machida, A. Sugimoto, and S. Aoki., et al. Reconciliation of top-down and bottom-up CO2 fluxes in Siberian larch forest. Environmental Research Letters 12, December 2017, doi.org/10.1088/1748-9326/aa926d
10. Tei, S, Sugimoto, A, Liang, M., Yonenobu, H, Matsuura, Y, Osawa, A, Sato, H, Fujinuma, J, Maximov, T. C. Radial growth and physiological response of coniferous trees to Arctic amplification. Journal of Geophysical Research-Biogeosciences 122, 2786-2803, December 2017, DOI: 10.1002/2016JG003745
11. Tei, S, Sugimoto, A. Time lag and negative response of forest greenness and tree growth to warming over circumboreal forests. Global Change Biology in press, https://doi.org/10.1111/gcb.14135
12. Nagai, S, Akitsu, T (other 50 scientists, Tei, S (43th)) . 8 million phenological and sky images from 29 ecosystems from the Arctic to the tropics: the Phenological Eyes Network, Ecological Research in press.
Field survey in pan-arctic is like a psychedelic trip !!Analyses of tree-ring sample is like a alternative trip !!
Remarkable point in Russia→Golden haired beautiful girl and beautiful nature.
