Global S&T Development Trend Analysis Platform of Resources and Environment
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 | |
Chaoya Dang; Zhenfeng Shao; Xiao Huang; Jiaxin Qian; Gui Cheng; Qing Ding; Yewen Fan | |
2022-01-07 | |
发表期刊 | Global Change Biology |
出版年 | 2022 |
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. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/345100 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Chaoya Dang,Zhenfeng Shao,Xiao Huang,et al. Assessment of the importance of increasing temperature and decreasing soil moisture on global ecosystem productivity using solar-induced chlorophyll fluorescence[J]. Global Change Biology,2022. |
APA | Chaoya Dang.,Zhenfeng Shao.,Xiao Huang.,Jiaxin Qian.,Gui Cheng.,...&Yewen Fan.(2022).Assessment of the importance of increasing temperature and decreasing soil moisture on global ecosystem productivity using solar-induced chlorophyll fluorescence.Global Change Biology. |
MLA | Chaoya Dang,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 (2022). |
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