摘要
选取2004年的6月和7月的10个监测点的检测数据,运用模糊权的物元分析模型进行水质等级识别。结果表明:6月有7个监测点水质等级特征值大于7月的,而且其加权平均值比7月的高了0.39。通过分析乌梁素海同期水质监测指标浓度变化趋势发现:7月乌梁素海水质比6月的有所好转,水质等级降低。综合分析进入乌梁素海的农田面源中的氮磷与河套灌区农事活动情况,可以看出乌梁素海的农业开发方式、农田灌溉行为与施肥习惯是乌梁素海水质恶化的主要原因。
Through selecting the detection data of 10 sites in June and July of 2004,the matter element analysis model based on fuzzy weight was applied to identify the water quality grade.The results indicated that the water quality grade values in 7 sites in June were larger than in July,and the weighted average value in June was larger 0.39 than in July,too.Through analyzing the change trend of the concentration of monitoring data at the same time,the water quality in July was better than in June.Through comprehensively analyzing the Nitrogen and Phosphor of Non-point Source Pollution entering Wuliangsuhai lake and the agriculture activity in Hetao irrigation district,it could be concluded that the main causes of water deterioration were the agricultural development mode,the irrigation activity and the fertilizing habit.
出处
《节水灌溉》
北大核心
2010年第7期19-23,26,共6页
Water Saving Irrigation
基金
国家水体污染控制与治理科技重大专项
项目(2008ZX07106-001)
关键词
乌梁素海
灌排渠
物元
水质
农田
Wuliangsuhai Lake
irrigation-drainage cannel
matter element
water quality
farmland
