延边州地下水环境质量空间变异性分析

Spatial variability of groundwater environmental quality in Yanbian State

为分析延边州浅层地下水环境质量空间变异性,选取14项监测指标,运用R型主因子分析法得出相关系数矩阵,分析出4个主因子及相应的因子得分,主因子1、2、3、4的贡献率分别为31.35%、23.58%、11.04%、10.27%,主因子1是最有影响的因子,代表色度、大肠菌群、细菌总数、Fe四项指标;主因子2、3、4分别代表NO3-N、SO42-、Hd、溶解性总固体,NO2-N、NH4-N、Mn、CODMn,pH值、F-指标。对因子得分运用Word聚类法将该区域分为A、B、C、D、E 5个亚类区域空间和Ⅰ类低污染、Ⅱ类高污染两大类空间。结果分析表明:敦化、珲春部分区域污染最严重,和龙、安图、汪清部分区域污染严重,属于Ⅱ类高污染空间,其他区域为Ⅰ类低污染空间。

In order to analyze the spatial variability of groundwater environmental quality of Yanbian State, four main factors and their scores were obtained by using the R-type main factor analysis method and the relative coefficient matrix. The contribution rates of the factors were 31.35%, 23.58%, 11.04% and 10.27% respectively, among which the Ist factor is the most effective factor, including colourity, coliform group, total bacterium and Fe, while the 2ha, factor refers to NO3-N, SO4^2-, Hd, and TDS, the 3nd factor reters to NO2-N, NH4-N, Mn, and CODMn, and the 4th factor reters to and pH and F^-, respectively. Then Word clustering method was used to divide this area into five subareas, A, B, C, D, E, and two pollution areas, i.e., slightly polluted area Ⅰ and Ⅱ seriously polluted area Ⅱ . The result showed that Dunhua and Hunchun were the most seriously polluted areas, Helong, Antu and Wangqing were seriously polluted area of type Ⅱ ; and the other place belongs to type Ⅰ.