摘要
为了研究鄯善县地下水水化学系统的演变规律,于2012年5月对鄯善县的地表水和地下水进行了水样采集。采用数学统计方法和三线图解法分析了鄯善县地下水化学分布基本特征:地下水化学组分中K++Na+、Ca2+、Mg2+、Cl-、SO2-4、TDS空间变异性很大,HCO-3的空间变异性较小,pH值的变异性微弱。根据地下水中各化学组分的沿程变化,推测出不同区域地下水化学组分的形成作用:在北盆地山前戈壁砾石带,含氯、钠矿物发生溶滤作用;平原区以蒸发浓缩作用为主,同时伴随脱碳酸作用和硫酸盐溶解的过程;在南盆地主灌区发生渠水、洪水、回灌水相互混合作用;老迪坎则以蒸发浓缩作用为主。对比1959年与现状年的地下水化学变化,表明:北盆地沿火焰山一带水质变差,而南盆地灌区中部水质变好。
In order to study the development of groundwater hydrochemistry in Shanshan County, 67 water samples were collected at the end of May 2012. On the basis of the test result of the water samples, the distribution character of groundwater hydroehemistry in Shanshan County was ana- lyzed by using mathematical statistics method and piper diagram method. The hydrochemieal characteristics and formation mechanics of groundwater were speculated according to the chemical compositions changing characteristics along the groundwater flow. Contrast with the chemical compositions of the groundwater in 1959, the influence of mining of groundwater on hydrochemical was studied. It shows that the quality of water in the north ba- sin along the Flaming Mountains has become worse, while in the center of irrigation area in the south basin is getting better.
出处
《人民黄河》
CAS
北大核心
2014年第1期71-74,共4页
Yellow River
基金
国家自然科学基金资助项目(41272277)
新疆水文学及水资源重点学科基金资助项目(xjsxszyzdxk20101202)
关键词
地下水
水化学
演变规律
鄯善县
ground water
hydrochemistry
develop
Shanshan County
