基于模糊综合评价的2018年厦门湾海水水质评估OA

Based on the water quality monitoring results of Xiamen Bay in the first three seasons of 2018,a fuzzy comprehensive evaluation method was used to assess the water quality of 16 stations in 6 areas of the bay.Firstly,based on the national seawater quality standards,the dissolved oxygen concentration,chemical oxygen consumption concentration,inorganic nitrogen concentration,and active phosphate concentration that have the most important impact on seawater quality are selected as the water quality evaluation factors.Then,the fuzzy comprehensive evaluation method is used to specifically evaluate the water quality of 16 stations.Finally,the effectiveness of this method is verified by combining the grey correlation analysis method.The experimental results show that the water quality in Xiamen Bay is evaluated as Class I-II in the southern sea area,eastern sea area,and Dadeng sea area,but only 43.8%of the stations are located there;However,the western waters,Tong'an Bay,and Jiulong River estuary are severely polluted,mainly consisting of Class IV water bodies;and the overall water quality of Xiamen Bay is poor,with inorganic nitrogen being the most important pollutant,and the water quality still needs further improvement.