基于组合赋权的湖泊健康评价物元分析模型

湖泊生态系统的健康是人与自然和谐相处及可持续发展理念的重要体现。通过建立湖泊健康评价物元分析模型,并改进其指标权重的计算,以离差平方和准则将层次分析法、熵值法及主成分分析法3种赋权方法取得的权重结合得到最优组合赋权,应用到某地5个湖泊进行湖泊健康评价。根据当地湖泊具体情况,选取12个详细指标建立评价体系与评价标准,通过模型计算得出结果显示5个湖泊中4个湖泊评价结果为优,一个评价结果为良,湖泊总体健康状况良好。因此该模型用于湖泊健康评价是非常有效的。

Matter element analysis model of lake health evaluation based on the combination weighting method

Lake ecosystem health is the important embodiment of harmony between man and nature and the concept of sustainable development. Lake health evaluation matter-element analysis model was set up and its index weight calculation was improved by combining the analytic hierarchy process (AHP), entropy weight method and principal component analysis (PCA) method to construct the optimal combination weight method based on the principle of the sum of squared residuals. The health assessment of five lakes were evaluated using the method. 12 detailed indexes were selected to establish the evaluation system and evaluation standard according to the specific situation of the five lakes. With the calculation of the model, the results showed that, four of the five lakes were evaluated as excellent, one was good, overall level of local lakes health were fine. So the model is suitable and be regarded as an effective method for lake health evaluation.