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对2014年艾比湖区域的地表水进行观测和取样,综合运用多元统计、Piper阴阳离子三角图、Gibbs图等方法,对艾比湖区域干湿季地表水化学特征及控制因素进行了分析.结果表明:在湿季5月,Na~+和Cl~-是占绝对优势的离子,分别占阳离子和阴离子总量的70.34%和52.97%,其次是Mg~(2+)和SO_4~(2-);在干季10月,Na+和Cl-是占绝对优势的离子,分别占阳离子和阴离子总量的70.57%和66.48%,其次是Mg~(2+)和SO_4~(2-).进而判断出在湿季,艾比湖区域地表水水化学类型为以碳酸盐岩石和蒸发岩来源为主的HCO_3~--Ca~(2+)-Na+型;而在干季,艾比湖区域地表水水化学类型为以碳酸盐岩石和蒸发岩来源为主的HCO_3~--Ca~(2+)型.此外,探讨了离子控制的因素.就自然因素而言,在干湿季,艾比湖区域地表水化学离子组成受岩石风化作用和蒸发结晶作用的共同影响,大气降水的输入作用十分微弱.就人为因素而言,根据相关研究,干湿季人为活动中的主要因素是人口和地区生产总值,说明该区域受到人为活动的影响.本研究为我国干旱地区对于河水水化学变化、水质特征、水质保护都具有重要的意义.
The surface water in the Aibi Lake area in 2014 was observed and sampled. The chemical characteristics and controlling factors of the surface water in the wet and dry season in the Aibi Lake area were analyzed by multivariate statistics, Piper anions and trigonometry, and Gibbs plots. The results showed that Na ~ + and Cl ~ - were the dominant ions in wet season, accounting for 70.34% and 52.97% of the total cation and anion, respectively, followed by Mg 2+ and SO 4 2- -). In the dry season in October, Na + and Cl- are the dominant ions accounting for 70.57% and 66.48% of the total cation and anion, respectively, followed by Mg 2+ and SO 4 2-. Furthermore, it is concluded that in the wet season, the hydrochemical types of surface water in the Lake Aibi are HCO_3 ~ - Ca ~ (2 +) - Na + which are mainly derived from carbonate rocks and evaporites; while in the dry season, The hydrochemical types of surface water in the lake area are HCO_3 ~ - Ca ~ (2+) type mainly of carbonate rock and evaporite source. In addition, the factors of ion control are discussed. In terms of natural factors, In the season, the chemical composition of surface water in the Lake Aibi area is affected by both the weathering and evaporative crystallization of rocks, and the input of atmospheric precipitation is very weak. In terms of human factors, The main factors in anthropogenic activities during the wet and dry seasons are the population and GDP, indicating that the area is affected by human activities.The study is of great significance to the chemical changes of river water, water quality and water quality in arid areas of China. .