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DOI	10.1088/1748-9326/ab79e5
	Inferring CO2fertilization effect based on global monitoring land-atmosphere exchange with a theoretical model
	Ueyama M.; Ichii K.; Kobayashi H.; Kumagai T.; Beringer J.; Merbold L.; Euskirchen E.S.; Hirano T.; Marchesini L.B.; Baldocchi D.; Saitoh T.M.; Mizoguchi Y.; Ono K.; Kim J.; Varlagin A.; Kang M.; Shimizu T.; Kosugi Y.; Bret-Harte M.S.; MacHimura T.; Matsuura Y.; Ohta T.; Takagi K.; Takanashi S.; Yasuda Y.
发表日期	2020
ISSN	17489318
卷号	15 期号:8
英文摘要	Rising atmospheric CO2 concentration ([CO2]) enhances photosynthesis and reduces transpiration at the leaf, ecosystem, and global scale via the CO2 fertilization effect. The CO2 fertilization effect is among the most important processes for predicting the terrestrial carbon budget and future climate, yet it has been elusive to quantify. For evaluating the CO2 fertilization effect on land photosynthesis and transpiration, we developed a technique that isolated this effect from other confounding effects, such as changes in climate, using a noisy time series of observed land-atmosphere CO2 and water vapor exchange. Here, we evaluate the magnitude of this effect from 2000 to 2014 globally based on constraint optimization of gross primary productivity (GPP) and evapotranspiration in a canopy photosynthesis model over 104 global eddy-covariance stations. We found a consistent increase of GPP (0.138 ± 0.007% ppm-1; percentile per rising ppm of [CO2]) and a concomitant decrease in transpiration (-0.073% ± 0.006% ppm-1) due to rising [CO2]. Enhanced GPP from CO2 fertilization after the baseline year 2000 is, on average, 1.2% of global GPP, 12.4 g C m-2 yr-1 or 1.8 Pg C yr-1 at the years from 2001 to 2014. Our result demonstrates that the current increase in [CO2] could potentially explain the recent land CO2 sink at the global scale. © 2020 The Author(s). Published by IOP Publishing Ltd.
语种	英语
scopus关键词	Budget control; Constrained optimization; Evapotranspiration; Photosynthesis; Transpiration; Canopy photosynthesis; CO2 concentration; Concomitant decrease; Constraint optimizations; Global monitoring; Gross primary productivity; Theoretical modeling; Water-vapor exchange; Carbon dioxide; carbon dioxide; fertilizer application; global change; land-atmosphere interaction; theoretical study
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153907
作者单位	Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1, Gakuen-cho, Nakaku, Sakai, 599-8531, Japan; Center for Environmental Remote Sensing, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan; Center for Global Environmental Change, National Institute for Environmental Studies, 16-2 Onokawa, Tsukuba, 305-8506, Japan; Institute of Arctic Climate and Environment Change Research, Japan Agency for Marine-Earth Science and Technology, 3173-25 Showa-machi, Kanazawa-ku, Yokohama, 236-0001, Japan; Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan; Institute for Space-Earth Environmental Research, Nagoya University, Nagoya,Furo-cho, Chikusa-ku, 464-8601, Japan; School of Agriculture and Environment, University of Western Australia, 35 Stirling Hwy, Crawley, Perth, WA 6009, Australia; Mazingira Centre, International Livestock Research Institute (ILRI), PO Box 30709,00100, Nairobi, 30709, Kenya; Instit...
推荐引用方式 GB/T 7714	Ueyama M.,Ichii K.,Kobayashi H.,et al. Inferring CO2fertilization effect based on global monitoring land-atmosphere exchange with a theoretical model[J],2020,15(8).
APA	Ueyama M..,Ichii K..,Kobayashi H..,Kumagai T..,Beringer J..,...&Yasuda Y..(2020).Inferring CO2fertilization effect based on global monitoring land-atmosphere exchange with a theoretical model.Environmental Research Letters,15(8).
MLA	Ueyama M.,et al."Inferring CO2fertilization effect based on global monitoring land-atmosphere exchange with a theoretical model".Environmental Research Letters 15.8(2020).