| 摘要: |
| 以总硬度、pH、溶氧、化学耗氧、总氮、总磷、浮游植物、透明度8项指标为依据,参照现行湖泊营养类型划分标准,应用fuzzy聚类分析方法对我国42个主要湖泊聚类并划分其营养类型,同时对各类型的指标特征进行了分析。结果表明:在相似水平λ=0.69下,42个湖泊共聚为13类。其中,中、富营养型有较强的相似性,其差异显著的指标为总氮、总磷和化学耗氧量;贫营养型湖泊相似性差,其共同特征是指标中一项或数项显著异于一般营养范围。聚类结果与传统分类基本吻合。 |
| 关键词: fuzzy聚类分析 湖泊营养类型 |
| DOI：10.18307/1992.0211 |
| 分类号: |
| 基金项目: |
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| Fuzzy cluster analysis of lake trophic types |
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Cheng Changqi, Xie Hongzhen
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Southwest Agricultural University Chongqing 630716
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| Abstract: |
| By using fuzzy cluster analysis on 8 parameters including total-hardness, pH, dissolved-oxygen, COD,total-nitrogen,total-phsphorus,phytoplankton and diaphaneity of 42 main lakes in China,a trophic classification method is discussed for comparison with other classification methods in present publications.As the similary value is "λ=0.690",42 lakes can be classified into 13 trophic types,among which parameters belonging to mesotrophic lakes are of significant similarity,as well as eutrophic ones,except total-nitrogen.totaJ-phosphorus and COD with remarkable differences, however, among which parameters belonging to oligotrophic lakes aren't of significant similarity,and a few parameters differ from the common parameter value, The results of fuzzy cluster analysis of lake trophic types are similar to those of the traditional methods, showing that fuzzy cluster analysis may be used in classification of lake trophic types. |
| Key words: fuzzy cluster analysis trophic types of lake |
