摘要
利用突变理论与模糊分析,选择总氮、氨氮、硝态氮、总磷、可溶磷5项水质特征指标作为评价因子,对农田减污系统进行多层目标分解,构建了农田面源污染治理突变理论评价模型。结合广西桂林青狮潭灌区农田防污系统的试验数据,应用该评价模型对田间水肥最优调控、草沟、湿地和骨干生态沟四道防线的减污效果进行了评估,评估结果与实际完全相符。与传统评判方法相比,该方法避免了由于主观原因造成的误差,评价结果客观准确、方法简单。
This paper selects 5 water quality characteristic indexes of total nitrogen,ammonia nitrogen,nitrate nitrogen,total phosphorus and soluble phosphorus as evaluation factors,and then makes multi-layer target decomposition of farmland pollution reduction system by using mutation theory and fuzzy analysis,and finally constructs a theoretical evaluation model of farm non-point sources pollution control measures.Based on the experimental data from Qingshitan Irrigation Scheme of Guilin,Guangxi,this evaluation model is used to evaluate the effect of pollution reduction measures on four lines of defense,i.e.on-farm water-fertilizer regulation,farm-level ditches,constructed wetland and backbone ecological ditch.The evaluation results are in full agreement with the actual situation.Compared with the traditional evaluation method,this method avoids the errors caused by subjective reasons,so the evaluation results are objective and accurate.The method is worthy of popularization and application.
作者
李晓红
万玉文
LI Xiao-hong;WAN Yu-wen(Guangxi Technology College of Water Conservancy and Electric Power,Nanning 530023,China)
出处
《中国农村水利水电》
北大核心
2019年第8期52-55,62,共5页
China Rural Water and Hydropower
基金
广西水利科技项目(NO201423)
广西高效科研项目(200103YB184)
关键词
面源污染
污染防控
突变理论
non-point source pollution
pollution control
catastrophe theory
evaluation
model
irrigation scheme
