基于熵权物元分析模型的城市生态安全综合评价

Comprehensive evaluation of urban ecological security based on entropy-weight and matter-element analysis model

随着城市化进程的加快,人口膨胀,交通拥挤,环境破坏,大气污染,能源短缺等一系列生态问题严重制约着城市的可持续发展,影响着城市的生态安全。针对城市生态安全的问题,论文以郑州市为例,采用物元分析和熵权法,建立城市生态安全熵权物元模型,首先通过熵权法对郑州市2001-2004年的指标数据进行处理并计算出相应的权重,再通过物元分析法对郑州市2001年城市生态安全状况进行综合评价,结果表明郑州市2001年的城市生态处于较不安全状态,评价结果客观、科学,不仅为解决城市生态安全问题提供了一种有效的评价方法,而且能够为明确城市的发展状况,制定下一步发展战略提供依据。

With the acceleration of urbanization, a series of ecological problems such as population expansion, traffic congestion, environmental damage, air pollution, and energy shortage seriously restrict the sustainable development of city, and influence urban ecological security. Focused on urban ecological security problems, we took Zhengzhou as an example and adopted the matterelement analysis and entropy method to establish a model of ecological city security entropy and matterelement. First, the index data of Zhengzhou between 2001 and 2004 were processed and calculated by entropy weight method. Second, urban ecological security of Zhengzhou city in 2001 was comprehensive evaluated by matter-element analysis. The results showed that the ecological security of Zhengzhou in 2001was in unsafe condition. The evaluation results are objective and scientific, which can not only provide an efficient evaluation method for solving the urban ecological security, but also be able to understand the development of the city＇s status to provide a basis for working out the next development strategy.