摘要
目前,评价水质的因子有总磷、总氮、重金属元素、溶解氧等多项指标,评价方法一般有模糊数学法、隶属度法及灰色建模法等。但这些评价方法大都针对水体等级的评价,而对指标权重确定的方法相对较少。对于一个水库或湖泊,确定各指标间的权重关系,对评价水库或湖泊整体水质好坏有重大意义。通过运用层次分析法,以山仔水库中的七里、库心、日溪口和坝前4个点为例对水质进行评价,最后确定各污染因子间的权重关系,得出该库中总磷污染最重,这与当年政府为除磷而关闭周边养猪厂的做法相符。
At present ,the factors which can express the water's quality are total phosphorus,total nitrogen,heavy metal ,dissovled oxygen and so on.Its usual assessment methods are degree of membership method,fuzzy mathematics method,grey forecast method and so on .But most of these methods mainly concerned about the classes of waterbody, whereas there are less methods about how to evaluate the weight comparably.As for a reservoir or a lake,how to evaluate the weight relationship among the factors has a big sense to find the whole water quality of the reservoir or a lake which is whether good or bad. This article through making use of applying analylic hierarchy process method,taking Qili,Kuxin,Rixikou and Baqian these four area points for example made the assessment of water quality factors , acertained the weight of each pollution factor ,and got the result that the main pollution of this reservoir was total phosphorus′s pollution. That accorded with the action of the local government which closed the factories of feeding pigs nearby in order to get rid of phosphorus .
基金
福建省自然科学基金资助项目
编号:F0210095
关键词
层次分析
评价指标
权重
Analylic hierarchy process
Assessment factors
Weight
