【摘要】 基于生态足迹的方法,利用RS与GIS技术得到1993年、2000年、2008年3个年份洞庭湖区人均生态承载力,湖区各县、市总生态承载力以及人均生态承载力,并对洞庭湖进行时间和空间的动态评价。结果表明,洞庭湖区人均生态承载力在不断下降,3个年份的人均生态承载力分别为0.435 3 gha、0.388 3 gha、0.354 8 gha;洞庭湖区的生态承载力在空间分布上不均,呈中间低、四周高的分布格局。湖区各县、市总生态承载力及人均生态承载力在空间上的分布也较不均匀,主要原因是土地利用类型及人口分布的差异。更多还原

【Abstract】 In order to make a dynamic analysis of ecological capacity(EC), to promote the sustainable development of Dongting Lake, we obtained the EC per capita, total EC and per capita EC of the every county in 1993, 2000, 2008 of Dongting Lake with the help of the spatial analysis approaches of RS and GIS based on the ecological footprint(EF), and made a study from time and space. The main conclusions showed that the ecological capacity per capita descended from 1993 to 2008. The ecological capacity of the Dongting Lake was inhomogeneous in space, middle high and low around. Because of the dif erence use of the land and people distribution, total EC and per capita EC of the every county around the Dongting Lake was also inhomogeneous.更多还原