基于能值——生态足迹的安康市可持续发展评价

Assessment of Sustainable Development Based on Energy Theory and Ecological Footprint ——A Case Study of Ankang

以安康市城市生态系统为对象,利用能值理论和生态足迹模型,计算和分析了安康市2004—2008年区域发展模式下区域生态足迹的需求和区域生态承载力,并进行了可持续发展评价。结果表明:安康市2004—2008年人均能值生态足迹分别为11.90、11.83、11.59、11.57、11.40hm2,人均能值生态承载力分别为4.28、4.69、4.00、4.44、4.89hm2,可持续性评价指数分别为0.74、0.72、0.74、0.72、0.70,人均能值生态足迹大于人均能值生态承载力,出现生态赤字,生态安全性较差,社会发展中生态贡献巨大,可持续发展水平不高。

Taking the municipal ecosystem of Ankang as object,by combining the energy value theory and the eco- logical footprint models together, the amounts of ecological carrying capacity and the demands of ecological foot- prints between 2004 to 2008 were calculated,and an assessment was conducted in the view of regional sustainable development. In the years of 2004 to 2008, the energy-based ecological footprints were 11.90 hm2, 11.83 hm2, 11.59 hm2 , 11.57 hm2 ,and 11.40 hm2 per capita,respectively. The energy-based ecological carrying capacities were 4.28 hm2 ,4.69 hm2 ,4.00 hm2 ,4.44 hm2 ,and 4.89 hm2 per capita,respectively. The sustainability energy indices were 0. 74,0. 72. 0. 74,0. 72, and 0.70, respectively. The energy-based ecological footprint was beyond the carrying capacity,and turned out ecological deficit, resulting in poor ecological safety, which meant the consumption of re- sources was highly beyond the supply of the resources.