基于空间技术北京市地貌类型区划研究

地貌类型区划图是区域土地利用及农业规划中重要的基础数据,而北京市现有的地貌类型区划数据存在比例尺过小、与北京市当前的土地利用图不一致等问题。针对这一问题,在收集总结研究区已有地貌区划方案的基础上,确定了北京市地貌划分的类型及划分标准。首先以研究区高精度DEM为主要数据源,同时参考研究区的地质图,利用相应的空间分析技术初步确定地貌类型区划界线。然后,利用SPOT5遥感影像和DEM生成的三维景观对地貌类型区划进行了验证和局部调整,并通过外业实地调查进行核实。最后,生成与研究区土地利用现状图在比例尺、参考坐标系等方面一致的地貌类型区划数据,为北京市土地利用规划提供了基础数据。

Research on the relief zonal approach of Beijing based on spatial technology

The relief type zonal map is the basic data for the region land use and agriculture global planning. But the existed relief zone data of Beijing is not accordance with the latest land use map, while the scale of the relief data is too small. To these questions, through collected and summarized the historical relief zonal solutions, the relief types and zonal criterion of Beijing are determined. The precision digital elevation model （DEM） generated by 1： 10000 contour of the study area is used as the main data source, while the geology map is referred to define the boundary of relief zones. Then the relief zonal data are validated and locally adiusted with the 3-dimensional relief view generated by SPOT5 remote sensing image and DEM,while the zonal data are verified with the field survey. At last, the Beijing relief zonal data which have the accordant scale and reference frame with the latest land use map of study area is presented.