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首页> 外文期刊>Environmental earth sciences >Relationships between precipitation, soil water and groundwater at Chongling catchment with the typical vegetation cover in the Taihang mountainous region, China
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Relationships between precipitation, soil water and groundwater at Chongling catchment with the typical vegetation cover in the Taihang mountainous region, China

机译：太行山地区崇岭流域降水，土壤水和地下水与典型植被的关系

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摘要

Vegetation cover plays an important role in the process of evaporation and infiltration. To explore the relationships between precipitation, soil water and ground-water in Taihang mountainous region, China, precipitation, soil water and water table were observed from 2004 to 2006, and precipitation, soil water and groundwater were sampled in 2004 and 2005 for oxygen-18 and deuterium analysis at Chongling catchment. The soil water was sampled at three sites covered by grass (Carex humilis and Carex lanceolata), acacia and arborvitae respectively. Precipitation is mainly concentrated in rainy seasons and has no significant spatial variance in study area. The stable isotopic compositions are enriched in precipitation and soil water due to the evaporation. The analysis of soil water potential and isotopic profiles shows that evaporation of soil water under arborvitae cover is weaker than under grass and acacia, while soil water evaporation under grass and acacia showed no significant difference. Both δ~(18)O profiles and soil water potential dynamics reveal that the soil under acacia allows the most rapid infiltration rate, which may be related to preferential flow. In the process of infiltration after a rainstorm, antecedent water still takes up over 30% of water in the topsoil. The soil water between depths of 0-115 cm under grass has a residence time of about 20 days in the rainy season. Groundwater recharge from precipitation mainly occurs in the rainy season, especially when rainstorms or successive heavy rain events happen.
机译：植被覆盖在蒸发和渗透过程中起着重要作用。为了探讨中国太行山区降水，土壤水和地下水之间的关系，我们观察了2004年至2006年的降水，土壤水和地下水位，并于2004年和2005年对降水，土壤水和地下水进行了采样， 18和崇岭流域的氘分析。在分别被草覆盖的三个地点（Carex humilis和Carex lanceolata），阿拉伯树胶和侧柏取样了土壤水。降水主要集中在雨季，研究区域内没有明显的空间变化。由于蒸发，稳定的同位素组成富含降水和土壤水。对土壤水势和同位素特征的分析表明，侧柏覆盖下的土壤水分蒸发较草木和相思树种弱，而草木和相思树种的土壤水分蒸发没有显着差异。 δ〜（18）O剖面和土壤水势动力学都表明，洋槐下的土壤入渗速率最快，这可能与优先流动有关。在暴雨过后的渗透过程中，前期水仍占据表土中30％以上的水。草下0-115厘米深度之间的土壤水在雨季的停留时间约为20天。降水带来的地下水补给主要发生在雨季，特别是在暴雨或连续的暴雨事件发生时。

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  • 来源
    《Environmental earth sciences》 |2011年第4期|p.787-796|共10页
  • 作者

    Xianfang Song; Peng Wang; Jingjie Yu; Xin Liu; Jianrong Liu; Ruiqiang Yuan;

  • 作者单位

    Chinese Academy of Sciences, Institute of Geographic Sciences and Natural Resources Research, Beijing 100101, China;

    Chinese Academy of Sciences, Institute of Geographic Sciences and Natural Resources Research, Beijing 100101, China;

    Chinese Academy of Sciences, Institute of Geographic Sciences and Natural Resources Research, Beijing 100101, China;

    Chinese Academy of Sciences, Institute of Geographic Sciences and Natural Resources Research, Beijing 100101, China;

    Chinese Academy of Sciences, Institute of Geographic Sciences and Natural Resources Research, Beijing 100101, China;

    Chinese Academy of Sciences, Institute of Geographic Sciences and Natural Resources Research, Beijing 100101, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    precipitation; soil water; groundwater; stable isotopes; vegetation; taihang mountainous;

    机译：沉淀;土壤水;地下水;稳定同位素植被;太行山;

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