关键词: 生物土壤结皮, 温室气体, 人工固沙, 生态恢复, 演替〓沙坡头

Abstract: Through the analysis of the developing course of our country's environment protection system and law system,we insist that the restoration of ecological environment in Western China is a course,which is closely related to natural conditions,social environment,and engineering, and technological system.The system innovation plays a more extensive and positive role in this process.In this paper the measures and systems of the ecological environment restoration in the west of China are considered.

Key words: biological soil crust, greenhouse gases, artificial sand-fixing, ecological recovery, succession, Shapotou area.