干旱区生态环境知识资源中心(Arid): Leaf and ecosystem water use efficiencies differ in their global-scale patterns and drivers

Arid

DOI	10.1016/j.agrformet.2022.108919
	Leaf and ecosystem water use efficiencies differ in their global-scale patterns and drivers
	Li, Hailing; Wei, Maohong; Dong, Longwei; Hu, Weigang; Xiong, Junlan; Sun, Ying; Sun, Yuan; Yao, Shuran; Gong, Haiyang; Zhang, Yahui; Hou, Qingqing; Wang, Xiaoting; Xie, Shubin; Zhang, Liang; Akram, Muhammad Adnan; Rao, Zhiguo; Degen, A. Allan; Niklas, Karl J.; Ran, Jinzhi; Ye, Jian-sheng; Deng, Jianming
通讯作者	Deng, JM
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
ISSN	0168-1923
EISSN	1873-2240
出版年	2022
卷号	319
英文摘要	Water use efficiency (WUE) links carbon and water cycling and has been recognized as important in understanding the carbon-water budget of terrestrial ecosystems. However, there are few studies comparing WUE at leaf and ecosystem levels in response to environmental variables on a global scale. Here, we compare global-scale patterns and the drivers of leaf and ecosystem WUEs and quantify the relative influence of biotic and abiotic factors. Using published world-wide delta C-13 (carbon stable isotope composition) measurements for 6751 C-3 plant populations from 174 publications, as well as our own measurements of delta C-13 for 418 C-3 plant populations across drylands in China, and satellite-based datasets of gross primary production and evapotranspiration, we determined global patterns and the drivers of leaf and ecosystem WUEs. Leaf intrinsic WUE (iWUE) and ecosystem WUE displayed almost opposite trends, in response to abiotic factors on a global scale. iWUE was highest in arid regions and lowest in humid regions, whereas ecosystem WUE was lowest in arid regions and highest in humid regions. Phylogeny had a significant effect on iWUE. Mean annual temperature (MAT) was the strongest factor in predicting iWUE, whereas the most robust factor in predicting ecosystem WUE was leaf area index (LAI). The data indicate that the two different responses at the leaf and ecosystem levels must be considered when modeling carbon and water balances in response to climate change.
英文关键词	Leaf water use efficiency Abiotic drivers Biotic drivers Evapotranspiration Ecosystem water use efficiency Gross primary productivity
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000795869800006
WOS关键词	TERRESTRIAL ECOSYSTEMS ; EDDY COVARIANCE ; ELEVATED CO2 ; CARBON ; TEMPERATURE ; DROUGHT ; ISOTOPE ; DENSITY ; EVAPOTRANSPIRATION ; PHOTOSYNTHESIS
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/391570
推荐引用方式 GB/T 7714	Li, Hailing,Wei, Maohong,Dong, Longwei,et al. Leaf and ecosystem water use efficiencies differ in their global-scale patterns and drivers[J],2022,319.
APA	Li, Hailing.,Wei, Maohong.,Dong, Longwei.,Hu, Weigang.,Xiong, Junlan.,...&Deng, Jianming.(2022).Leaf and ecosystem water use efficiencies differ in their global-scale patterns and drivers.AGRICULTURAL AND FOREST METEOROLOGY,319.
MLA	Li, Hailing,et al."Leaf and ecosystem water use efficiencies differ in their global-scale patterns and drivers".AGRICULTURAL AND FOREST METEOROLOGY 319(2022).