Amplifying Flood Risk Across the Lower Yellow River Basin, China, Under Shared Socioeconomic Pathways

The ecological conservation and high-quality development of the Yellow River basin (YRB) has been adopted as a major national strategy of China. However, the YRB is still afflicted by floods. Here, we proposed a flood risk indicator using direct economic loss degree and improved the SNRD (station-ba...

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Main Authors: Jinbo Song, Qiang Zhang, Wenhuan Wu, Vijay P. Singh, Zexi Shen, Gang Wang, Chong-Yu Xu
Format: Article
Language:English
Published: Frontiers Media S.A. 2022-05-01
Series:Frontiers in Earth Science
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/feart.2022.900866/full
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author Jinbo Song
Jinbo Song
Qiang Zhang
Qiang Zhang
Wenhuan Wu
Wenhuan Wu
Vijay P. Singh
Vijay P. Singh
Vijay P. Singh
Zexi Shen
Zexi Shen
Gang Wang
Gang Wang
Chong-Yu Xu
author_facet Jinbo Song
Jinbo Song
Qiang Zhang
Qiang Zhang
Wenhuan Wu
Wenhuan Wu
Vijay P. Singh
Vijay P. Singh
Vijay P. Singh
Zexi Shen
Zexi Shen
Gang Wang
Gang Wang
Chong-Yu Xu
author_sort Jinbo Song
collection DOAJ
description The ecological conservation and high-quality development of the Yellow River basin (YRB) has been adopted as a major national strategy of China. However, the YRB is still afflicted by floods. Here, we proposed a flood risk indicator using direct economic loss degree and improved the SNRD (station-based nonlinear regression downscaling model) and simulated extreme precipitation processes. The correlation coefficient of downscaled average extreme precipitation of CMORPH and CMIP6 data reached 0.817. Moreover, we evaluated flood risk and flood hazard across the YRB based on the sixth phase Coupled Model Intercomparison Project (CMIP6) data under different SSPs. Under SSP126, SSP245, and SSP585 scenarios, the areas with increasing flood hazards during 2015–2045 accounted for 65.2, 69.0, and 64.5% of the entire YRB. In the spatial pattern, flood hazards decreased from southeastern to northwestern parts of the YRB. When compared with the spatial pattern of flood risks in 2015, regions with high flood risks expanded slightly and regions with low flood risks shrunk slightly. Higher flood risks can be observed in the middle and lower YRB and particularly in the lower YRB. These findings are critical for the mitigation of flood risk across the YRB under warming climate.
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spelling doaj.art-c7902ff2ae254bfa82f4942a9e5ffddd2022-12-22T03:25:50ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632022-05-011010.3389/feart.2022.900866900866Amplifying Flood Risk Across the Lower Yellow River Basin, China, Under Shared Socioeconomic PathwaysJinbo Song0Jinbo Song1Qiang Zhang2Qiang Zhang3Wenhuan Wu4Wenhuan Wu5Vijay P. Singh6Vijay P. Singh7Vijay P. Singh8Zexi Shen9Zexi Shen10Gang Wang11Gang Wang12Chong-Yu Xu13State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, ChinaFaculty of Geographical Science, Beijing Normal University, Beijing, ChinaState Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, ChinaFaculty of Geographical Science, Beijing Normal University, Beijing, ChinaState Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, ChinaFaculty of Geographical Science, Beijing Normal University, Beijing, ChinaDepartment of Biological and Agricultural Engineering, Texas A&M University, College Station, TX, United StatesZachry Department of Civil and Environmental Engineering, Texas A&M University, College Station, TX, United StatesNational Water and Energy Center, UAE University, Al Ain, United Arab EmiratesState Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, ChinaFaculty of Geographical Science, Beijing Normal University, Beijing, ChinaState Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, ChinaFaculty of Geographical Science, Beijing Normal University, Beijing, ChinaDepartment of Geosciences and Hydrology, University of Oslo, Oslo, NorwayThe ecological conservation and high-quality development of the Yellow River basin (YRB) has been adopted as a major national strategy of China. However, the YRB is still afflicted by floods. Here, we proposed a flood risk indicator using direct economic loss degree and improved the SNRD (station-based nonlinear regression downscaling model) and simulated extreme precipitation processes. The correlation coefficient of downscaled average extreme precipitation of CMORPH and CMIP6 data reached 0.817. Moreover, we evaluated flood risk and flood hazard across the YRB based on the sixth phase Coupled Model Intercomparison Project (CMIP6) data under different SSPs. Under SSP126, SSP245, and SSP585 scenarios, the areas with increasing flood hazards during 2015–2045 accounted for 65.2, 69.0, and 64.5% of the entire YRB. In the spatial pattern, flood hazards decreased from southeastern to northwestern parts of the YRB. When compared with the spatial pattern of flood risks in 2015, regions with high flood risks expanded slightly and regions with low flood risks shrunk slightly. Higher flood risks can be observed in the middle and lower YRB and particularly in the lower YRB. These findings are critical for the mitigation of flood risk across the YRB under warming climate.https://www.frontiersin.org/articles/10.3389/feart.2022.900866/fullflood riskrisk evaluationCMIP6shared socioeconomic pathwaysYellow River basin
spellingShingle Jinbo Song
Jinbo Song
Qiang Zhang
Qiang Zhang
Wenhuan Wu
Wenhuan Wu
Vijay P. Singh
Vijay P. Singh
Vijay P. Singh
Zexi Shen
Zexi Shen
Gang Wang
Gang Wang
Chong-Yu Xu
Amplifying Flood Risk Across the Lower Yellow River Basin, China, Under Shared Socioeconomic Pathways
Frontiers in Earth Science
flood risk
risk evaluation
CMIP6
shared socioeconomic pathways
Yellow River basin
title Amplifying Flood Risk Across the Lower Yellow River Basin, China, Under Shared Socioeconomic Pathways
title_full Amplifying Flood Risk Across the Lower Yellow River Basin, China, Under Shared Socioeconomic Pathways
title_fullStr Amplifying Flood Risk Across the Lower Yellow River Basin, China, Under Shared Socioeconomic Pathways
title_full_unstemmed Amplifying Flood Risk Across the Lower Yellow River Basin, China, Under Shared Socioeconomic Pathways
title_short Amplifying Flood Risk Across the Lower Yellow River Basin, China, Under Shared Socioeconomic Pathways
title_sort amplifying flood risk across the lower yellow river basin china under shared socioeconomic pathways
topic flood risk
risk evaluation
CMIP6
shared socioeconomic pathways
Yellow River basin
url https://www.frontiersin.org/articles/10.3389/feart.2022.900866/full
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