基于用数字环境模型对中国土地资源生态环境的质量评价,生成了中国土地资源生态环境综合评价图,分析了中国土地资源生态环境等级面积构成及分布状况,得出了中国土地资源生态环境质量最好的地区全部分布在东南沿海和四川盆地区,生态环境最适合人类生存的土地资源仅占我国土地资源总面积的１／３弱,１／３的土地资源面积养活了我国８０％以上的人口

Based on the evaluation the eco environmental quality of Chinas land resources with Digital Environmental Model(DEM), the comprehensive evaluation map of the eco environmental quality of Chinas land resources was generated, and the degree area constitution and distribution conditions of the eco environmental quality of Chinas land resources were analyzed . The conclusions are that the land resources with best eco environmental quality are distributed in southeast coastal area of China and Sichuan Basin, and the land resources with eco environment most suitable for human survival only account for less than one third of the total land area in China, or more than 80% population of Chinas population was supported by only one third of her land resources.