干旱区生态环境知识资源中心(Arid): Soil coarsening alleviates precipitation constraint on vegetation growth in global drylands

Arid

DOI	10.1088/1748-9326/ac953f
	Soil coarsening alleviates precipitation constraint on vegetation growth in global drylands
	Zhu, Xinrong; Liu, Hongyan; Xu, Chongyang; Wu, Lu; Shi, Liang; Liu, Feng
通讯作者	Liu, HY
来源期刊	ENVIRONMENTAL RESEARCH LETTERS
ISSN	1748-9326
出版年	2022
卷号	17 期号:11
英文摘要	Drought is an important and complicated topic, and the specific variables that are considered to represent climate drought stress and plant water stress often generate highly contradictory conclusions. As the junction of the atmosphere and the biosphere, soil may play an important role in separating climatic drought stress from vegetation water constraint. Here, we conduct a comprehensive evaluation of water constraint on vegetation growth in global drylands by separating precipitation constraint and soil moisture constraint. Although global drylands are characterized by low precipitation supply capacity, there are indeed a large number of grids showing decoupled water availability for plants from variability of precipitation, with ratios of 47%, 64%, and 61% for arid, semiarid, and subhumid regions, respectively. Soil properties, instead of climate and root length regimes, can explain the water constraint divergence between precipitation and soil moisture. Sand content emerges as the most significant soil property to weaken the precipitation constraint on vegetation growth, with a 1% increase in sand content of global arid, semiarid, and dry subhumid regions increasing an average of 0.31, 0.45, and 0.04 gC m(-2) yr(-1) gross primary productivity (GPP) deviation from the theoretical GPP determined by precipitation, respectively. This study provides new insight into how soil texture interacts with precipitation constraints to influence plant-available water in global drylands, which contributes to assessing ecological drought in global drylands.
英文关键词	ecological drought desertification vegetation growth soil texture dryland
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000869980500001
WOS关键词	DROUGHT ; CLIMATE ; BALANCE ; MODELS
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392512
推荐引用方式 GB/T 7714	Zhu, Xinrong,Liu, Hongyan,Xu, Chongyang,et al. Soil coarsening alleviates precipitation constraint on vegetation growth in global drylands[J],2022,17(11).
APA	Zhu, Xinrong,Liu, Hongyan,Xu, Chongyang,Wu, Lu,Shi, Liang,&Liu, Feng.(2022).Soil coarsening alleviates precipitation constraint on vegetation growth in global drylands.ENVIRONMENTAL RESEARCH LETTERS,17(11).
MLA	Zhu, Xinrong,et al."Soil coarsening alleviates precipitation constraint on vegetation growth in global drylands".ENVIRONMENTAL RESEARCH LETTERS 17.11(2022).