熵视角下的矿业城市生态可持续

矿业城市是生态可持续研究的典型区域,本文以典型矿业城市河北省武安市为例,对武安市2005~2013年的生态足迹进行测算,结合信息熵的研究理论,构建矿业城市生态系统可持续发展评价模型,研究结果显示:1武安市面临的生态赤字问题严重,人均生态赤字由2005年的8.713hm2/人增加至2009年的10.322hm2/人,而后逐渐减小,2013年为8.847hm2/人;2熵视角下的生态系统的健康性与活力性呈良性发展;3经济发展对生态环境的压力逐渐减小,经济生态成本降低,整体朝向可持续方向变化。该研究分析矿业城市发展与对自然生态的需求,可以为我国矿业城市土地利用变化机理研究和生态可持续性评价提供一定依据。

Ecological sustainability in a mining city from entropic perspective

Mining cities are very suitable for investigation of ecological sustainability, and their land use changes are also an important research content. In this study, Wu"an City in Hebei Province, a typical mining city, was selected. Based on ecological footprint and information entropy, an urban ecosystem sustainability evaluation model for Wu"an was established. Then a quadrant-based polygon method was used to analyze the specific trends of evaluation indices in Wu"an. Results show that in recent 10 years (1) Wu"an was faced with severe ecological deficit, but the ecosystem grew to the healthy and reactive state, The per capita ecological deficit increased from 8.713 hm₂/ in 2009 to 10.322 hm₂/ in 2005, and then decreased gradually, and was 8.847 hm₂/ in 2013.. (2) The stress on the eco-environment imposed by economic growth was gradually weakened. (3) The economic and ecological costs were reduced, and the overall eco-environment grew to the sustainable state. The demand for natural ecology by urban development was analyzed by correlating the growth of a mining city with quantification of ecological status. This study provides some guidance for evaluating the mechanism and ecological sustainability of land use changes in Chinese mining cities.