Abstract:

The historical experience of Great West Development was briefly reviewed in this paper.Expatiation from theoretical and practical significances has been made on some basic principles that sustainable development should follow:harmonious development of human and nature,correspondence between the orientation of regional construction and gradients of environmental characteristics, and moderate development.The boundary of vegetation development was analyzed from tiers of need and possibility and methods and evidence for boundary definition were demonstrated with examples.Existing problems and solutions were pointed out from three aspects of the selection of water-saving plant species in vegetation construction,the rationality of community structure,and the Natural Forests Conservation Project and rational cutting.

Key words: Great West Region, Human and nature harmonious development, Environment carrying capacity, Moderate development, Boundary of vegetation development, Attach great importance to science and technology