粤港澳大湾区高密度城市群水土流失问题探讨  

Issues of soil and water loss in high-density urban agglomeration of the Guangdong-Hong Kong-Macao Greater Bay Area

作　　者：贾茜淳 姜学兵 黄俊 刘丙军 余顺超 Jia Xichun;Jiang Xuebing;Huang Jun;Liu Bingjun;Yu Shunchao

机构地区：[1]珠江水利委员会珠江水利科学研究院,广州510610 [2]中山大学土木工程学院,广州510275 [3]珠江水利委员会珠江流域水土保持监测中心站,广州510610

出　　处：《中国水利》2025年第2期36-41,共6页China Water Resources

基　　金：国家重点研发计划项目(2022YFF1302902);水利技术示范项目(SF-202207);人为水土流失风险预警模型研发与技术应用项目(2022YF021)。

摘　　要：随着城市化的快速发展,高密度城市水土流失问题备受关注。粤港澳大湾区属于高密度城市群,具有自然地形条件复杂、降雨侵蚀力较强和物质条件丰富等特点,为高密度城市水土流失的发生提供了丰富条件。近几年粤港澳大湾区水土流失轻度侵蚀占主导,中度和强烈侵蚀占比有所控制。分析高密度城市水土流失在土地、河网的开发和破坏,施工建设,气象因素以及多因素综合影响方面的成因,探讨其在威胁用水安全、危害水生态和水土资源、造成城市景观受损和经济损失等方面的影响和危害。针对高密度城市水土保持工作,提出加强施工场地治理、改善排水设施、改进城市规划以及结合科技创新手段等建议,旨在减少高密度城市水土流失风险,推动城市可持续发展,改善环境质量,保障生态安全。Along with rapid development and urbanization,soil and water loss in high-density cities has attracted great attention.The Guangdong Hong Kong Macao Greater Bay Area belongs to a high-density urban agglomeration,with features of complex topography,strong rainfall erosivity and abundant materials,which provide abundant conditions for soil erosion.In recent years,slight erosionis commonly existed in the area,while the proportion of moderate and severe erosion has been gradually decreased.Based on analysis of causes of erosion in the development and destruction of land and river networks and construction,as well as comprehensive impacts of meteorological and multiple factors,negative impacts and harms on water safety,water ecology and soil resources,and damages to urban landscape and economic losses were evaluated.Suggestions are made for soil and water conservation in high-density cities,including strengthening management of construction site,improving drainage system,enhancing urban planning and technical innovation,with aims of reducing risks of soil erosion,sustainable urban development,environment quality improvement and ecological security.

关 键 词：粤港澳大湾区 高密度城市 水土流失 侵蚀强度 施工建设 绿色发展 

分 类 号：S157[农业科学—土壤学]