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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 digital environment model for the quality assessment of the ecological environment of China’s land resources, a comprehensive assessment of the ecological environment of China’s land resources was generated. The composition and distribution of the eco-environmental grade areas of the land resources in China were analyzed. The ecological quality of the land resources in China The good areas are all distributed in the southeast coast and the Sichuan Basin. The most suitable land for human living in the ecological environment accounts for only 1/3 of the total land resources of our country. One third of the land resource area has provided more than 80% of the population in China