基于生态足迹模型的石嘴山市生态经济可持续性评价

以生态足迹模型为基础,计算石嘴山市改革开放以来部分年份的生物生态足迹、生态承载力和生态压力指数,结果表明:(1)石嘴山市当前生态经济发展总体上已经呈现出较强的不可持续性,并呈恶化趋势;(2)生态足迹总供需不平衡,总供给(生态承载力)不足;(3)生态足迹供需结构性矛盾突出,耕地和牧草地生态足迹严重超过其生态承载力。石嘴山要扭转不可持续的发展态势,一方面要控制经济发展对生物性资源的过度占用,抑制生物生态足迹的过快增长;另一方面要通过优化结构、提高效率增强生态承载力,缓解生态压力。

Appraise of Eco-economic Sustainability in Shizuishan City Based on Ecological Footprint Model

This paper calculates the biological ecological footprint,ecological capacity and ecological tension index of Shizuishan City since 1978 based on ecological footprint model.The results show:(1) At present,the ecological economy development is unsustainable,and has the trend of worsening;(2) the ecological footprint is imbalance between total supply and total demand,and the total supply(ecological capacity) is insufficient;and(3) the structural contradictions of ecological footprint between supply and demand are prominent and the ecological footprints of farmland and grassland are far more than the ecological capacity.In order to reverse the unsustainable development trend,Shizuishan City,on the one hand,should control the excessive utilization of biological resources and control the excessive growth of biological ecological footprint during economic development;on the other hand,it should enhance the ecological capacity by optimizing the industrial structure and enhancing efficiency so as to alleviate the ecological tension.