Reduced Runoff in the Upper Yangtze River Due To Comparable Contribution of Anthropogenic and Climate Changes

Abstract The changing climate and intensifying human activities have made an impact on the hydrological processes in the upper Yangtze River (UYR), but quantifying their effects remains uncertain. This study used the Budyko framework to investigate the response of runoff (Q) to climate change and hu...

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Main Authors: Feng Zeng, Qiulan He, Yao Li, Weiyu Shi, Ruowen Yang, Mingguo Ma, Guangwei Huang, Junlan Xiao, Xinyue Yang, Dongrui Di
Format: Article
Language:English
Published: Wiley 2024-07-01
Series:Earth's Future
Subjects:
Online Access:https://doi.org/10.1029/2023EF004028
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author Feng Zeng
Qiulan He
Yao Li
Weiyu Shi
Ruowen Yang
Mingguo Ma
Guangwei Huang
Junlan Xiao
Xinyue Yang
Dongrui Di
author_facet Feng Zeng
Qiulan He
Yao Li
Weiyu Shi
Ruowen Yang
Mingguo Ma
Guangwei Huang
Junlan Xiao
Xinyue Yang
Dongrui Di
author_sort Feng Zeng
collection DOAJ
description Abstract The changing climate and intensifying human activities have made an impact on the hydrological processes in the upper Yangtze River (UYR), but quantifying their effects remains uncertain. This study used the Budyko framework to investigate the response of runoff (Q) to climate change and human activities during 1956–2017 and evaluate the impacts of human activities, including land use/cover change, water use, dam construction, and vegetation change, on watershed characteristic. Results show that climate change is the dominant driver of Q variations in the Wujiang River (WJR), Jialing River (JLR), and Jinsha River (JSR) watersheds, with contributions of 58.6%, 66.9%, and 67.6%, respectively. However, in Mingjiang River (MJR) and UYR watersheds, human activities contribute more to Q variations with 55.2% and 51.2%, respectively. Human activities play important roles in variation of watershed characteristics, and they can explain 22%, 26%, 36%, 25%, and 53% of the watershed character change in UYR, WJR, JLR, MJR, and JSR, respectively. This study conducts a comprehensive analysis of the causes of Q change in UYR, and provides a new perspective to explore the effects of specific human activities on watershed characteristics.
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institution Kabale University
issn 2328-4277
language English
publishDate 2024-07-01
publisher Wiley
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spelling doaj-art-a1456757364349798078df3dd7d8e0602025-01-29T07:58:53ZengWileyEarth's Future2328-42772024-07-01127n/an/a10.1029/2023EF004028Reduced Runoff in the Upper Yangtze River Due To Comparable Contribution of Anthropogenic and Climate ChangesFeng Zeng0Qiulan He1Yao Li2Weiyu Shi3Ruowen Yang4Mingguo Ma5Guangwei Huang6Junlan Xiao7Xinyue Yang8Dongrui Di9Chongqing Jinfo Mountain Karst Ecosystem National Observation and Research Station School of Geographical Sciences Southwest University Chongqing ChinaChongqing Jinfo Mountain Karst Ecosystem National Observation and Research Station School of Geographical Sciences Southwest University Chongqing ChinaChongqing Jinfo Mountain Karst Ecosystem National Observation and Research Station School of Geographical Sciences Southwest University Chongqing ChinaChongqing Jinfo Mountain Karst Ecosystem National Observation and Research Station School of Geographical Sciences Southwest University Chongqing ChinaDepartment of Atmospheric Sciences Yunnan University Kunming ChinaChongqing Jinfo Mountain Karst Ecosystem National Observation and Research Station School of Geographical Sciences Southwest University Chongqing ChinaGraduate School of Global Environmental Studies Sophia University Tokyo JapanChongqing Jinfo Mountain Karst Ecosystem National Observation and Research Station School of Geographical Sciences Southwest University Chongqing ChinaChongqing Jinfo Mountain Karst Ecosystem National Observation and Research Station School of Geographical Sciences Southwest University Chongqing ChinaChongqing Jinfo Mountain Karst Ecosystem National Observation and Research Station School of Geographical Sciences Southwest University Chongqing ChinaAbstract The changing climate and intensifying human activities have made an impact on the hydrological processes in the upper Yangtze River (UYR), but quantifying their effects remains uncertain. This study used the Budyko framework to investigate the response of runoff (Q) to climate change and human activities during 1956–2017 and evaluate the impacts of human activities, including land use/cover change, water use, dam construction, and vegetation change, on watershed characteristic. Results show that climate change is the dominant driver of Q variations in the Wujiang River (WJR), Jialing River (JLR), and Jinsha River (JSR) watersheds, with contributions of 58.6%, 66.9%, and 67.6%, respectively. However, in Mingjiang River (MJR) and UYR watersheds, human activities contribute more to Q variations with 55.2% and 51.2%, respectively. Human activities play important roles in variation of watershed characteristics, and they can explain 22%, 26%, 36%, 25%, and 53% of the watershed character change in UYR, WJR, JLR, MJR, and JSR, respectively. This study conducts a comprehensive analysis of the causes of Q change in UYR, and provides a new perspective to explore the effects of specific human activities on watershed characteristics.https://doi.org/10.1029/2023EF004028runoffclimate changeLUCCwater usevegetation changedam construction
spellingShingle Feng Zeng
Qiulan He
Yao Li
Weiyu Shi
Ruowen Yang
Mingguo Ma
Guangwei Huang
Junlan Xiao
Xinyue Yang
Dongrui Di
Reduced Runoff in the Upper Yangtze River Due To Comparable Contribution of Anthropogenic and Climate Changes
Earth's Future
runoff
climate change
LUCC
water use
vegetation change
dam construction
title Reduced Runoff in the Upper Yangtze River Due To Comparable Contribution of Anthropogenic and Climate Changes
title_full Reduced Runoff in the Upper Yangtze River Due To Comparable Contribution of Anthropogenic and Climate Changes
title_fullStr Reduced Runoff in the Upper Yangtze River Due To Comparable Contribution of Anthropogenic and Climate Changes
title_full_unstemmed Reduced Runoff in the Upper Yangtze River Due To Comparable Contribution of Anthropogenic and Climate Changes
title_short Reduced Runoff in the Upper Yangtze River Due To Comparable Contribution of Anthropogenic and Climate Changes
title_sort reduced runoff in the upper yangtze river due to comparable contribution of anthropogenic and climate changes
topic runoff
climate change
LUCC
water use
vegetation change
dam construction
url https://doi.org/10.1029/2023EF004028
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