城市环境风险程度排序的模糊分析方法

Fuzzy analysis of urban environment risk sequence

首先,强调了加强我国城市环境风险程度排序的重要性,然后将城市环境风险系统分解为大气污染环境风险等5个子系统。在建立包含14个城市环境风险因素评价集的基础上,运用模糊集贴近度理论分别构建了城市风险程度排序中“最优序城市”、“中序城市”、“最劣序城市”3个数学模型,这将有利于防范城市环境风险,提高我国城市环境风险管理科学化水平。

This paper discusses the importance of risk sequence of urban environment ,then divides the urban environment system into five subsystems. Based on establishment of urban environment risk factors assessment set for 14 cities in China, three methematical models for ＂optimal sequence city＂ ＂medium sequency city＂ and ＂worst sequence city＂ of urban risk degree sequence are constructed using approximate degree theory of fuzzy set. The construction of the models is beneficial to guard against urban environment risk and raise of science level of urban environment risk management in China.