Spatiotemporal Analysis of Evapotranspiration and Effects of Water and Heat on Water Use Efficiency

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...

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Autores principales:	Yuan-Yuan Tang, Jian-Ping Chen, Feng Zhang, Shi-Song Yuan
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	evapotranspiration spatial and temporal water use efficiency Gleam Product Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
Acceso en línea:	https://doaj.org/article/5ab0e2b77f3e4530b20b36741274c485
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id	oai:doaj.org-article:5ab0e2b77f3e4530b20b36741274c485
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spelling	oai:doaj.org-article:5ab0e2b77f3e4530b20b36741274c4852021-11-11T19:54:44ZSpatiotemporal Analysis of Evapotranspiration and Effects of Water and Heat on Water Use Efficiency10.3390/w132130192073-4441https://doaj.org/article/5ab0e2b77f3e4530b20b36741274c4852021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4441/13/21/3019https://doaj.org/toc/2073-4441Water 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 °C) are also different from previous studies. This study advances our understanding of the influence of different hydrological processes on ecosystem carbon and climate.Yuan-Yuan TangJian-Ping ChenFeng ZhangShi-Song YuanMDPI AGarticleevapotranspirationspatial and temporalwater use efficiencyGleam ProductHydraulic engineeringTC1-978Water supply for domestic and industrial purposesTD201-500ENWater, Vol 13, Iss 3019, p 3019 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	evapotranspiration spatial and temporal water use efficiency Gleam Product Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
spellingShingle	evapotranspiration spatial and temporal water use efficiency Gleam Product Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 Yuan-Yuan Tang Jian-Ping Chen Feng Zhang Shi-Song Yuan Spatiotemporal Analysis of Evapotranspiration and Effects of Water and Heat on Water Use Efficiency
description	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 °C) are also different from previous studies. This study advances our understanding of the influence of different hydrological processes on ecosystem carbon and climate.
format	article
author	Yuan-Yuan Tang Jian-Ping Chen Feng Zhang Shi-Song Yuan
author_facet	Yuan-Yuan Tang Jian-Ping Chen Feng Zhang Shi-Song Yuan
author_sort	Yuan-Yuan Tang
title	Spatiotemporal Analysis of Evapotranspiration and Effects of Water and Heat on Water Use Efficiency
title_short	Spatiotemporal Analysis of Evapotranspiration and Effects of Water and Heat on Water Use Efficiency
title_full	Spatiotemporal Analysis of Evapotranspiration and Effects of Water and Heat on Water Use Efficiency
title_fullStr	Spatiotemporal Analysis of Evapotranspiration and Effects of Water and Heat on Water Use Efficiency
title_full_unstemmed	Spatiotemporal Analysis of Evapotranspiration and Effects of Water and Heat on Water Use Efficiency
title_sort	spatiotemporal analysis of evapotranspiration and effects of water and heat on water use efficiency
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/5ab0e2b77f3e4530b20b36741274c485
work_keys_str_mv	AT yuanyuantang spatiotemporalanalysisofevapotranspirationandeffectsofwaterandheatonwateruseefficiency AT jianpingchen spatiotemporalanalysisofevapotranspirationandeffectsofwaterandheatonwateruseefficiency AT fengzhang spatiotemporalanalysisofevapotranspirationandeffectsofwaterandheatonwateruseefficiency AT shisongyuan spatiotemporalanalysisofevapotranspirationandeffectsofwaterandheatonwateruseefficiency
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Spatiotemporal Analysis of Evapotranspiration and Effects of Water and Heat on Water Use Efficiency

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