模糊数运算法用于湖泊营养类别评判  

APPLICATI0N OF FUZZY NUMBER OPERATION TO IDENTIFYING TROPHIC TYPE OF LAKE

作　　者：李祚泳[1] 邓新民[1] 张辉军[1] 熊效振[2] 

机构地区：[1]成都气象学院探测系 [2]中国科学院大气物理所

出　　处：《重庆环境科学》1990年第5期28-32,共5页Chongqing Environmental Science

摘　　要：本文提出了应用模糊数运算判别湖泊营养状态的类型。将单参数对营养类别的分布用一个模糊数表示,并运用模糊数运算法,给出全部参数对所有营养类别分布加以表示。最后选用一个适当阈值λ寸分布进行截取,就可作出湖泊属于某一营养类别的评判。本方法应用于16个湖泊的营养类别评判,结果与用评分法评判基本一致。In this paper, fuzzy number operation was used in identifying trophic type of lake. Based on the fuzziness of trophic state and the classified standard a- mong the trophic states, the distribution of trophic classes relating to single parameter can be described by a fuzzy number. The distribution of trophic classes relating to all parameters can be derived from fuzzy number operation Finally, selecting suit- able threshold(λ), the identification of trophic type of lake will be made. This me- thod was applied to identifying trophic types of 16 lakes and the results coincided wi- th that of statistical method.

关 键 词：湖泊 营养类别 评判 模糊数运算法 

分 类 号：X832.03[环境科学与工程—环境工程]