南京大学学报(自然科学版) ›› 2017, Vol. 53 ›› Issue (5): 879.
卢 媛,王 栋*,刘登峰,王远坤
Lu Yuan,Wang Dong*,Liu Dengfeng,Wang Yuankun
摘要: 针对水质评价中不确定性特点,引入粗糙集和云模型理论,对我国12个代表性湖库的富营养化程度进行评价.根据既定的评价因子指标,确定相应于各富营养化等级的云模型参数,并生成各评价因子隶属于各富营养化等级的综合云模型,基于改进的粗糙集条件信息熵计算各指标的权重,构建指标体系下的改进的粗糙集-云模型.代入实测资料,计算实测水体隶属于各富营养化等级的确定度,以最大确定度作为水体的营养化级别.将该方法所得结果与单一指标法、模糊可变集法、正态云模型、Gamma-云等方法进行了对比,评价结果直观有效,验证了该方法的有效性,为水体富营养化评价提供了新思路.
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