秦淮河流域河网特征提取  

Extraction of Characteristics of River Networks in Qinhuai River Basin

作　　者：李崇洁 芮菡艺[2] 

机构地区：[1]广西地震局宣传应急指挥中心,广西南宁531002 [2]南京大学地理与海洋科学学院,江苏南京210093

出　　处：《水电能源科学》2012年第2期60-62,共3页Water Resources and Power

摘　　要：以秦淮河流域为例,阐述了Arc Hydro Tools提取流域河网的步骤和方法,分析了有(无)河网辅助条件下提取数字河网的效果,并探讨了利用Arc Hydro Tools提取河网水系的特征,提出了基于ArcGIS Hydrolo-gy模块直接处理DEM数据的改进方法。结果表明,该方法有效提取了研究区域内的河网特征,与实际流域边界基本吻合。On the basis of terrain data in the Qinhuai River Basin,the methods and procedures of river networks extraction with Arc Hydro Tools are analyzed in this paper.The extraction of stream networks with river vector data is in contrast to the stream extraction without reference data.Based on digital elevation model（DEM） data,the improved stream networks extraction method with the ArcGIS Hydrology module is proposed.The results show that the proposed method is effective to extract the characteristics of the Qinhuai River Basin,and the extracted Basin boundary is basically consistent with the actual basin boundary.

关 键 词：秦淮河流域 河网水系特征 BURN-IN ARC HYDRO TOOLS 城镇化 

分 类 号：TV212.51[水利工程—水文学及水资源] P333[天文地球—水文科学]