生态-水网系统关键影响因子识别研究

针对单独使用层次分析法易出现主观判断的局限性,以及使用熵值法易出现偏离真实的可能性,提出了联合层次分析法和熵值法两种方法构建一种新的评价模型,来对生态-水网复合系统的指标权重进行量化。即在层次分析法计算权重后,使用熵值法对指标权重进行计算,然后根据二者的综合函数确定权重。与单独采用层次分析法和熵值法相比,层次分析法和熵值法结合对生态-水网复合系统指标进行了主观与客观相结合的量化,降低了数据在分类和识别中的识误率和拒识率,使结果更具客观性和合理性。并利用河北省的生态、水网数据,分析了2008-2012年生态、水网两个子系统,计算得出了生态-水网复合系统中十个指标的权重,为复合系统的耦合模拟乃至评价管理奠定了基础。

AHP-entropy value method of indexes quantification and its application in eco-water network composite system

In simulation or evaluation of composite systems, the choice and quantification of indexes are key contents. A new evaluation model was put forward to quantify the indexes weights of Eco-water network composite system by uniting AHP and entropy value method,the model avoided the subjective in using analytic hierarchy process (AHP) and partial in using entropy value method separately. That is the indexes weights were calculated by AHP and entropy value method respectively firstly, and then the weights were determined by according to comprehensive function. The alliance of AHP and entropy value method can be regarded as the combination of subjective and objective method. It reduced the error rate and false reject rate in the process of data classification and identification, compared with using AHP and entropy value method individually, the alliance method makes the results more objective and reasonable in the index quantification of Eco-water network composite system. Based on the ecology, water network data from 2008 to 2012 in Hebei province, the two sub-systems including ecology and water network system were analyzed, and the ten indexes weights of the composite system were calculated. It lays the foundation for coupling simulation, evaluation and management of the composite system.