地下水蒸发规律及其与土壤盐分的关系
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* 中国三峡工程开发公司项目SX(97)114;国家重点基础研究发展规划项目G1999011803


EVAPORATION REGULARITY AND ITS RELATIONSHIP WITH SOIL SALT
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    摘要:

    用粉砂壤土土柱进行了为期一年的室内模拟试验,对不同地下水作用条件下地下水蒸发规律进行了深入研究,并且研究了土壤盐分与地下水蒸发量之间的关系。研究表明,各地下水作用条件下地下水蒸发量与试验时间呈显著线性相关。地下水矿化度越低,地下水累积蒸发量对地下水矿化度的变动越为敏感;地下水埋深越大,累积蒸发量对地下水埋深变动的敏感性越强。建立了地下水累积蒸发量与地下水埋深、地下水矿化度的关系。分析了土壤盐分与地下水蒸发量之间的关系并得到了其模型。

    Abstract:

    With a one year indoor silt loam column simulation experiment, regularity of evaporation of groundwater under different groundwater conditions was studied, and so was the relationship between soil electric conductivity (of 0~40cm layer) and total amount of evaporation.The results showed that even under different groundwater conditions total amount of evaporation was in linear relationship with duration of the experiment, that the lower the mineralization of the groundwater was, the more sensitively related the cumulat ive amount of evaporation was to variation of the mineralization of the groundwater, and that the deeper the groundwater table was, the more sensitively related the cumulative amount of evaporation was to variation of the depth of groundwater table.The relationship of total amount of evaporat ion with groundwater table as well as groundwater salinity was thus set up.After mineralized groundwater influenced 0~40cm layer soil, soil electric conductivity there was logarithmic to total amount of evaporation when the groundwater table was at 85cm or 105cm, but exponential when the groundwater table was at 155cm.

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刘广明,杨劲松,李冬顺.地下水蒸发规律及其与土壤盐分的关系[J].土壤学报,2002,39(3):384-389. DOI:10.11766/trxb200101250313 Liu Guang-ming, Yang Jing-song, Li Dong-shun. EVAPORATION REGULARITY AND ITS RELATIONSHIP WITH SOIL SALT[J]. Acta Pedologica Sinica,2002,39(3):384-389.

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  • 收稿日期:2001-01-25
  • 最后修改日期:2001-12-27
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  • 在线发布日期: 2013-02-25
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