灰色聚类评价在典型热带水体水质评价中的应用

目的]明确利用灰色聚类方法评价典型热带水体水质的可行性。方法]在海南松涛水库库区设置8个采样点(S1~S8),监测总磷含量、总氮含量、叶绿素a含量、高锰酸盐指数、透明度等水质指标,利用灰色系统方法评价该水库的水质。结果]监测点S1、S2、S3、S4、S5、S6为灰类Ⅱ,属二级水质;监测点S7、S8为灰类Ⅲ,属三级水质,说明松涛水库水质整体较好,大多数水质指标能达到Ⅱ类标准,基本满足松涛水库的Ⅱ类水质目标要求,但水库局部水体出现总磷等多点浓度超标。结论]灰色聚类方法评价水体水质具有计算简单、分辨率高、结果客观合理等优点,是适用于水环境质量评价的较好的方法。

Application of Grey Clustering Evaluation in Water Quality Assessment of Typical Tropical Water

Objective] The aim was to definite the feasibility of using grey clustering method to evaluate the water quality of the typical tropical water.Method] 8 sampling points(S1～S8) were set up in the Songtao reservoir of Hainan Province to monitor the water quality indexes such as total P content,total N content,chlorophyll a content,permanganate index and transparency,and the water quality of the reservoir was evaluated by gray system method.Result] The monitoring points of S1,S2,S3,S4,S5 and S6 were gray class Ⅱ,belonging to two level water quality and the monitoring points of S7 and S8 were gray class Ⅲ,belonging to the three level water quality,which showed that the whole water quality of Songtao reservoir was better,most water quality indexes could reach the two level water quality standard and it could meet the goal demand of the two level water quality of the Songtao reservoir,but the concn.of total P etc.in multipoint exceeded the standard in the local water of the reservoir.Conclusion] Using grey clustering method to evaluate the water quality had some advantages such as simple calculation,high differentiation rate and objective and rational result,which was a better method fitting for water environmental quality evaluation.