Spatial pattern of GPP variations in terrestrial ecosystems and its drivers : Climatic factors, CO2 concentration and land-cover change, 1982-2015

Sun, Zhongyi; Wang, Xiufeng; Yamamoto, Haruhiko; Tani, Hiroshi; Zhong, Guosheng; Yin, Shuai; Guo, Enliang

Spatial pattern of GPP variations in terrestrial ecosystems and its drivers : Climatic factors, CO2 concentration and land-cover change, 1982-2015

Sun, Zhongyi; Wang, Xiufeng; Yamamoto, Haruhiko et al.

Ecological informatics, 2018, 46, 156-165

Permalink : https://hdl.handle.net/2115/78855

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アクセス権	open access
URI	https://hdl.handle.net/2115/78855
タイトル	Spatial pattern of GPP variations in terrestrial ecosystems and its drivers : Climatic factors, CO2 concentration and land-cover change, 1982-2015
著者	Sun, Zhongyi ; Wang, Xiufeng ; Yamamoto, Haruhiko ; Tani, Hiroshi ; Zhong, Guosheng ; Yin, Shuai ; Guo, Enliang
著者名 Sun, Zhongyi
著者名 Wang, Xiufeng
著者名 Yamamoto, Haruhiko
著者名 Tani, Hiroshi
著者名 Zhong, Guosheng
著者名 Yin, Shuai
著者名 Guo, Enliang
言語	英語
キーワード	Climate change
	Atmospheric CO2 concentration
	Land-cover change
	Gross primary production
	Terrestrial ecosystems
	C-Fix
発行日	2018-07
出版者	Elsevier
収録物名	Ecological informatics
巻(号)	46
ページ	156-165
抄録	Quantitative estimation of spatial pattern of gross primary production (GPP) trends and its drivers plays a crucial role in global change research. This study applied C-Fix model to estimate the net effect of each factor on GPP trends of 1982-2015, used an unsupervised classifier to group similar GPP trend behaviors, and analyzed the responses of GPP to changes in climatic, atmospheric and environmental drivers. According to the features of monthly GPP trends and the patterns of growing season, we presented nine categories as aids in interpreting large-scale behavior. Land-cover change (LCC), rising CO2, temperature and water conditions changes have the positive overall effect on GPP over the entire world, contrary to radiation change effects. The global average contributions of LCC, CO2, temperature, radiation and water on GPP trend are 4.57%, 65.73%, 13.07%, -7.24 and 11.74%, respectively. LCC and climatic factors changes have had a greater impact on GPP in terms of a specific location or regional rather than globally, and the interactions between factors are positive on GPP. The effects of climatic factors trends on GPP in different locations can be opposite, in general: regionally, GPP changes at middle and high latitudes are likely dominated by rises in radiation and temperature; at lower latitudes, GPP changes are likely to be driven by shifts in water conditions; at high altitudes, GPP changes are probably caused by changes in temperature and water conditions. These results will increase the understanding of the variations of carbon flux under future CO2, LCC and climate conditions.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
権利情報	© 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
PISSN	1574-9541
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.ecoinf.2018.06.006