%0 Journal Article
%T REGIONAL RIVER WATER QUALITY FUZZY CLUSTER ANALYSIS<br>区域河流水质的模糊聚类分析
%A Tang Yijian
%A <br>唐以剑
%J 地理学报
%D 1986
%I 
%X Begional river water quality is a comprehensive reflection of environmental characteristics and human socio-economic activities. Though it is very complicated and quite fuzzy, yet its space distribution and composition obey some rules. In this paper, fuzzy cluster analysis is used to distinguish river water quality in Beijing-Tianjin-Tangshan area. Then a dynamic fuzzy cluster tree was drawn up, by fuzzy matrix multiple calculation. After determining a proper threshold, i.e. value \, according to actual condition, an objective classification of river water quality was obtained. The result was compared with those obtained by systematic classification, the former reveals interdependency between different environmental factors.
%K : Beijing-Tianjin-Tanshan
%K Comprehensive assessment
%K Water qua-lity classification
%K Fuzzy cluster<br>京津唐
%K 综合评价
%K 水质分析
%K 模糊聚类
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=869B153A4C6B5B85&jid=F7B5B947C24B9D649491012214E4BEF4&aid=43239833D9043065&yid=4E65715CCF57055A&iid=38B194292C032A66&journal_id=0375-5444&journal_name=地理学报&referenced_num=1&reference_num=0