气候变化领域集成服务门户(CCPortal): Assessment of the importance of increasing temperature and decreasing soil moisture on global ecosystem productivity using solar-induced chlorophyll fluorescence

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DOI	10.1111/gcb.16043
	Assessment of the importance of increasing temperature and decreasing soil moisture on global ecosystem productivity using solar-induced chlorophyll fluorescence
	Dang, Chaoya; Shao, Zhenfeng; Huang, Xiao; Qian, Jiaxin; Cheng, Gui; Ding, Qing; Fan, Yewen
发表日期	2022
ISSN	1354-1013
EISSN	1365-2486
起始页码	2066
结束页码	2080
卷号	28 期号:6
英文摘要	The accurate assessment of the global gross primary productivity (GPP) of vegetation is the key to estimating the global carbon cycle. Temperature (Ts) and soil moisture (SM) are essential for vegetation growth. It is acknowledged that the global Ts has shown an increasing trend, yet SM has shown a decreasing trend. However, the importance of SM and Ts changes on the productivity of global ecosystems remains unclear, as SM and Ts are strongly coupled through soil-atmosphere interactions. Using solar-induced chlorophyll fluorescence (SIF) as a proxy for GPP and by decoupling SM and Ts changes, our investigation shows Ts plays a more important role in SIF in 60% of the vegetation areas. Overall, increased Ts promotes SIF by mitigating the resistance from SM's reduction. However, the importance of SM and Ts varies, given different vegetation types. The results show that in the humid zone, the variation of Ts plays a more important role in SIF, but in the arid and semi-arid zones, the variation of SM plays a more important role; in the semi-humid zone, the disparity in the importance of SM and Ts is difficult to unravel. In addition, our results suggest that SIF is very sensitive to aridity gradients in arid and semi-arid ecosystems. By decoupling the intertwined SM-Ts impact on SIF, our study provides essential evidence that benefits future investigation on the factors the influence ecosystem productivity at regional or global scales.
英文关键词	decoupling; ecosystem productivity; remote sensing; soil moisture; solar-induced chlorophyll fluorescence; temperature
语种	英语
WOS研究方向	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS类目	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000740089400001
来源期刊	GLOBAL CHANGE BIOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/280796
作者单位	Wuhan University; University of Arkansas System; University of Arkansas Fayetteville
推荐引用方式 GB/T 7714	Dang, Chaoya,Shao, Zhenfeng,Huang, Xiao,et al. Assessment of the importance of increasing temperature and decreasing soil moisture on global ecosystem productivity using solar-induced chlorophyll fluorescence[J],2022,28(6).
APA	Dang, Chaoya.,Shao, Zhenfeng.,Huang, Xiao.,Qian, Jiaxin.,Cheng, Gui.,...&Fan, Yewen.(2022).Assessment of the importance of increasing temperature and decreasing soil moisture on global ecosystem productivity using solar-induced chlorophyll fluorescence.GLOBAL CHANGE BIOLOGY,28(6).
MLA	Dang, Chaoya,et al."Assessment of the importance of increasing temperature and decreasing soil moisture on global ecosystem productivity using solar-induced chlorophyll fluorescence".GLOBAL CHANGE BIOLOGY 28.6(2022).