安徽农业科学2026，Vol.54Issue(2)：183-192,10.DOI:10.3969/j.issn.0517-6611.2026.02.033
喀斯特流域近40年不透水面变化特征及其对地表径流的影响
Characteristics of Impervious Surface Changes and Their Impact on Surface Runoff in Karst Basins over the Past 40 Years
摘要
Abstract
[Objective]To provide a scientific support for optimizing territorial space,flood risk management and agricultural security in karst mountainous areas.[Method]This study examines a typical karst watershed using remote sensing data(1985-2022)and integrates the SCS-CN hydrological model,multiple linear regression,and geostatistical methods to analyze the spatiotemporal dynamics of impervious surface ex-pansion and quantitatively simulate its effects on surface runoff and flood inundation extent over the past four decades.[Result]The results show that impervious surface area increased from 3.31 km2 to 22.05 km2,with spatially contiguous growth along the northwest-southeast axis.Surface runoff exhibited a strong positive correlation with impervious surface coverage,showing more pronounced increases under low-intensity rainfall.Flood-prone areas progressively shifted from low-lying farmland downstream to urban zones in mid-upper reaches,endangering agricultural land,urban infrastructure,and arable resources.[Conclusion]The study underscores the critical need for impervious surface scientific manage-ment in karst regions to coordinate urban development and mitigate urban flooding risks.These findings provide a scientific basis for territorial spatial planning and sustainable agricultural development in karst mountainous areas.关键词
喀斯特流域/SCS-CN水文模型/不透水面/地表径流/洪水淹没模拟Key words
Karst watershed/SCS-CN hydrological model/Impervious surface/Surface runoff/Flood inundation simulation分类
资源环境引用本文复制引用
吴建峰,姜国伟,吴嘉莉,向征,张兵..喀斯特流域近40年不透水面变化特征及其对地表径流的影响[J].安徽农业科学,2026,54(2):183-192,10.基金项目
贵州省科技支撑计划项目(黔科合支撑[2023]一般226) （黔科合支撑[2023]一般226）
贵州省高等学校遥感卫星人工智能应用工程研究中心(黔教技[2023]039号) （黔教技[2023]039号）
贵州省教育厅自然科学研究项目(青年人才)(黔教合KY字[2021]247) （青年人才）
大学生创新创业训练计划项目(202514223813). （202514223813）
