基于韦伯-费希纳定律的海域水质综合评价

Seawater environmental quality assessment based on Weber-Fechner Law

基于韦伯-费希纳定律的基本原理,以表征海域水质的DO、COD、PO4-P、无机氮、石油类等参数作为评价指标,通过确定海域水环境质量等级与综合影响指数k i间关系,综合评价海域水环境质量。本研究以渤海湾近岸海域5个监测点为实证案例,并与BP人工神经网络评价结果进行比较分析。结果表明,韦伯-费希纳定律物理意义明确、计算过程简便,评价结果准确,是一种新颖的海水水质综合评价方法。

According to the Weber-Fechner（W-F） Law , some seawater quality parameters, including dissolved oxygen （ DO ） , chemical oxygen demand （ COD ） , active phosphate （ PO4 -P） , inorganic, nitrogen and oil class, served as evaluated indicators of seawater quality, and the relation between the seawater quality grade and the comprehensive effect index ki was determined, the seawater quality is assessed quantificationally, so the novel integrated model was established for assessing the seawater quality. Finally, the model is applied to assessing 5 monitoring stations of Bohai bay offshore and evaluation results are compared with BP artificial neuraI network method. The results show that Weber- Fechner law has explicit physical significance, simple calculation and reasonable for evaluation conclusion.