吉林省1:50万土地资源图的编制研究

本文研究了吉林省1:50万土地资源图的分类系统原则、依据、标准或指标体系,以及制图方法、颜色设计等制图理论和技术问题,对编制各类土地资源图提供了有力的借鉴。

THE COMPILATION AND DRAWING OF THE LAND RESOURCE MAP ON THE SCALE OF 1:500000 OF JILIN PROVINCE

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.