干旱区生态环境知识资源中心(Arid): A global synthesis of transpiration rate and evapotranspiration partitioning in the shrub ecosystems

Arid

DOI	10.1016/j.jhydrol.2021.127417
	A global synthesis of transpiration rate and evapotranspiration partitioning in the shrub ecosystems
	Gao, Guangyao; Wang, Di; Zha, Tianshan; Wang, Lixin; Fu, Bojie
通讯作者	Fu, BJ (corresponding author)，Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China.
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2022
卷号	606
英文摘要	Transpiration (T) is a fundamental process in understanding the ecophysiology of plants, and it is the dominant component of evapotranspiration (ET) in the terrestrial water cycle. Although previous studies have examined T characteristics of shrub ecosystems in some regions, global-scale synthesis that integrates the spatial variations of T, ET and ratio of T to ET (T/ET) and the associated influences of bio-/abiotic factors in the shrub ecosystems is currently lacking. In this study, we synthesized and analyzed T rate, ET rate and T/ET of the shrub ecosystems from the peer-reviewed articles using field observations around the world. These studies were mainly distributed in drylands with aridity index (ratio of precipitation to potential ET) < 0.65, which accounted for 86.4% of the study locations. Globally, the mean daily T and ET rates of shrubs were 1.5 +/- 1.0 mm d(-1) and 2.4 +/- 0.8 mm d(-1), with coefficient of variation of 63.2% and 36.2% among the study locations, respectively. Mean T/ET of the shrubs over the growing season was 0.54 +/- 0.14, which was generally lower compared with forest, grassland and cropland ecosystems. The T rate of shrubs was positively related to shrub age, shrub height, leaf area index, and vegetation coverage (p < 0.05), and the effects of biotic factors on T rate were stronger compared with abiotic factors. The ET rate of shrubs was positively related to aridity index, long-term annual mean precipitation, mean soil water content, as well as shrub height and vegetation coverage (p < 0.05). By contrast, the effects of biotic factors on variations of shrub T/ET were weaker than those of abiotic factors, and the T/ET of shrubs was negatively related to aridity index, long-term annual mean precipitation and mean soil water content, but positively related to latitude (p < 0.05). This study is an important supplement of our knowledge gap in terrestrial water cycle, and the findings suggest that T accounted for about half of the water into atmosphere from shrub ecosystems, and the variations of T rate of shrubs were mainly controlled by biotic factors, whereas ET rate and T/ET was mainly affected by abiotic factors.
英文关键词	Transpiration Evapotranspiration partitioning Shrub Spatial variations Biotic/abiotic factors
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000752472600001
WOS关键词	SAP FLOW CHARACTERISTICS ; WATER-USE EFFICIENCY ; SOIL-WATER ; CARAGANA-KORSHINSKII ; DESERT REGION ; ENVIRONMENTAL-FACTORS ; HIPPOPHAE-RHAMNOIDES ; STOMATAL CONDUCTANCE ; CANOPY CONDUCTANCE ; VEGETATION CONTROL
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376246
作者单位	[Gao, Guangyao; Wang, Di; Fu, Bojie] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China; [Gao, Guangyao; Fu, Bojie] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Wang, Di] China Agr Univ, Coll Water Resources & Civil Engn, Beijing 100083, Peoples R China; [Zha, Tianshan] Beijing Forestry Univ, Sch Soil & Water Conservat, Yanchi Res Stn, Beijing 100083, Peoples R China; [Wang, Lixin] Indiana Univ Purdue Univ Indianapolis, Dept Earth Sci, Indianapolis, IN 46202 USA
推荐引用方式 GB/T 7714	Gao, Guangyao,Wang, Di,Zha, Tianshan,et al. A global synthesis of transpiration rate and evapotranspiration partitioning in the shrub ecosystems[J],2022,606.
APA	Gao, Guangyao,Wang, Di,Zha, Tianshan,Wang, Lixin,&Fu, Bojie.(2022).A global synthesis of transpiration rate and evapotranspiration partitioning in the shrub ecosystems.JOURNAL OF HYDROLOGY,606.
MLA	Gao, Guangyao,et al."A global synthesis of transpiration rate and evapotranspiration partitioning in the shrub ecosystems".JOURNAL OF HYDROLOGY 606(2022).