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湖泊富营养化的评价 ,即确定水体的状态属性 ,实际上是一个将定性问题定量化的多变量的综合决策过程 ,因此 ,对湖泊的富营养化程度进行评价应以综合评价为主 .在综述国内外若干综合评价方法的基础上 ,指出营养状态指数 (TSI)法应可作为湖泊富营养化评价的主要方法 ,因其可对湖泊的营养状态进行连续的数值化分级 ,从而为富营养化机理的定量研究提供坚实基础 .采用层次分析 (AHP)法确定综合评价指标中的权重分配 ,构建一综合评价模型 :TSI =W (Chla)×TSI(Chla) +W (Sd)×TSI(Sd) +W (TP)×TSI(TP)或TSIM=W (Chla)×TSIM(Chla) +W (Sd)×TSIM(Sd) +W (TP)×TSIM(TP) .此外 ,文中简要讨论了综合评价与其他统计方法如聚类分析的关系 .
The assessment of lake eutrophication, that is, the determination of the state attributes of the water body, is actually a multivariate integrated decision-making process that quantifies the qualitative problems. Therefore, the evaluation of the lake eutrophication should be based on the comprehensive evaluation. Based on the review of several comprehensive evaluation methods both at home and abroad, it is pointed out that the TSI method should be the main method to evaluate the eutrophication of lakes because of the continuous numerical classification of the nutritional status of lakes, (AHP) method to determine the weight distribution in the comprehensive evaluation index and construct a comprehensive evaluation model: TSI = W (Chla) × TSI (Chla) + W (Sd) × TSI ( (Sd) + W (TP) × TSI (TP) or TSIM = W (Chla) × TSIM (Chla) + W (Sd) × TSIM (Sd) + W (TP) × TSIM (TP) In addition, The relationship between comprehensive evaluation and other statistical methods such as cluster analysis.