关键词: 土地资源图, 土地资源单元, 编制方法, 颜色设计

Abstract: 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.

Key words: the land resource map, the land resource unit, compilation method, colour design.