塔里木河中游输水堤防的修建对地下水化学特征的影响  

Influence of Building the Embankment on Groundwater Hydrochemical Properties in the Middle Reaches of the Tarim River

作　　者：陈永金[1] 李卫红[1] 刘加珍[1] 

机构地区：[1]中国科学院新疆生态与地理研究所

出　　处：《干旱区地理》2005年第1期26-32,共7页Arid Land Geography

基　　金：国家自然科学重点基金(90102007);中国科学院知识创新项目(kzcxl-08-03)资助

摘　　要：通过对塔里木河中游输水堤防修建后,沙子河口、乌斯满和阿其河口三个断面地下水化学特征自2001～2003年的时空变化的监测与分析,初步揭示了在输水堤防影响下地下水化学特征变化的初步规律,结果表明:在空间上,沙子河口断面地下水化学变化规律完全被颠倒过来,乌斯满断面,地下水化学变化规律受输水堤防的影响不十分明显,但地表积盐严重,阿其河口断面,则呈现复杂的变化;在时间上,丰枯期地下水化学特征的正常变化规律在沙子河口被彻底改变,在乌斯满和阿其河口呈现出复杂变化.由于地下水循环具有潜在性和迟滞性,要彻底揭示在输水堤防影响下地下水化学特征时空变化的规律,需要进一步跟踪监测研究.In order to reveal the influence of building the embankment on groundwater hydrochemicalproperties, a set of data of groundwater hydrochemical properties were measured in recent 3 years. Theprimary cognitions of the change of groundwater hydrochemical properties are delivered. That results show thatthe spatial extents of the influence of building the embankment to groundwater hydrochemical properties are1 000 m in distance at the Shazihe River debouchure section and 2 000 m at Usman section, the increase ofmineralization and salt accumulation in topsoil are significant comparing with that before building theembankment the Shazihe River debouchure section. At the Archihe River debouchure section, the change ofgroundwater hydrochemical properties caused by building the embankment is complicated. The change ofgroundwater hardness in flood season and dry season is complicated at the Shazihe River debouchure section,the groundwater hardness in flood season is higher than that in dry season except the tested result of a watersample sampled from a well 2 000 m from the watercourse at the Usman section. At the Archihe Riverdebouchure section,the groundwater hardness is lower in flood season than that in dry season except the testedresults of a water sample sampled from a well 100 m from the watercourse. The mineralization of groundwatershows a complicated change in flood season and dry season at the Shazihe River debouchure section. Ingeneral, the mineralization of groundwater is lower in flood season than that in dry season at both the Usmansection and Shazihe River debouchure section. The content of CI- in flood season is higher than that in dryseason at the Usman section and Shazihe River debouchure section, but it is opposite at the Archihe Riverdebouchure section. The impact of embankment on groundwater hydrochemical properties is complicated andclosely related to local conditions and temporal variation,to understand the in-depth law of embankment ongroundwater hydrochemical properties needs long period of surveying

关 键 词：堤防 输水 河口 断面 修建 地下水化学特征 水循环 时空变化 迟滞性 地表 

分 类 号：P641.3[天文地球—地质矿产勘探]