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

Geography and Sustainability 2024年第4期5卷 526-537页

作者： Song Song Ziqiang Ye Zhijie Zhou Xiaowei Chuai Rui Zhou Jinwei Zou Yi Chen School of Geography and Remote Sensing Guangzhou UniversityGuangzhou 510006China The Hong Kong University of Science and Technology(Guangzhou) Guangzhou 511453China School of Geography and Ocean Science Nanjing UniversityNanjing 210023China Jiangsu Provincial Academy of Social Sciences Nanjing 210004China Bao’an Institute of Education Sciences Shenzhen 518101China Zhejiang Design Institute of Water Conservancy and Hydroelectric Power Co. Ltd.Hangzhou 310002China

The increasingly frequent storms pose significant threats to the sustainable development of coastal regions,particularly in densely populated and economically vibrant *** the dynamics and intricate mechanisms underlying runoff generation is crucial in the context of climate change and anthropogenic *** 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 temporal 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 adaptation *** 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 evapotranspiration 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 *** 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 systems into traditional flood regulation and water resource *** framework should promote interdisciplinary collaboration from an integrated perspective,to bridge the administrative and watershed boundaries,to effectively address the complex challe

关键词： Coastal Chinese Mainland Runoff production Elastic analysis Climate change anthropogenic interference

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Methodological Issues for a Landscape-Changing Analysis in Adaptive Excess Water Management

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Journal of Agricultural Science and Technology(A) 2021年第2期11卷 65-74页

作者： Dalma Varga Nora Hubayne Horvath Department of Landscape Protection and Reclamation Hungarian University of Agriculture and Life SciencesVillanyi Street 29-43Budapest 1118Hungary

Hungary is located in the deepest part of the Pannonian Basin,which is affected by *** areas are particularly vulnerable to *** natural and anthropogenic processes have contributed to the formation of these flood patches,after river regulation(decisively from the middle of 18th century)and continue to affect *** objective of this research is to reveal the processes of landscape-change in areas of waterlogging,or areas threatened by excess water inundation in order to establish methods of adaptive excess water *** analysis focuses on examining the previously prevalent land-use structure and linear infrastructure elements(green,blue infrastructures)of the past 200-250 years that can be identified using historical,military maps and aerial *** maps compare different periods of 50-60 years *** a result of this analysis,the role of watercourses in shaping landscapes and human intervention process can be monitored and supported with maps including *** processing consisted of geographic information system(GIS)methods:georeference the historical maps and digitalize the well-separable land-uses of the sample *** results confirmed the process of landscape-change and the trend of green areas:cultivated areas and the spread of *** conclusion,landscape-changing analyses of landscape-changes provide valuable data onto identifying changes in land-use,which are complemented by hydrological databases,especially those related to waterlogging areas,as they adequately support adaptive excess water management methods in areas with specific *** results show which land-uses can be considered as permanent,stable land-uses in the given sample area and broach whether changes within the green and blue infrastructure network contribute to the increase or decrease of excess water formation.

关键词： Green infrastructure landscape-changing processes excess water historical maps GIS river regulations anthropogenic interference

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