The contribution of human agricultural activities to increasing evapotranspiration is significantly greater than climate change effect over Heihe agricultural region

Abstract Evapotranspiration (ET) is a major component linking the water, energy, and carbon cycles. Understanding changes in ET and the relative contribution rates of human activity and of climate change at the basin scale is important for sound water resources management. In this study, changes in...

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Autores principales:	Minzhong Zou, Jun Niu, Shaozhong Kang, Xiaolin Li, Hongna Lu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7735c5fdb8624eca8e92179caa8bbcf1
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spelling	oai:doaj.org-article:7735c5fdb8624eca8e92179caa8bbcf12021-12-02T15:05:18ZThe contribution of human agricultural activities to increasing evapotranspiration is significantly greater than climate change effect over Heihe agricultural region10.1038/s41598-017-08952-52045-2322https://doaj.org/article/7735c5fdb8624eca8e92179caa8bbcf12017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08952-5https://doaj.org/toc/2045-2322Abstract Evapotranspiration (ET) is a major component linking the water, energy, and carbon cycles. Understanding changes in ET and the relative contribution rates of human activity and of climate change at the basin scale is important for sound water resources management. In this study, changes in ET in the Heihe agricultural region in northwest China during 1984–2014 were examined using remotely-sensed ET data with the Soil and Water Assessment Tool (SWAT). Correlation analysis identified the dominant factors that influence change in ET per unit area and those that influence change in total ET. Factor analysis identified the relative contribution rates of the dominant factors in each case. The results show that human activity, which includes factors for agronomy and irrigation, and climate change, including factors for precipitation and relative humidity, both contribute to increases in ET per unit area at rates of 60.93% and 28.01%, respectively. Human activity, including the same factors, and climate change, including factors for relative humidity and wind speed, contribute to increases in total ET at rates of 53.86% and 35.68%, respectively. Overall, in the Heihe agricultural region, the contribution of human agricultural activities to increased ET was significantly greater than that of climate change.Minzhong ZouJun NiuShaozhong KangXiaolin LiHongna LuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-14 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Minzhong Zou Jun Niu Shaozhong Kang Xiaolin Li Hongna Lu The contribution of human agricultural activities to increasing evapotranspiration is significantly greater than climate change effect over Heihe agricultural region
description	Abstract Evapotranspiration (ET) is a major component linking the water, energy, and carbon cycles. Understanding changes in ET and the relative contribution rates of human activity and of climate change at the basin scale is important for sound water resources management. In this study, changes in ET in the Heihe agricultural region in northwest China during 1984–2014 were examined using remotely-sensed ET data with the Soil and Water Assessment Tool (SWAT). Correlation analysis identified the dominant factors that influence change in ET per unit area and those that influence change in total ET. Factor analysis identified the relative contribution rates of the dominant factors in each case. The results show that human activity, which includes factors for agronomy and irrigation, and climate change, including factors for precipitation and relative humidity, both contribute to increases in ET per unit area at rates of 60.93% and 28.01%, respectively. Human activity, including the same factors, and climate change, including factors for relative humidity and wind speed, contribute to increases in total ET at rates of 53.86% and 35.68%, respectively. Overall, in the Heihe agricultural region, the contribution of human agricultural activities to increased ET was significantly greater than that of climate change.
format	article
author	Minzhong Zou Jun Niu Shaozhong Kang Xiaolin Li Hongna Lu
author_facet	Minzhong Zou Jun Niu Shaozhong Kang Xiaolin Li Hongna Lu
author_sort	Minzhong Zou
title	The contribution of human agricultural activities to increasing evapotranspiration is significantly greater than climate change effect over Heihe agricultural region
title_short	The contribution of human agricultural activities to increasing evapotranspiration is significantly greater than climate change effect over Heihe agricultural region
title_full	The contribution of human agricultural activities to increasing evapotranspiration is significantly greater than climate change effect over Heihe agricultural region
title_fullStr	The contribution of human agricultural activities to increasing evapotranspiration is significantly greater than climate change effect over Heihe agricultural region
title_full_unstemmed	The contribution of human agricultural activities to increasing evapotranspiration is significantly greater than climate change effect over Heihe agricultural region
title_sort	contribution of human agricultural activities to increasing evapotranspiration is significantly greater than climate change effect over heihe agricultural region
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/7735c5fdb8624eca8e92179caa8bbcf1
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The contribution of human agricultural activities to increasing evapotranspiration is significantly greater than climate change effect over Heihe agricultural region

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