Grassland restoration reduces water yield in the headstream region of Yangtze River

Abstract Large–scale ecological restoration programs are considered as one of the key strategies to enhance ecosystem services. The Headstream region of Yangtze River (HYZR), which is claimed to be China’s Water Tower but witnessed the rapid grassland deterioration during 1970s–2000, has seen a seri...

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Autores principales:	Jia Li, Dan Liu, Tao Wang, Yingnian Li, Shiping Wang, Yuting Yang, Xiaoyi Wang, Hui Guo, Shushi Peng, Jinzhi Ding, Miaogen Shen, Lei Wang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4b5cfd782f454a678df54e666c08c7a3
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spelling	oai:doaj.org-article:4b5cfd782f454a678df54e666c08c7a32021-12-02T11:52:24ZGrassland restoration reduces water yield in the headstream region of Yangtze River10.1038/s41598-017-02413-92045-2322https://doaj.org/article/4b5cfd782f454a678df54e666c08c7a32017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02413-9https://doaj.org/toc/2045-2322Abstract Large–scale ecological restoration programs are considered as one of the key strategies to enhance ecosystem services. The Headstream region of Yangtze River (HYZR), which is claimed to be China’s Water Tower but witnessed the rapid grassland deterioration during 1970s–2000, has seen a series of grassland restoration programs since 2000. But few studies have thoroughly estimated the hydrological effect of this recent grassland restoration. Here we show that restoration significantly reduces growing-season water yield coefficient (WYC) from 0.37 ± 0.07 during 1982–1999 to 0.24 ± 0.07 during 2000–2012. Increased evapotranspiration (ET) is identified as the main driver for the observed decline in WYC. After factoring out climate change effects, vegetation restoration reduces streamflow by 9.75 ± 0.48 mm from the period 1982–1999 to the period 2000–2012, amounting to 16.4 ± 0. 80% of climatological growing-season streamflow. In contrary to water yield, restoration is conducive to soil water retention – an argument that is supported by long-term in-situ grazing exclusion experiment. Grassland restoration therefore improves local soil water conditions but undercuts gain in downstream water resources associated with precipitation increases.Jia LiDan LiuTao WangYingnian LiShiping WangYuting YangXiaoyi WangHui GuoShushi PengJinzhi DingMiaogen ShenLei WangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jia Li Dan Liu Tao Wang Yingnian Li Shiping Wang Yuting Yang Xiaoyi Wang Hui Guo Shushi Peng Jinzhi Ding Miaogen Shen Lei Wang Grassland restoration reduces water yield in the headstream region of Yangtze River
description	Abstract Large–scale ecological restoration programs are considered as one of the key strategies to enhance ecosystem services. The Headstream region of Yangtze River (HYZR), which is claimed to be China’s Water Tower but witnessed the rapid grassland deterioration during 1970s–2000, has seen a series of grassland restoration programs since 2000. But few studies have thoroughly estimated the hydrological effect of this recent grassland restoration. Here we show that restoration significantly reduces growing-season water yield coefficient (WYC) from 0.37 ± 0.07 during 1982–1999 to 0.24 ± 0.07 during 2000–2012. Increased evapotranspiration (ET) is identified as the main driver for the observed decline in WYC. After factoring out climate change effects, vegetation restoration reduces streamflow by 9.75 ± 0.48 mm from the period 1982–1999 to the period 2000–2012, amounting to 16.4 ± 0. 80% of climatological growing-season streamflow. In contrary to water yield, restoration is conducive to soil water retention – an argument that is supported by long-term in-situ grazing exclusion experiment. Grassland restoration therefore improves local soil water conditions but undercuts gain in downstream water resources associated with precipitation increases.
format	article
author	Jia Li Dan Liu Tao Wang Yingnian Li Shiping Wang Yuting Yang Xiaoyi Wang Hui Guo Shushi Peng Jinzhi Ding Miaogen Shen Lei Wang
author_facet	Jia Li Dan Liu Tao Wang Yingnian Li Shiping Wang Yuting Yang Xiaoyi Wang Hui Guo Shushi Peng Jinzhi Ding Miaogen Shen Lei Wang
author_sort	Jia Li
title	Grassland restoration reduces water yield in the headstream region of Yangtze River
title_short	Grassland restoration reduces water yield in the headstream region of Yangtze River
title_full	Grassland restoration reduces water yield in the headstream region of Yangtze River
title_fullStr	Grassland restoration reduces water yield in the headstream region of Yangtze River
title_full_unstemmed	Grassland restoration reduces water yield in the headstream region of Yangtze River
title_sort	grassland restoration reduces water yield in the headstream region of yangtze river
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/4b5cfd782f454a678df54e666c08c7a3
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Grassland restoration reduces water yield in the headstream region of Yangtze River

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