| 摘要: |
| 利用Q型聚类分析中的夹角余弦法对1984、1985年广西浅海环境调查的43个站位的底质污染物数据资料进行了聚类处理,划分出三大污染类型。其中,I△类属未污染为主的类型,类型构成比37.2%Ⅱ△类是以pb污染为主的重金属污染体系,属微污染和轻污染类型,类型构成比32.6%Ⅲ△类是以Oil、pb污染为主的轻污染和中污染类型,类型构成比占30.2%.分析表明,北部湾浅海区壤由岸到海的方向,污染类型排列是Ⅲ△、Ⅰ△、Ⅱ△,与成因分析相符.聚类结果和《简明规程》法处理结果颇为吻合. |
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| DOI： |
| 投稿时间：1989-08-31 |
| 基金项目: |
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| CLUSTER ANALYSIS OF SURFACE SEDIMENTS POLLUTION IN THE COASTAL AREAS OF BEIBU BAY |
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Ye Sen, Jiang Keli
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| (Guangxi Institute of Oceanography) |
| Abstract: |
In this paper authors handled the marine environment investigation data about bottom sediment pollution on 43 stations in the coastal areas of Beibu Bay in 1984-1985 by the included angle cosine method of Q type in cluster analysis, sediments pollution classificatioa The bottom sediments are divided into three kinds:the type I belongs in unpolluted or very little pollution, it takes 37.2%. The type Ⅱ△ is heavy-metal pollution system which takes pb-pollution as main part. It was considered as a light pollution type, taking 32.6%. The type Ⅲ△ is light-to-medium pollution in which petroleum and several heavy metals(Pb, Hg, Zn, etc) are main pollutants, taking 30.2%.
Analysis shows that the pollution-type order is Ⅲ△,Ⅰ△,Ⅱ△ away from seashore of marine area in Baibu Bay, which tallies with formation cause analysis. |
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