干旱区生态环境知识资源中心(Arid): Contrasting response of water use efficiency to soil moisture availability: From leaf to ecosystem in an arid oasis

Arid

DOI	10.1016/j.ecolind.2023.109964
	Contrasting response of water use efficiency to soil moisture availability: From leaf to ecosystem in an arid oasis
	Han, Tuo; Feng, Qi; Yu, Tengfei; Liu, Wei; Ma, Jinzhu; Zhao, Chenguang; Yang, Linshan; Zhang, Jutao; Li, Huiying
通讯作者	Feng, Q
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2023
卷号	147
英文摘要	Water availability profoundly and simultaneously affects the water cycle and disturbs terrestrial carbon cycle. However, there is currently a lack of knowledge about how carbon-water coupling occurs in response to soil moisture availability, and the underlying mechanisms. Here, using two kinds of observational datasets (i.e., leaf gas exchange and ecosystem eddy-covariance), we evaluated a normalized water-use efficiency (WUE) measure (g1, the stomatal conductance slope), and explored its dynamic behavior in response to soil moisture avail-ability. It was found that patterns of seasonal variations in WUE were not consistent between the two datasets. A contrasting response of G1 (the capital letter denotes g1 at the ecosystem level) to volumetric water content (VWC) during different stages of the growing season was confirmed, which was attributed to the different sensitivities of biological processes (i.e., photosynthesis and transpiration) to soil moisture availability. WUE variability during the main growing seasons was primarily controlled by transpiration, whereas WUE variability during the early and late growing seasons was mostly controlled by photosynthesis. Our findings suggest that phenology plays a significant role in regulating carbon-water coupling processes, and then exerts biotic control. The insights gained from this study will facilitate an in-depth understanding of the responses of plant biological processes to global change.
英文关键词	Arid oasis Water use efficiency Soil moisture availability Relative sensitivity Biological processes
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:000963779900001
WOS关键词	STOMATAL CONDUCTANCE ; PLANT-RESPONSES ; CARBON-DIOXIDE ; GAS-EXCHANGE ; DROUGHT ; CO2 ; PHOTOSYNTHESIS ; CLIMATE ; MODEL ; PRODUCTIVITY
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395917
推荐引用方式 GB/T 7714	Han, Tuo,Feng, Qi,Yu, Tengfei,et al. Contrasting response of water use efficiency to soil moisture availability: From leaf to ecosystem in an arid oasis[J],2023,147.
APA	Han, Tuo.,Feng, Qi.,Yu, Tengfei.,Liu, Wei.,Ma, Jinzhu.,...&Li, Huiying.(2023).Contrasting response of water use efficiency to soil moisture availability: From leaf to ecosystem in an arid oasis.ECOLOGICAL INDICATORS,147.
MLA	Han, Tuo,et al."Contrasting response of water use efficiency to soil moisture availability: From leaf to ecosystem in an arid oasis".ECOLOGICAL INDICATORS 147(2023).