干旱区生态环境知识资源中心(Arid): Spatiotemporal Analysis of Evapotranspiration and Effects of Water and Heat on Water Use Efficiency

Arid

DOI	10.3390/w13213019
	Spatiotemporal Analysis of Evapotranspiration and Effects of Water and Heat on Water Use Efficiency
	Tang, Yuan-Yuan; Chen, Jian-Ping; Zhang, Feng; Yuan, Shi-Song
通讯作者	Chen, JP (corresponding author), China Univ Geosci Beijing, Sch Earth Sci & Resouces, Beijing 100083, Peoples R China.
来源期刊	WATER
EISSN	2073-4441
出版年	2021
卷号	13 期号:21
英文摘要	Water Use Efficiency (WUE) is an important indicator of the carbon cycle in the hydrological and ecological system. It is of great significance to study the response of different hydrological processes to climate and to understand ecosystem carbon sink. However, little is known about the effects and mechanisms of precipitation and temperature on the WUE of different hydrological processes. Thus, three kinds of WUEs (GPP/E (eWUE), GPP/Et (tWUE), and GPP/P (pWUE)) are defined for three different hydrological indicators in semi-arid areas in this study in order to reveal the variation pattern of WUEs based on hydrological indicators and their response to climate. We found that in the past 15 years, the seasonal fluctuation of evapotranspiration in arid areas was large, and the spatial difference of WUE of different hydrological processes was obvious. In semi-arid areas, temperature had a significant effect on WUE (about 68-81%). However, precipitation had a lag effect on WUEs, and the negative impact of precipitation has a great influence (about 84-100%). Secondly, the threshold values of precipitation to WUEs (200 or 300 mm) and temperature to WUEs (2 or 7 & DEG;C) are also different from previous studies. This study advances our understanding of the influence of different hydrological processes on ecosystem carbon and climate.
英文关键词	evapotranspiration spatial and temporal water use efficiency Gleam Product
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:000718504600001
WOS关键词	NET PRIMARY PRODUCTION ; RECENT CLIMATE-CHANGE ; CARBON-DIOXIDE ; LOESS PLATEAU ; XINJIANG ; CHINA ; RESPONSES ; PRODUCTIVITY ; RESPIRATION ; TEMPERATURE
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368205
作者单位	[Tang, Yuan-Yuan; Chen, Jian-Ping] China Univ Geosci Beijing, Sch Earth Sci & Resouces, Beijing 100083, Peoples R China; [Tang, Yuan-Yuan] China Geol Survey, Changsha Nat Resources Comprehens Survey Ctr, Changsha, Peoples R China; [Zhang, Feng; Yuan, Shi-Song] Geophys Survey Ctr, China Geol Survey, Langfang 065000, Peoples R China
推荐引用方式 GB/T 7714	Tang, Yuan-Yuan,Chen, Jian-Ping,Zhang, Feng,et al. Spatiotemporal Analysis of Evapotranspiration and Effects of Water and Heat on Water Use Efficiency[J],2021,13(21).
APA	Tang, Yuan-Yuan,Chen, Jian-Ping,Zhang, Feng,&Yuan, Shi-Song.(2021).Spatiotemporal Analysis of Evapotranspiration and Effects of Water and Heat on Water Use Efficiency.WATER,13(21).
MLA	Tang, Yuan-Yuan,et al."Spatiotemporal Analysis of Evapotranspiration and Effects of Water and Heat on Water Use Efficiency".WATER 13.21(2021).