摘要
针对内梅罗综合评价法过于突出最大污染因子和未考虑权重因素的缺点对其进行了改进,并结合GIS软件,分别对吉林西部地下水1993年和2004年水质状况进行了评价,并划分了水质分区。结果表明:研究区内潜水水质主要为Ⅳ级,承压水水质多为Ⅱ、Ⅲ级;2004年水质与1993年相比有所恶化。区内对水质级别起决定作用的离子主要为NH4+和F-。以氮素为例,对污染因子进行了成因分析,并针对污染成因提出了防治建议。
Because of Nemerow index method having defects that it excessively emphasized the maximal pollution factor and ignored weight factor, the Nemerow index method was improved, GIS was also applied to evaluate the groundwater quality in West Jilin Province in 1993 and 2004, and water quality zones were divided. The results shows that phreatic water quality in the study area is mainly of Ⅳ class, Water quality in confined water is generally better than in phreatic water, mostly of Ⅱ and Ⅲ class. Water quality in 2004 is worse than in 1993, not only phreatic water, hut also confined water has a trend of being polluted step by step. The ions for determining water quality class in the area mainly are and , which are overproof seriously in many areas. Taking as example, pollution factor was analyzed polluted reasons, and some prevent suggestion were presented.
出处
《节水灌溉》
北大核心
2008年第2期42-45,共4页
Water Saving Irrigation
基金
高等学校博士学科点专项科研基金资助项目(20050183055)
关键词
改进的内梅罗法
GIS
水质评价
吉林西部
improved Nemerow index method
GIS
water quality evaluation
West Jilin Province
