Impacts of climate change and land cover factor on runoff in the Coastal Chinese Mainland region

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外文摘要：The increasingly frequent storms pose significant threats to the sustainable development of coastal regions,par-ticularly in densely populated and economically vibrant areas.Comprehending the dynamics and intricate mech-anisms underlying runoff generation is crucial in the context of climate change and anthropogenic interference.Based on hydro-meteorological and land-use data from 1980 to 2018,this study investigates the runoff variation and its driving factors in the Coastal Chinese Mainland(CCM).The aims of this study are to reveal the tempo-ral and spatial trends of runoff yield,to clarify the sensitivity of runoff in coastal cities to the integrated and individual parameters of climate change and anthropogenic interference,including precipitation(P),potential evapotranspiration(E0),and land cover factor(n),and to support the establishment of spatially tailored adap-tation strategies.The results show that:(1)runoff has generally increased over the study period,particularly in regions such as the Yangtze River Delta,Shandong,and Guangxi,while it has decreased in western Liaoning and eastern Guangdong;(2)in the northern CCM with larger aridity index,the land cover factor plays a dominant role in runoff production,while in the wetter southern CCM,precipitation is more influential,and potential evap-otranspiration mainly hinders runoff generation all over CCM;(3)urban expansion tends to negatively impact n,while the loss of grasslands and shrinkage of croplands tend to undermine the value of n.To facilitate the achievement of sustainable development goals in the CCM,it is imperative to introduce a more comprehensive and theoretical framework that encompasses the natural,technical,and social dimensions of human-water sys-tems into traditional flood regulation and water resource management.This framework should promote interdis-ciplinary collaboration from an integrated perspective,to bridge the administrative and watershed boundaries,to effectively address the complex challenges posed by climate change and anthropogenic activities on runoff and water resources in coastal regions,and to enhance the realization of local sustainable development goals(UN SDGs).

外文关键词：

Coastal Chinese MainlandRunoff productionElastic analysisClimate changeAnthropogenic interference

作者：

Song Song、Ziqiang Ye、Zhijie Zhou、Xiaowei Chuai、Rui Zhou、Jinwei Zou、Yi Chen

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作者单位：

School of Geography and Remote Sensing,Guangzhou University,Guangzhou 510006,China

The Hong Kong University of Science and Technology(Guangzhou),Guangzhou 511453,China

School of Geography and Ocean Science,Nanjing University,Nanjing 210023,China

Jiangsu Provincial Academy of Social Sciences,Nanjing 210004,China

Bao'an Institute of Education Sciences,Shenzhen 518101,China

Zhejiang Design Institute of Water Conservancy and Hydroelectric Power Co.,Ltd,Hangzhou 310002,China

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出版年：

2024

DOI：

10.1016/j.geosus.2024.04.003

地理学与可持续性(英文)

ISSN：

年,卷(期)：2024.5(4)