Quantifying the effect of environmental drivers on water conservation variation in the eastern Loess Plateau, China

The Loess Plateau is famous for its water shortages and soil erosion, quantitatively assessing the water conservation function is of great significance to maintain regional ecological security. Zhanghe River Basin with severe water conflicts in eastern Loess Plateau, was selected to investigate the...

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Autores principales:	Jinfeng Wang, Taoli Wu, Qing Li, Sheng Wang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Water conservation SWAT Climate change Land use The Loess Plateau Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/6b9f8c1389a849f68927d0e5fc0ecf09
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spelling	oai:doaj.org-article:6b9f8c1389a849f68927d0e5fc0ecf092021-12-01T04:47:19ZQuantifying the effect of environmental drivers on water conservation variation in the eastern Loess Plateau, China1470-160X10.1016/j.ecolind.2021.107493https://doaj.org/article/6b9f8c1389a849f68927d0e5fc0ecf092021-06-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21001588https://doaj.org/toc/1470-160XThe Loess Plateau is famous for its water shortages and soil erosion, quantitatively assessing the water conservation function is of great significance to maintain regional ecological security. Zhanghe River Basin with severe water conflicts in eastern Loess Plateau, was selected to investigate the variation characteristics of water conservation. The results showed that water conservation decreased slightly from 1960 to 2016, with a rate of 1.1 × 108 m3/10a. The mean annual water conservation (MAWC) is 31.46 × 108 m3, and accounted for 32% of the precipitation. The spatial pattern of water conservation and land use type were significantly correlated: More water resources (>213 mm) were conserved in the north hilly region with high vegetation coverage, while water resources were less (<140 mm) conserved in the south cropland and construction land. Using the calibrated Soil and Water Assessment Tool (SWAT), the contribution rates of climate change, land use, and other human activities (e.g. engineering measures, water consumption) on water conservation were quantitatively estimated through setting several different environmental scenarios. The research period (1974–2016) was divided into the baseline period (P0: 1974–1994), dramatically-increased period (P1: 1995–2005) and weakly-increased period (P2: 2006–2016). The attribution results indicated that other human activities were the dominant factor, and exerted greater effects on the increase of water conservation in the recent decades, with an increasing contribution from 82.88% in P1 to 122.16% in P2. Climate change was the secondary factor, and it increased water conservation in P1 but reduced it in P2, with the contribution from 18.01% to −15.45%. The contributions of climate change, land use/cover change (LUCC) and other human activities to water conservation reduction during P1-P2 were 32.53%, 1.67%, and 65.80%, respectively. In the recent decades, other human activities have become the most important factors on water conservation reduction, in which human water consumption contributed to 60.1%Jinfeng WangTaoli WuQing LiSheng WangElsevierarticleWater conservationSWATClimate changeLand useThe Loess PlateauEcologyQH540-549.5ENEcological Indicators, Vol 125, Iss , Pp 107493- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Water conservation SWAT Climate change Land use The Loess Plateau Ecology QH540-549.5
spellingShingle	Water conservation SWAT Climate change Land use The Loess Plateau Ecology QH540-549.5 Jinfeng Wang Taoli Wu Qing Li Sheng Wang Quantifying the effect of environmental drivers on water conservation variation in the eastern Loess Plateau, China
description	The Loess Plateau is famous for its water shortages and soil erosion, quantitatively assessing the water conservation function is of great significance to maintain regional ecological security. Zhanghe River Basin with severe water conflicts in eastern Loess Plateau, was selected to investigate the variation characteristics of water conservation. The results showed that water conservation decreased slightly from 1960 to 2016, with a rate of 1.1 × 108 m3/10a. The mean annual water conservation (MAWC) is 31.46 × 108 m3, and accounted for 32% of the precipitation. The spatial pattern of water conservation and land use type were significantly correlated: More water resources (>213 mm) were conserved in the north hilly region with high vegetation coverage, while water resources were less (<140 mm) conserved in the south cropland and construction land. Using the calibrated Soil and Water Assessment Tool (SWAT), the contribution rates of climate change, land use, and other human activities (e.g. engineering measures, water consumption) on water conservation were quantitatively estimated through setting several different environmental scenarios. The research period (1974–2016) was divided into the baseline period (P0: 1974–1994), dramatically-increased period (P1: 1995–2005) and weakly-increased period (P2: 2006–2016). The attribution results indicated that other human activities were the dominant factor, and exerted greater effects on the increase of water conservation in the recent decades, with an increasing contribution from 82.88% in P1 to 122.16% in P2. Climate change was the secondary factor, and it increased water conservation in P1 but reduced it in P2, with the contribution from 18.01% to −15.45%. The contributions of climate change, land use/cover change (LUCC) and other human activities to water conservation reduction during P1-P2 were 32.53%, 1.67%, and 65.80%, respectively. In the recent decades, other human activities have become the most important factors on water conservation reduction, in which human water consumption contributed to 60.1%
format	article
author	Jinfeng Wang Taoli Wu Qing Li Sheng Wang
author_facet	Jinfeng Wang Taoli Wu Qing Li Sheng Wang
author_sort	Jinfeng Wang
title	Quantifying the effect of environmental drivers on water conservation variation in the eastern Loess Plateau, China
title_short	Quantifying the effect of environmental drivers on water conservation variation in the eastern Loess Plateau, China
title_full	Quantifying the effect of environmental drivers on water conservation variation in the eastern Loess Plateau, China
title_fullStr	Quantifying the effect of environmental drivers on water conservation variation in the eastern Loess Plateau, China
title_full_unstemmed	Quantifying the effect of environmental drivers on water conservation variation in the eastern Loess Plateau, China
title_sort	quantifying the effect of environmental drivers on water conservation variation in the eastern loess plateau, china
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/6b9f8c1389a849f68927d0e5fc0ecf09
work_keys_str_mv	AT jinfengwang quantifyingtheeffectofenvironmentaldriversonwaterconservationvariationintheeasternloessplateauchina AT taoliwu quantifyingtheeffectofenvironmentaldriversonwaterconservationvariationintheeasternloessplateauchina AT qingli quantifyingtheeffectofenvironmentaldriversonwaterconservationvariationintheeasternloessplateauchina AT shengwang quantifyingtheeffectofenvironmentaldriversonwaterconservationvariationintheeasternloessplateauchina
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Quantifying the effect of environmental drivers on water conservation variation in the eastern Loess Plateau, China

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