气候变化领域集成服务门户(CCPortal): Soil moisture dominates dryness stress on ecosystem production globally

CCPortal

DOI	10.1038/s41467-020-18631-1
	Soil moisture dominates dryness stress on ecosystem production globally
	Liu, Laibao; Gudmundsson, Lukas; Hauser, Mathias; Qin, Dahe; Li, Shuangcheng; Seneviratne, Sonia I.
发表日期	2020
ISSN	2041-1723
卷号	11 期号:1
英文摘要	Dryness stress can limit vegetation growth and is often characterized by low soil moisture (SM) and high atmospheric water demand (vapor pressure deficit, VPD). However, the relative role of SM and VPD in limiting ecosystem production remains debated and is difficult to disentangle, as SM and VPD are coupled through land-atmosphere interactions, hindering the ability to predict ecosystem responses to dryness. Here, we combine satellite observations of solar-induced fluorescence with estimates of SM and VPD and show that SM is the dominant driver of dryness stress on ecosystem production across more than 70% of vegetated land areas with valid data. Moreover, after accounting for SM-VPD coupling, VPD effects on ecosystem production are much smaller across large areas. We also find that SM stress is strongest in semi-arid ecosystems. Our results clarify a longstanding question and open new avenues for improving models to allow a better management of drought risk.
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
来源期刊	NATURE COMMUNICATIONS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158815
作者单位	Liu, LB; Seneviratne, SI (corresponding author), Swiss Fed Inst Technol, Inst Atmospher & Climate Sci, Zurich, Switzerland.; Liu, LB (corresponding author), Peking Univ, Coll Urban & Environm Sci, Beijing, Peoples R China.
推荐引用方式 GB/T 7714	Liu, Laibao,Gudmundsson, Lukas,Hauser, Mathias,et al. Soil moisture dominates dryness stress on ecosystem production globally[J],2020,11(1).
APA	Liu, Laibao,Gudmundsson, Lukas,Hauser, Mathias,Qin, Dahe,Li, Shuangcheng,&Seneviratne, Sonia I..(2020).Soil moisture dominates dryness stress on ecosystem production globally.NATURE COMMUNICATIONS,11(1).
MLA	Liu, Laibao,et al."Soil moisture dominates dryness stress on ecosystem production globally".NATURE COMMUNICATIONS 11.1(2020).