叶尔羌河流域地下水环境背景值研究  

Study on Groundwater Environmental Background Values in Yarkant River Basin

作　　者：康宁 唐欢[2] 陈硕 冯加远 

机构地区：[1]北京求思智云科技有限公司,北京100085 [2]西北大学,陕西西安710069

出　　处：《地下水》2016年第5期80-82,共3页Ground water

基　　金：西北地区主要城市地下水污染调查评价项目资助(1212011220982)

摘　　要：采用数理统计方法,对新疆叶尔羌河流域地下水水化学指标Na^+、Mg^(2+)、Cl^-、SO_4^(2-)、TH、TDS、F^-和NO_2^-的环境背景值进行分析计算。结果显示:地下水水化学指标多以正态和对数正态分布,不同的地质地貌、水文地质单元以及水动力条件等因素对研究区地下水水化学指标的空间分布起主要控制作用。Na^+、Mg^(2+)、Cl^-、SO_4^(2-)、TH、TDS和F^-天然环境背景值高,它们的过量富集主要受控于原生地质环境,而NO_2^-的天然背景值很低,它的过量富集主要受后期人类活动的影响。We analyzed and calculated the environmental background values of Na^＋,Mg^2＋,Cl^-,SO4^2-,TH,TDS,Fand NO2^- in Yarkant River,Xinjiang Province. The results demonstrate that the hydrochemical indexes of groundwater chemicals distribute mostly in normal distribution or in lognormal distribution,and their spatial distributions are effected primarily by the geologic,topographic,hydrogeological,and hydro- dynamic conditions of the area. The environmental background values of Na^＋,Mg^2＋,Cl^-,SO4^2-,TH,TDS,and F^- are high by nature,and the enrichment of these chemicals is mainly resulted from the protogenic geological environment. In the contrast,the value of NO2^- is low by nature,and its enrichment is resulted from human activities.

关 键 词：叶尔羌河流域 地下水 环境背景值 数理统计 

分 类 号：P641.8[天文地球—地质矿产勘探]