机构地区： 吉林大学环境与资源学院
出 处： 《干旱区研究》 2005年第4期553-558,共6页
摘 要： 以松嫩平原西部为例,运用生态足迹模型,对1989年和2001年的可持续状况进行了量化研究和对比分析。采用相对指标法,首次对研究区10个县、市的可持续性进行分级。结果表明:12 a中,松嫩平原西部整体的可持续性呈下降趋势。在分析生态赤字存在的原因基础上,提出了实现生态供给平衡的途径。 The study area, the west Songnen Plain （43°59＇～46°18＇N, 121°38＇～126°11＇E, 150～200 m a. s. l.）, is located in a transitional zone of warm-temperate semihumid and semiarid regions, and its total area is 47 621 km^2. The study area is a farming-pasturing ecotone, where the ecological environment is vulnerable, and the contradiction of human-land relations is serious. Some ecological regeneration problems, such as the sharp reduction of area of grasslands, land degradation and desertification, soil alkalization, shortage of water resources and deterioration of water quality, become more and more serious. Since recent decades, the irrational and excessive exploitation of natural resources has resulted in the more serious degeneration of the vulnerable ecological environment and the reduction of soil fertility. The regeneration of ecological environment has seriously restricted the sustainable development of society and economy. Quantitative evaluation of sustainable development is a hot topic in the world, and the method of ecological footprints is an effective mean in quantitatively researching sustainable development. In this paper, a quantitative case study on sustainable development in the west Songnen Plain in 1989 and 2001 is carried out based on the ecological footprint model. The relative index method is firstly used to grade the sustainability in 10 counties and cities in the west Songnen Plain. The result shows that the sustainability in the west Songnen Plain was reduced in 2001 than that in 1989. The calculated results are similar to other environmental evaluation results and accord with the practical situation, which reveals that the method of ecological footprints is the effective means in quantitatively researching sustainable development.
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