熵权-双基点法在地表水水质变化评价中的应用

摘要

How to evaluate the water quality of surface water is increasingly becoming a hot research topic. Based on indexes system of water quality evaluation,combining the actual situation of evaluation area and selec-ting representative water quality evaluation indexes,the evaluation model is established by using entropy weight and double base points method. And then make water quality evaluation according to the calculated weight. Due to the weights made by objective calculation,it rules out the artificial interference and can get more accurate re-sults. Finally,by using the above method,the measured data from three sections of Liaoyang part of Taizi River is analyzed,and by making comparison of the results between the actual water quality situation,it shows that the e-valuation results are very accurate and reasonable.%如何准确地评价地表水水体质量日益成为学科研究热点。利用水质评价基础指标体系，结合评价地区的实际情况，筛选出具有实际代表性的水质评价指标，应用熵权-双基点法，建立起评价模型，根据计算得到的权重来评价水质变化状况。客观计算所得的权值，排除了人为因素的干扰，从而使最终评价结果更加精准。最后运用上述评价模型，对太子河辽阳段中3个断面所测得的水质数据进行分析，并把所得结果与实际水质情况进行对比，验证了该评价模型的合理性及精准性。