基于“省公顷”生态足迹模型的酒泉市耕地资源可持续性评价

Sustainable assessment of Jiuquan cultivated land resources based on sub-national hectare ecological footprint model

针对酒泉市地处西北干旱区的实际,运用"省公顷"生态足迹模型,重新明确了均衡因子和产量因子在小区域范围内的含义和计算方法,对2004—2008年酒泉市耕地资源的生态足迹、生态承载力和生态可持续指数进行了计算。结果表明:目前酒泉市耕地资源处于不可持续状态;近年来酒泉市耕地资源的可持续水平在波动中呈下降的趋势。最后提出了酒泉市耕地资源可持续方向发展的对策。

Based on the fact that Jiuquan city located at the northwest arid area of China,this paper applied ecological footprint model based on sub-national hectare,redefined the connotation and calculation of equivalence factor and yield factor in a small area,then the ecological footprint and the ecological carrying capacity and the ecological sustainability index of Jiuquan cultivated land resources between 2004 and 2008 was calculated.The result showed that cultivated land resources of Jiuquan city was unsustainable at present,and its sustainable level presents downward trend with fluctuation in recent years.At last,some countermeasures were proposed to realize the sustainable development of Jiuquan cultivated land resources.