ABSTRACT
Land is the material basis for human survival. Land ecological conditions determine human survival and development. With the rapid development of economy, and accelerated urbanization and industrialization, the scope and strength of human activities on land use continue to expand, causing more and more environmental problems, such as land degradation, environmental pollution and ecological imbalance, etc. (Wu C.F. and Xu, B.G., 2003). With land management changed from quantity management to quantity-quality-ecology management, investigation and assessment of the land ecological status have become hot topics. Scientific assessment of land resources is fundamentally important to achieve regional ecological and economic benefits, to provide more land products and favorable ecological environment. It is also an important basis for land planning and rational use (Fu, B.J.,1990).
