干旱区生态环境知识资源中心(Arid): Water-use strategies and functional traits explain divergent linkages in physiological responses to simulated precipitation change

Arid

DOI	10.1016/j.scitotenv.2023.168238
	Water-use strategies and functional traits explain divergent linkages in physiological responses to simulated precipitation change
	Wang, Yang; Zhang, Cicheng; Xiao, Xiong; Wu, Huawu; Zhang, Jinghui
通讯作者	Xiao, X
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2024
卷号	908
英文摘要	As a part of global climate change, precipitation patterns in arid regions will change significantly, and the different responses of desert plants to these changes will lead to alterations in community composition, thereby impacting ecosystem stability. Thus, understanding the mechanism underlying the associations among physiological response variables considering changing precipitation is crucial. Here, water-use strategies, functional traits, and physiological processes (e.g., photosynthesis (An), transpiration (Tr), leaf water potential (psi l), stomatal conductance (gs), and soil respiration (Rs)) were measured in a precipitation experiment with two coexisting desert riparian species to determine how water-use strategies and functional traits operate together in generating physiological response mechanisms. The results showed that the two species exhibited divergent response pathways of physiological processes following rainfall events, although both were identified as isohydric plants with stringent stomatal regulation. For the shallow-rooted species N. sphaerocarpa, gs was sensitive to changes in both surface soil moisture (Swc) and psi l, and Swc was the primary factor influencing Rs. These results were supported by the preference for shallow water and predominance of functional traits associated with drought avoidance. For the deep-rooted species R. soongorica, variations in gs were decoupled from Swc and directly influenced by enhanced psi l, An was the main factor affecting Rs, while psi l negatively affected Rs. These correlations could be attributed to the preference for deep water and functional traits associated with drought tolerance. These findings suggest that R. soongorica had a stronger tolerance to environmental water deficits and may expand extensively under drier climatic conditions in the future.
英文关键词	Physiological processes Photosynthesis Leaf water potential Soil respiration Water-use strategies Functional traits
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001111774000001
WOS关键词	ASIAN DESERT SHRUBS ; SOIL RESPIRATION ; REAUMURIA-SOONGORICA ; STOMATAL BEHAVIOR ; CO2 EFFLUX ; LEAF ; ECOSYSTEM ; DROUGHT ; TRANSPORT ; PRODUCTIVITY
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405429
推荐引用方式 GB/T 7714	Wang, Yang,Zhang, Cicheng,Xiao, Xiong,et al. Water-use strategies and functional traits explain divergent linkages in physiological responses to simulated precipitation change[J],2024,908.
APA	Wang, Yang,Zhang, Cicheng,Xiao, Xiong,Wu, Huawu,&Zhang, Jinghui.(2024).Water-use strategies and functional traits explain divergent linkages in physiological responses to simulated precipitation change.SCIENCE OF THE TOTAL ENVIRONMENT,908.
MLA	Wang, Yang,et al."Water-use strategies and functional traits explain divergent linkages in physiological responses to simulated precipitation change".SCIENCE OF THE TOTAL ENVIRONMENT 908(2024).