Major ion chemistry of groundwater in the extreme arid region northwest China

Major ion chemistry of groundwater in the extreme arid region northwest China
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西北极端干旱地区地下水主要离子化学

DOI:
10.1007/s00254-008-1394-x
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发表时间:
2009-05
期刊:
Environmental Geology
影响因子:
--
通讯作者:
Qi, Feng
Qi, Feng
中科院分区:
其他
文献类型:
--
作者:
Si Jianhua;Chang Zongqiang;Wen Xiaohu;Xi Haiyang;Su Yonghong;Qi, Feng

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额济纳盆地位于中国干旱的西北地区,是世界上最干旱的地区之一。近年来,由于经济的快速发展,人们对水的需求越来越大,越来越多地通过抽取地下水来满足需求。对地下水和水质地球化学演化的详细认识可以提高对水化学系统的认识,促进地下水资源的可持续发展和有效管理。为此,在额济纳盆地进行了水化学调查,以确定主要的水化学特征。化学分析结果表明,该地区的地下水为微咸水。不同区域的主要离子、TDS和水化学类型变化很大,从补给区到排放区呈现明显的区带性。根据离子比线图计算的饱和指数(SI)表明,石膏-岩盐溶解反应在一定程度上是在岩石风化条件下发生的,蒸发是决定研究区主要离子组成的主导因素。
The Ejina Basin, located in arid northwest China, is one of the most arid areas in the world. In recent years, rapid development has created a greater demand for water which is increasingly fulfilled by groundwater abstraction. Detailed knowledge of geochemical evolution of groundwater and water quality can improve the understanding of a hydrochemical system, and promote sustainable development and effective management of groundwater resources. To this end, a hydrochemical survey was conducted in the Ejina Basin in order to identify the major hydrochemical characteristics. The results of chemical analysis indicate that groundwater in the area is brackish. The major ions, TDS, and hydrochemical types of different areas are highly variable and show an obvious zonation from the recharge area to the discharge area. Saturation index (SI), calculated according to the ionic ration plot, indicates that the gypsum-halite dissolution reactions take place under the condition of the rock weathering to some extent, and evaporation is the dominant factor to determine the major ionic composition in the study area.
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发表时间: 2005-07
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影响因子: --
作者:
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影响因子: 2.8
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