River regulation and resilience: an approach for the Yangtze watershed

C. Liu; Y. Chai; B. Zhu; Y. Yang; J. Deng; Y. Hu

doi:10.2166/WS.2021.035

River regulation and resilience: an approach for the Yangtze watershed

C. Liu
, Y. Chai
, B. Zhu
, Y. Yang
, J. Deng
, Y. Hu

Earth and Climate

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

Many studies have focused on analyzing variation characteristics of the watershed resilience based on different indicators, while few efforts have been made to quantificationally evaluate contributions of climatic and anthropogenic factors to the varied resilience. In this study, we investigate changes in the seasonal runoff resilience of the entire Yangtze River basin during 1961–2014 by using a convex model and a resilience indicator (Pi). The MIKE 11HD model and the regression method were adopted to further differentiate effects of climate variations and human activities. Results show that climate variation (especially droughts and floods) and human activities exert negative and positive effects, respectively, and become primary reasons for falling and increasing trends in entire watershed resilience. These impacts grow with time under the gradually intensified climate variability and human activity.

Original language	English
Pages (from-to)	1817-1833
Number of pages	17
Journal	Water Science & Technology: Water Supply
Volume	21
Issue number	4
Early online date	2 Feb 2021
DOIs	https://doi.org/10.2166/WS.2021.035
Publication status	Published - 1 Jun 2021

Bibliographical note

Funding

This work was supported by the CRSRI Open Research Program (Nos. CKWV2018463/KY, CKWV2019727/KY and CKWV2017502/KY) and the Research Program of the Education Department of Hunan Province (No. 20B021). We also highly appreciate the valuable insights from the reviewers.

Funders	Funder number
Education Department of Hunan Province	20B021

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 13 Climate Action

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AU - Deng, J.

AU - Hu, Y.

PY - 2021/6/1

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AB - Many studies have focused on analyzing variation characteristics of the watershed resilience based on different indicators, while few efforts have been made to quantificationally evaluate contributions of climatic and anthropogenic factors to the varied resilience. In this study, we investigate changes in the seasonal runoff resilience of the entire Yangtze River basin during 1961–2014 by using a convex model and a resilience indicator (Pi). The MIKE 11HD model and the regression method were adopted to further differentiate effects of climate variations and human activities. Results show that climate variation (especially droughts and floods) and human activities exert negative and positive effects, respectively, and become primary reasons for falling and increasing trends in entire watershed resilience. These impacts grow with time under the gradually intensified climate variability and human activity.

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River regulation and resilience: an approach for the Yangtze watershed

Abstract

Bibliographical note

Funding

UN SDGs

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