Research on the comprehensive assessment method for rural black and odorous water bodies
The investigation of black and odorous water bodies in rural areas is a crucial aspect of beautiful rural construction.Evaluating 141 black and odorous water bodies in three counties of Zhoukou City,Henan Province,a new assessment method for rural black and odorous water bodies was established using correlation analysis,multiple regression analysis,and sensitivity analysis methods.Compared to the traditional guideline-based method,this new method showed more precise performance in the judgment of black and odorous water bodies.Although the guideline-based method was more suitable for general water bodies,there was a larger divergence among the evaluation indicators in evaluating the water bodies with varying degrees of foul smell,resulting in a lower true positive rate.The new method took into account the causes of black and odorous water bodies in rural areas,replaced dissolved oxygen(DO)with total phosphorus(TP)compared to the guideline-based method,and proposed a comprehensive evaluation method considering sensory,NH3-N and TP,which was more in line with the actual situation of rural black and odorous water bodies.The accuracy rate(AUC)value by the new method for evaluating black and odorous water bodies was 0.86,which was significantly higher than the AUC values of 0.71 by the guideline-based method.The new method was fast,concise,and practical,which can provide a reliable basis for the identification and subsequent treatment of black and odorous water bodies in rural areas of China.
rural black and odorous water bodiescomprehensive evaluationmultiple regression analysissensitivityreceiver operating characteristic curve
万方数据
维普
