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渭河陕西"二华"段浅层地下水水化学特征

, PP. 427-432

Keywords: "二华"地区,浅层地下水,水化学成分,空间变化,陕西,渭河

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Abstract:

渭河流经陕西华阴、华县(二华)段,通过对"二华"地区浅层地下水取样分析,系统研究其地下水化学成分的空间变化及演变规律。结果表明"二华"地区浅层地下水主要接受秦岭山前地下水的补给,靠近渭河沿岸地区,接受渭河的侧向补给。地下水的补给、径流、排泄区水化学类型主要从HCO3·SO4-Ca·Mg经SO4·HCO3-Na·Ca过渡到SO4·Cl-Na型;其矿化度、硬度逐渐升高,在地下水漏斗处达到最大值;Cl-,Mg2+和Na+高盐分离子逐渐累积,水质总体向咸化方向发展。

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