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Varying hydrological response to climate change in three neighborhood plateau lake basins: Localized climate change feature matters

•Climate change can pose sever pressure on lakes on the Yunnan–Guizhou Plateau.•Annual, seasonal, and extreme hydrological regimes varied significantly.•Climatic and watershed characteristic shaped the different responses of each lake.•Specific strategies for each plateau lake are urgently required...

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Published in:Ecological indicators 2023-03, Vol.147, p.110015, Article 110015
Main Authors: Duan, Zhongzhao, Gao, Wei, Liu, Chang'e, Du, Zhanpeng, Chang, Xuexiu
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cited_by cdi_FETCH-LOGICAL-c385t-ce3cdf8fc695811ad2772a244b4f2bd2af163f4ecfc15a613967ac0fa5cf47753
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container_title Ecological indicators
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creator Duan, Zhongzhao
Gao, Wei
Liu, Chang'e
Du, Zhanpeng
Chang, Xuexiu
description •Climate change can pose sever pressure on lakes on the Yunnan–Guizhou Plateau.•Annual, seasonal, and extreme hydrological regimes varied significantly.•Climatic and watershed characteristic shaped the different responses of each lake.•Specific strategies for each plateau lake are urgently required in the future. Climate change and its impact on plateau lakes are of wide concern in China owing to their diverse yet fragile ecosystems. The three largest and most concerning plateau lakes (Dianchi, Erhai, and Fuxian lakes) in southwestern China were selected as case studies to demonstrate their different hydrological responses attributing to the local climatic and watershed characteristics.We processed 27 climate change scenarios according to the local climate characteristics and simulated the daily runoff of each lake basin under the historical and the 27 climate change scenarios. Then we analyzed the change of mean annual and seasonal runoff, and hydrological extremes of each lake basin. The results indicate a great risk of socio-economic and ecological for these plateau lakes as climate change will significantly alter the horological regimes of each lake basin. The mean annual runoff of the three lake basins will change from–65.24 to 54.17 %, when the air temperature increases by 1–2 °C and precipitation changes from –20 to + 20 %. Climatic and topographic heterogeneities caused each lake basin responded differently to climate change. Among them, the LFB was more sensitive to climate change than the LDB and LEB. Changes in the annual and seasonal runoff for the LFB were approximately 1.5-fold higher than that of the LDB and LEB. The hydrological extremes in the LFB also had the most significant changes. To cope with future climate change, each lake requires reasonable and effective mitigation measures.
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Climate change and its impact on plateau lakes are of wide concern in China owing to their diverse yet fragile ecosystems. The three largest and most concerning plateau lakes (Dianchi, Erhai, and Fuxian lakes) in southwestern China were selected as case studies to demonstrate their different hydrological responses attributing to the local climatic and watershed characteristics.We processed 27 climate change scenarios according to the local climate characteristics and simulated the daily runoff of each lake basin under the historical and the 27 climate change scenarios. Then we analyzed the change of mean annual and seasonal runoff, and hydrological extremes of each lake basin. The results indicate a great risk of socio-economic and ecological for these plateau lakes as climate change will significantly alter the horological regimes of each lake basin. The mean annual runoff of the three lake basins will change from–65.24 to 54.17 %, when the air temperature increases by 1–2 °C and precipitation changes from –20 to + 20 %. Climatic and topographic heterogeneities caused each lake basin responded differently to climate change. Among them, the LFB was more sensitive to climate change than the LDB and LEB. Changes in the annual and seasonal runoff for the LFB were approximately 1.5-fold higher than that of the LDB and LEB. The hydrological extremes in the LFB also had the most significant changes. 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Climate change and its impact on plateau lakes are of wide concern in China owing to their diverse yet fragile ecosystems. The three largest and most concerning plateau lakes (Dianchi, Erhai, and Fuxian lakes) in southwestern China were selected as case studies to demonstrate their different hydrological responses attributing to the local climatic and watershed characteristics.We processed 27 climate change scenarios according to the local climate characteristics and simulated the daily runoff of each lake basin under the historical and the 27 climate change scenarios. Then we analyzed the change of mean annual and seasonal runoff, and hydrological extremes of each lake basin. The results indicate a great risk of socio-economic and ecological for these plateau lakes as climate change will significantly alter the horological regimes of each lake basin. The mean annual runoff of the three lake basins will change from–65.24 to 54.17 %, when the air temperature increases by 1–2 °C and precipitation changes from –20 to + 20 %. Climatic and topographic heterogeneities caused each lake basin responded differently to climate change. Among them, the LFB was more sensitive to climate change than the LDB and LEB. Changes in the annual and seasonal runoff for the LFB were approximately 1.5-fold higher than that of the LDB and LEB. The hydrological extremes in the LFB also had the most significant changes. 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Climate change and its impact on plateau lakes are of wide concern in China owing to their diverse yet fragile ecosystems. The three largest and most concerning plateau lakes (Dianchi, Erhai, and Fuxian lakes) in southwestern China were selected as case studies to demonstrate their different hydrological responses attributing to the local climatic and watershed characteristics.We processed 27 climate change scenarios according to the local climate characteristics and simulated the daily runoff of each lake basin under the historical and the 27 climate change scenarios. Then we analyzed the change of mean annual and seasonal runoff, and hydrological extremes of each lake basin. The results indicate a great risk of socio-economic and ecological for these plateau lakes as climate change will significantly alter the horological regimes of each lake basin. 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subjects air temperature
China
climate
climate change
Hydrological extremes
Hydrological regime
Lake Dianchi
Lake Erhai
Lake Fuxian
lakes
risk
runoff
socioeconomics
topography
Water resource
watersheds
title Varying hydrological response to climate change in three neighborhood plateau lake basins: Localized climate change feature matters
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