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Article

Differences in Reference Evapotranspiration Variation and Climate-Driven Patterns in Different Altitudes of the Qinghai–Tibet Plateau (1961–2017)

College of Water Sciences, Beijing Normal University, Beijing 100875, China
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Author to whom correspondence should be addressed.
Academic Editors: Roberto Ranzi and Kazimierz Banasik
Water 2021, 13(13), 1749; https://doi.org/10.3390/w13131749
Received: 25 April 2021 / Revised: 26 May 2021 / Accepted: 22 June 2021 / Published: 24 June 2021
(This article belongs to the Special Issue Climate Change Impact and Adaptation in Water Resources Management)
Reference evapotranspiration (ET0) in the hydrological cycle is one of the processes that is significantly affected by climate change. The Qinghai–Tibet Plateau (QTP) is universally recognized as a region that is sensitive to climate change. In this study, an area elevation curve is used to divide the study area into three elevation zones: low (below 2800 m), medium (2800–3800 m) and high (3800–5000 m). The cumulative anomaly curve, Mann–Kendall test, moving t-test and Yamamoto test results show that a descending mutation occurred in the 1980s, and an ascending mutation occurred in 2005. Moreover, a delay effect on the descending mutation in addition to an enhancement effect on the ascending mutation of the annual ET0 were coincident with the increasing altitude below 5000 m. The annual ET0 series for the QTP and different elevation zones showed an increasing trend from 1961 to 2017 and increased more significantly with the increase in elevation. Path analysis showed that the climate-driven patterns in different elevation zones are quite different. However, after the ascending mutations occurred in 2005, the maximum air temperature (Tmax) became the common dominant driving factor for the whole region and the three elevation zones. View Full-Text
Keywords: ET0; mutation analysis; temporal trend; path analysis; climate driving factor ET0; mutation analysis; temporal trend; path analysis; climate driving factor
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MDPI and ACS Style

Liu, Y.; Yao, X.; Wang, Q.; Yu, J.; Jiang, Q.; Jiang, W.; Li, L. Differences in Reference Evapotranspiration Variation and Climate-Driven Patterns in Different Altitudes of the Qinghai–Tibet Plateau (1961–2017). Water 2021, 13, 1749. https://doi.org/10.3390/w13131749

AMA Style

Liu Y, Yao X, Wang Q, Yu J, Jiang Q, Jiang W, Li L. Differences in Reference Evapotranspiration Variation and Climate-Driven Patterns in Different Altitudes of the Qinghai–Tibet Plateau (1961–2017). Water. 2021; 13(13):1749. https://doi.org/10.3390/w13131749

Chicago/Turabian Style

Liu, Yuan, Xiaolei Yao, Qianyang Wang, Jingshan Yu, Qi Jiang, Weiwei Jiang, and Luyi Li. 2021. "Differences in Reference Evapotranspiration Variation and Climate-Driven Patterns in Different Altitudes of the Qinghai–Tibet Plateau (1961–2017)" Water 13, no. 13: 1749. https://doi.org/10.3390/w13131749

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