According to niche theory,the change of Kunming(1996 ~ 2004)land-use type area were analyzed,and interactive intensity of different land use types in Kunming from 1999 to 2006 also were calculated,through land use economic niche model.

Ecological economic model is the industrialization of the principle of sustainable development, and sustainable development should be implemented in China in the 21~(st) century by establishing ecological economic model.

In the sustainable economic development in western China, what should be first done is to synthesize the ecological system and the economic system and then a mode of ecological economy should be established to promote the development of western China.