THE COMPILATION AND DRAWING OF THE LAND RESOURCE MAP ON THE SCALE OF 1:500000 OF JILIN PROVINCE
吉林省1：50万土地资源图的编制研究

The land resource map is a most complicated map in respects of agricultural natural factors and resources. According to the author's experience in compilation and drawing, some problems of the land resource map on the scale of 1:500 000 of Jilin province are discussed in this paper.1.Basic contents of the map sheet-classification system of land resource: Five levels of land resource type are represented on the map. These five levels are land capability region, land suitablity group, land quality class, land resource limiting factors, and land resource unit. The land resource unit is an evalution object and a catographic basic unit.2.Representation method and colour design: In order to represent the five levels of land resource type mentioned above, the qualitative base method which combines colour with the code or note and the boundary line is adopted.3.Compilation method: Cartographic information (such as landsat images, topographic maps, and thematic maps, etc. ) and integra'ion with field observation and examination are used.