巴丹吉林沙漠湖泊与地下水化学参数初步研究  

Spatial Patterns of Chemical Parameters of Lakes and Groundwater in Badain Jaran Desert

作　　者：陈立[1] 王乃昂[1] 王浩[1] 董春雨[1] 陆莹[1] 路俊伟[1] 

机构地区：[1]兰州大学资源环境学院/干旱区气象变化与水循环研究中心,甘肃兰州730000

出　　处：《中国沙漠》2012年第2期531-538,共8页Journal of Desert Research

基　　金：国家基础科学人才培养基金项目(J1030519);高等学校博士学科点专项科研基金项目(20090211110025)联合资助

摘　　要：通过分析巴丹吉林沙漠内部8个泉水、12个井水、51个湖水的化学参数,初步探讨了湖泊与地下水化学参数的空间分布规律,比较近10a来湖水矿化度值的变化情况,并对地下水与湖水各水化学参数值进行了对比分析。结果表明,沙漠腹地湖水TDS值从西北向东南逐渐降低,Na-Cl-CO3-(SO4)型湖水向东南过渡成Na-CO3-Cl-(SO4)型湖水,推测这种分布状况主要受当地气候的影响,同时受制于局部环境条件;沙漠东南边缘湖水矿化度值长期维持低值,SO24-离子含量较CO23-高,气候条件相对腹地湿润,可能存在大量的淡水资源补给;湖水TDS值的年际变化主要受气候变化的控制;沙漠地下水矿化度值并未出现和湖水类似的空间趋势性,并且地下水和湖水的TDS值线性相关不显著。In this study,71 water samples were collected from Badain Jaran Desert,which included 8 springs,12 wells and 51 lakes.The spatial distribution patterns of chemical parameters and total dissolved solids(TDS) of lakes during the past 10 years were analyzed.Result shows that total dissolved solids of lakes gradually decrease from northwest to southeast.Affected by weather conditions and local environments the hydrogeochemical type of lakes turns from Na-Cl-CO_3-(SO_4) into Na-CO_3-Cl-(SO_4).The lakes that lie in the southeast Badain Jaran Desert have low TDS and the content of SO～～2-__4 is more than CO～～2-__3 for a large recharge of fresh water resource.The TDS of groundwater are different from surface water,and there is no clear linear correlation between them.

关 键 词：水化学 矿化度 分布规律 巴丹吉林沙漠 

分 类 号：P342[天文地球—水文科学]