玛纳斯河流域典型地区地下水质量现状评价与变化趋势分析

摘要

依据2010年地下水水质统测数据,采用单因子评价法对玛纳斯河流域石河子市-新疆生产建设兵团150团地区地下水现状质量进行了评价；依据2001-2010年地下水水质监测数据对石河子市-石河子总场地区地下水水质变化趋势进行了分析.地下水质量现状评价结果显示：石河子市-新疆生产建设兵团150团地区2010年Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ类水所占比例分别为0,12．5％,12．5％,62．5％,12．5％；影响地下水质量的关键项目是总硬度(以CaCO3计)、矿化度(TDS)、pH 值、氯化物(Cl-)、硫酸盐(SO2-4)以及“三氮”(NO-3、NO-2、NH＋4).地下水水质变化趋势分析结果显示：石河子市-石河子总场地区总硬度(以CaCO3计)、总矿化度(TDS)、氟化物(F-)、氯化物(Cl-)、硫酸盐(SO2-4)以及“三氮”(NO-3、NO-2、NH＋4)等呈上升趋势,说明玛纳斯河流域冲洪积平原区中下部及溢出带地下水水质呈逐年恶化趋势,应及时采取有效措施遏制地下水水质不断恶化态势.%In this paper,groundwater quality of Shihezi-Regiment Farm 150 of Xinjiang Production and Construction Corps in the Manas River Alluvial Basin was assessed with the single factor method by groundwater quality statistics data of 2010.Nearly a decade change trend of groundwater quality in Shihezi general farm region were analyzed with groundwater quality data from 2001 to 2010.Results that proporG tion of class Ⅰ,Ⅱ,Ⅲ,Ⅳ and Ⅴ groundwater in Shihezi-Regiment Farm 150 of Xinjiang Production and Construction Corps was 0%,12.5%,12.5%,62.5% and 12.5%,respectively.The main influence factors of groundwater quality were total hardness (in terms of CaCO3 ),total dissolved solids (TDS),pH value, Cl-,SO2-4 ,and three nitrogen (NO-3 ,NO-2 ,NH+4 )compounds.The changs trend analysis of groundwater quality showed that total hardness (in terms of CaCO3 ),total dissolved solids (TDS),fluoride,Cl-, SO2-4 ,and three nitrogen (NO-3 ,NO-2 ,NH+4 )compounds have a rising trend in Shihezi general farm reG gion.The results suggested that the groundwater quality in the middle and lower reaches of Manas Alluvial Plain region and overflow zone has been worsening increasingly in recent years.Effective measures should be carried out promptly to eradicate the worsened situation of groundwater.