基于DEM的小流域信息提取技术在生态治理中的应用——以天津市蓟县黄土梁子为例  

Application of DEM information extraction technology of small watersheds in ecological management——A case study in Huangtuliangzi of Jixian County,Tianjin City

作　　者：汪绍盛 笪志祥[2] 

机构地区：[1]同济大学,上海201804 [2]天津市水务局,天津300074

出　　处：《南水北调与水利科技》2014年第6期145-148,共4页South-to-North Water Transfers and Water Science & Technology

基　　金：天津市水务科技项目"生态清洁型小流域建设技术模式研究"(KY2007-12)

摘　　要：针对天津市北部山区蓟县黄土梁子小流域,通过1∶10 000地形图的等高线内插形成DEM,提取了小流域的边界、坡度、植被类型、植被盖度、土地利用现状、土壤侵蚀等信息。根据三道防线的划分原则和指标,运用GIS的空间分析和空间叠加方法,结合现场调查,确定了小流域的生态治理范围,并进行了小流域治理措施的合理配置。将DEM信息提取运用于小流域生态治理,为水土保持治理措施与成效分析以及水文特征研究提供了成熟的技术体系。Through the interpolation method of the elevation contours in the 1∶10 000 topographic map to form the DEM,the boundary,slope,vegetation type,vegetation coverage,land use,and soil erosion information of the small watershed in Huangtuliangzi of Jinxian County located in the northern mountain area of Tianjin were extracted.According to the division principle and index for the three lines of defense,the spatial analysis and spatial overlay methods in GIS and field investigation were used to determine the scope of ecological management in the small watershed and the reasonable allocation of management measures.The research applies DEM information extraction to the ecological management of small watersheds,which can provide a mature technical system for the management and research of soil and water conservation,effect analysis,and hydrologic characteristics.

关 键 词：DEM 小流域 生态治理 蓟县 

分 类 号：X11[环境科学与工程—环境科学]