模糊数学法在海洋水质评价中的应用

Application of the Fuzzy Mathematics on the Assessment of Water Quality in Coastal Waste-Dumping Zone

根据福建东碇临时海洋倾倒区2007—2009年间实施的5次海水水质监测资料,应用模糊合成-加权平均复合模型对该区及周边海域水质进行综合评价,分析倾倒活动对水质的影响情况,并与单参数特征值法评价结果相比较。结果表明:应用模糊合成的原理,根据最大隶属度原则评价水质,体现了分级界限的模糊性,其评价结果较单参数特征值法更接近客观实际。

Using the seawater quality monitoring data in Fujian Dongding provisional coastal waste-dumping zone for five surveys from 2007 to 2009,the fuzzy composition and weighted average complex model is adopted to evaluate the seawater quality in the waste-dumping zone and nearby area.The evaluation result was applied in analyzing the influence of dumping activity on seawater quality,while being compared to the assessed result of single factor water quality identification index.The result showed that the fuzzy composition theory based on the ＂the biggest subordination＂ principle incarnates the fuzziness of classification limits,which is more impersonal than the result of single factor water quality identification index.