地理学报 ›› 1986, Vol. 41 ›› Issue (3): 233-240.doi: 10.11821/xb198603005

• 论文 • 上一篇    下一篇

区域河流水质的模糊聚类分析

唐以剑   

  1. 中国科学院地理研究所
  • 出版日期:1986-07-15 发布日期:1986-07-15

REGIONAL RIVER WATER QUALITY FUZZY CLUSTER ANALYSIS

Tang Yijian   

  1. Institute of Geography, Academia Sinica
  • Online:1986-07-15 Published:1986-07-15

摘要: 水作为地表物质迁移的一种溶剂与媒介,尤如人体的“血液”一样,穿行于岩石、土壤与各种生物体之间。一个特定区域范围内的河流水质,不仅受自然因素的控制,而且也受人类社会经济活动的影响。

关键词: 京津唐, 综合评价, 水质分析, 模糊聚类

Abstract: 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 λ, 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.

Key words: Beijing-Tianjin-Tanshan, Comprehensive assessment, Water quality classification, Fuzzy cluster