2006—2014年延安市生态足迹和承载力变化分析

Analysis on Change in Ecological Footprint and Land Carrying Capacity in Yan′an City from 2006 to 2014

为了分析延安市的可持续发展状况,以2006—2014年延安市统计资料为基础,计算了延安市生态足迹、生态足迹多样性指数、生态承载力和生态盈余/赤字的变化情况,并结合万元GDP生态足迹、生态经济系统发展能力指数和生态足迹指数对延安市可持续发展能力进行了分析。结果表明:延安市生态足迹增长速度高于承载力增长速度,生态赤字不断增大;各土地类型生态足迹和生态承载力分配极不均衡,在生态足迹中化石能源用地和草地约占95%,在生态承载力中耕地和林地分别约占87%;万元GDP生态足迹逐渐减小,资源利用效率在提高,但发展对资源的消费速度仍高于资源的再生速度。该研究结果可为延安市土地规划利用和产业结构调整提供参考。

In order to analyze the sustainable development status of Yan′an City,the indexes including GDP ecological footprint,ecological footprint diversity,land carrying capacity and ecological footprint index(EFI),etc.were used to analyze the development status of Yan′an City.The results showed that ecological footprint grew faster than land carrying capacity in Yan′an City during the period from 2006 to 2014;seriously ecological deficit existed in Yan′an City;moreover,the ecological footprint and land carrying capacity both presented the low diversity and unevenly distributed;with respect to the ecological footprint,fossil land and grass land took up 95%;with respect to the ecological capacity,arable land and forest accounted for 87%;GDP ecological footprint gradually decreased,which indicated that the efficiency in resource use slowly increased from 2006 to 2014.The result of EFI showed that the badly unsustainable development existed in Yan′an City.