The Research of Chinese Land use/Land cover Present Situations
基于遥感和GIS的中国土地利用/土地覆盖的现状研究

Based on the used degree index of land resources and NDVI (Normalized Difference Vegetation Index), the present situations of Chinese land use/land cover were analyzed with modeling methods. The conclusions are that the Chinese present la nd cover situation reflects the development and the used level of the Chinese l and used degree index value 202. From the limited value 400 of land used degree index, Chinese land resources have reached the half of its used limited value; i n the eastern China, the land is mainly covered with cultivated land type and th e degree of land use is high; in the western China, the land is mainly covered with unused land type and the degree of land use is low. The relations exist be tween the distribution of Chinese NDVI and the distribution of Chinese vegetatio n types. The distribution of Chinese NDVI is a reflection of the distributive co ndition of Chinese precipitation and temperature. The areas covered with agricul tural vegetation type are almostly situated in the eastern China, and the value of land used degree index is high in this area.