为了解艾比湖流域地表水的水化学特征,利用SPSS17.0,ArcGIS等软件分析了该流域58个点位水化学指标,并按照地表景观特征分为6条路线,分别为绿洲①、沿沙漠边缘、艾比湖周边、绿洲②、山区周边和博河(博尔塔拉河)至艾比湖沿线.结果表明:⑴基本特征:除pH外,其余各指标在艾比湖湖区周边的变异性很强,其余各处的变异较小.(2)各指标间的相关性: Cl-与Na+、Ca2+呈极显著相关,与SO2-4、K+、Mg2+呈显著相关,说明极易形成NaCl盐和硫酸盐.(3)空间分布:电导率、矿化度等指标的高值空间分布格局大体一致,都是以艾比湖为中心向南北两个方向逐步减小的空间分布格局,但pH的高值分布范围偏流域的西北部,并且HCO-3的高值分布范围比其它离子指标的范围大;各指标等值线的变异强度以艾比湖为中心向东西方向骤降.
In this paper, statistical analysis was conducted with SPSS 17. 0 software, and ArcGIS 10.0 was used for the geostatistical analysis and spatial interpolation of hydro-chemistry characteristics and water quality in Ebinur Lake Basin. There are 58 sampling points distributed in the basin, and the points were divided into six routes:oasis①, the edge of the desert, surrounding the Ebinur Lake, oasis ②, surrounding the mountains and from Boertala River to Ebinur Lake respectively. The results showed that, except pH value, the spatial variability of other indicators was relatively strong around the Ebinur Lake, but small in other areas. Highly significant correlations were observed between Cl- and Ca2+, Na+, and significant correlations with SO2-4 , K+ and Mg2+, which mean easy formation of sodium chloride and sulphate. Results from the spatial distribution analysis revealed that, EC, TDS and other indicators displayed largely similar pattern of decreasing from the lake center to the north and the south. However, higher values of pH distributed in the northwest of the basin, and higher values of HCO-3 distributed in a much wider range than other ions. The variation intensity of each index contour line plunged from the lake center towards the east and west.