黄土丘陵沟壑区地貌与生态恢复措施关系的研究  

Study on the Relationship Between the Loess Hilly-gully Region Landscape and Ecological Recovery Measures

作　　者：何文秀[1] 石云[1,2] 马超[1] 

机构地区：[1]宁夏大学资源环境学院,银川750021 [2]宁夏大学农学院,银川750021

出　　处：《湖北农业科学》2016年第17期4427-4432,共6页Hubei Agricultural Sciences

基　　金：国家自然科学基金项目(41161081)

摘　　要：以黄土丘陵沟壑区第二副区的彭阳县为研究区,以1∶50 000比例尺的数字高程模型(DEM)、2014年资源三号高清遥感影像数据为数据源,采用GIS空间分析方法提取正负地形、剖面曲率、坡度和地势起伏度、地貌类型,结合研究区的实际情况自动提取划分梁峁顶、梁峁坡、沟坡、沟底和沟谷塬区5类地貌部位。结合资源三号高分影像等数据对自动提取的地貌类型进行修正,将自动提取的地貌部位进行实地验证,分析研究区地貌部位及景观格局与生态恢复措施之间的关系。结果表明,运用DEM地形分析方法可以自动提取彭阳县的梁峁顶、梁峁坡、沟坡、沟底、沟谷塬区等地貌部位;彭阳县5类地貌部位的面积大小为梁峁顶>梁峁坡>沟坡>沟底>沟谷塬区,地貌类型面积以梁峁顶和梁峁坡为主;不同地貌部位生态恢复措施景观配置不同,依据自动提取的研究区地貌数据,继续遵循因地制宜、因害设防的原则,合理布设生态恢复措施。Taking the second deputy of hilly-gully region landscape in Pengyang county as the study area,taking the 1∶50 000 scale digital elevation model（DEM） data, the remote sensing image data of resources satellite three in 2014 as a data source,the topography positions unit as Liang Maoding, Liang Maopo,gully,ditch sole and valley plateau area were extracted using the GIS spatial analysis methods containing clustering,polymerization,information combination and DEM data mining methods. The relationship between the sampling point topography positions and the topography positions were analysed automatically combineding the different landform parts with the actual ecological restoration measures. The results showed that Liang Maoding,Liang Mao,Gully,Ditch sole and Valley plateau were automatically extracted by DEM terrain analysis method.The size of five kinds topography positions were Liang Maoding〉Liang Maopo〉Gully〉Ditch sole〉Valley plateau area. The topography positions showed that Liang Maoding and Liang Maopo are the main in Pengyang county. Different landforms landscape configuration needs different ecological restoration measures. Sequentially following the principles of suiting measures to local conditions and setting up defences due to hazard,on the basis of automatic extraction of terrain data in the study area,design ecological restoration measures rationally.

关 键 词：DEM 数字地形分析 黄土丘陵沟壑区 彭阳县 地貌部位 

分 类 号：TP75[自动化与计算机技术—检测技术与自动化装置]