河西走廊生态脆弱性评价及其恢复与重建

Study on the Vulnerability Assessment,Restoration and Regeneration of the Ecology in the Hexi Corridor

河西走廊是西部大开发的重点建设区域之一 ,其良好的生态环境质量是实现区域经济社会持续发展的重要保证。本文在分析河西走廊主要生态环境问题的基础上 ,建立了生态脆弱性评价的相关指标体系 ,对全区 19个县市进行了生态脆弱的量化评价 。

The Hexi Corridor means the region of Gansu Province to the west of Yellow River, it includes the Wuwei, Zhangye and Jiuquan prefectures and the Jinchang and Jiayuguan cities in prefecture level, and has an area of 2.15×10 5 km 2. The corridor is a region where the economy is relatively developed, the population density is high, and the oases are distributed, it is the main pass of the ancient Silk Road and is now the relatively independent economic region in grade B of Gansu Province. However, some ecological environment problems, such as the land desertification, soil salinization or alkalization, extinction of some species of plants and animals and reduction of water resources, have become as the main restrictive factors for the regional economic development along with the population growth and the economic development. Therefore, it has a very important theoretical and practical significance to quantitatively assess the ecological environment of all the counties and cities so as to provide the scientific basis for the policy making of the regional economic development and the ecological restoration and regeneration. In this paper, the quantitative assessment on the ecological vulnerability of 19 counties and cities is carried out, and some measures are put forward for the ecological restoration and regeneration.