大比例尺地形图的土地利用现状信息提取

Extraction of Land Use Status Information Based on Large Scale Topographic Map

以《1∶500 1∶1 000 1∶2 000地形图图式》(GB/T20257.1-2007)标准绘制的大比例尺地形图为土地调查底图,依《土地利用现状分类》(GB/T 21010-2007)标准对地形图上的土地利用现状信息进行提取。详细探讨了从地形图上水系、居民点及设施、交通、管线、植被与土质等地物中提取的地类信息的归并情况,指出了从大比例尺地形图上提取土地利用现状信息存在的问题,为共享资源,节约社会成本,建议统一地类划定标准,用定量的数值来定义各种地类等。

With the large scale topographic map drawn according to 1∶500 1∶1 000 1∶2 000 Topographic Map Symbols（GB/T20257.1-2007） as the base map for the land survey,the land use status information was extracted from the map based on the standards in Present Status Classification of Land Utilization（GB/T 21010-2007）.This study discussed in details the information of some land types including waters,residential sites,facilities,traffic,pipeline,vegetation,soils and so on,and pointed out the problems in extracting land use status information from large scale topographic map.In order to share the resources and save social costs,the study suggested unified standards for land type classification and quantitative values for defining various land types.