Contrasting runoff trends between dry and wet parts of eastern Tibetan Plateau

Abstract As the “Asian Water Tower”, the Tibetan Plateau (TP) provides water resources for more than 1.4 billion people, but suffers from climatic and environmental changes, followed by the changes in water balance components. We used state-of-the-art satellite-based products to estimate spatial and...

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Autores principales:	Yuanyuan Wang, Yongqiang Zhang, Francis H. S. Chiew, Tim R. McVicar, Lu Zhang, Hongxia Li, Guanghua Qin
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/91f9a799961d48e0a6d9586e67ef0551
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spelling	oai:doaj.org-article:91f9a799961d48e0a6d9586e67ef05512021-12-02T15:06:23ZContrasting runoff trends between dry and wet parts of eastern Tibetan Plateau10.1038/s41598-017-15678-x2045-2322https://doaj.org/article/91f9a799961d48e0a6d9586e67ef05512017-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-15678-xhttps://doaj.org/toc/2045-2322Abstract As the “Asian Water Tower”, the Tibetan Plateau (TP) provides water resources for more than 1.4 billion people, but suffers from climatic and environmental changes, followed by the changes in water balance components. We used state-of-the-art satellite-based products to estimate spatial and temporal variations and trends in annual precipitation, evapotranspiration and total water storage change across eastern TP, which were then used to reconstruct an annual runoff variability series for 2003–2014. The basin-scale reconstructed streamflow variability matched well with gauge observations for five large rivers. Annual runoff increased strongly in dry part because of increases in precipitation, but decreased in wet part because of decreases in precipitation, aggravated by noticeable increases in evapotranspiration in the north of wet part. Although precipitation primarily governed temporal-spatial pattern of runoff, total water storage change contributed greatly to runoff variation in regions with wide-spread permanent snow/ice or permafrost. Our study indicates that the contrasting runoff trends between the dry and wet parts of eastern TP requires a change in water security strategy, and attention should be paid to the negative water resources impacts detected for southwestern part which has undergone vast glacier retreat and decreasing precipitation.Yuanyuan WangYongqiang ZhangFrancis H. S. ChiewTim R. McVicarLu ZhangHongxia LiGuanghua QinNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yuanyuan Wang Yongqiang Zhang Francis H. S. Chiew Tim R. McVicar Lu Zhang Hongxia Li Guanghua Qin Contrasting runoff trends between dry and wet parts of eastern Tibetan Plateau
description	Abstract As the “Asian Water Tower”, the Tibetan Plateau (TP) provides water resources for more than 1.4 billion people, but suffers from climatic and environmental changes, followed by the changes in water balance components. We used state-of-the-art satellite-based products to estimate spatial and temporal variations and trends in annual precipitation, evapotranspiration and total water storage change across eastern TP, which were then used to reconstruct an annual runoff variability series for 2003–2014. The basin-scale reconstructed streamflow variability matched well with gauge observations for five large rivers. Annual runoff increased strongly in dry part because of increases in precipitation, but decreased in wet part because of decreases in precipitation, aggravated by noticeable increases in evapotranspiration in the north of wet part. Although precipitation primarily governed temporal-spatial pattern of runoff, total water storage change contributed greatly to runoff variation in regions with wide-spread permanent snow/ice or permafrost. Our study indicates that the contrasting runoff trends between the dry and wet parts of eastern TP requires a change in water security strategy, and attention should be paid to the negative water resources impacts detected for southwestern part which has undergone vast glacier retreat and decreasing precipitation.
format	article
author	Yuanyuan Wang Yongqiang Zhang Francis H. S. Chiew Tim R. McVicar Lu Zhang Hongxia Li Guanghua Qin
author_facet	Yuanyuan Wang Yongqiang Zhang Francis H. S. Chiew Tim R. McVicar Lu Zhang Hongxia Li Guanghua Qin
author_sort	Yuanyuan Wang
title	Contrasting runoff trends between dry and wet parts of eastern Tibetan Plateau
title_short	Contrasting runoff trends between dry and wet parts of eastern Tibetan Plateau
title_full	Contrasting runoff trends between dry and wet parts of eastern Tibetan Plateau
title_fullStr	Contrasting runoff trends between dry and wet parts of eastern Tibetan Plateau
title_full_unstemmed	Contrasting runoff trends between dry and wet parts of eastern Tibetan Plateau
title_sort	contrasting runoff trends between dry and wet parts of eastern tibetan plateau
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/91f9a799961d48e0a6d9586e67ef0551
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_version_	1718388462989606912

Contrasting runoff trends between dry and wet parts of eastern Tibetan Plateau

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