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首页> 外文期刊>Environmental earth sciences >The response of infiltration depth, evaporation, and soil water replenishment to rainfall in mobile dunes in the Horqin Sandy Land, Northern China
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The response of infiltration depth, evaporation, and soil water replenishment to rainfall in mobile dunes in the Horqin Sandy Land, Northern China

机译：北方科尔沁沙地流动沙丘的入渗深度，蒸发量和土壤水分补充对降雨的响应

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摘要

To understand the relationships among rainfall-infiltration-evaporation-replenishment in mobile dunes in the semi-arid areas of China, we used the Container of Water Distribution (100 x 100 x 120 cm(3)) to examine rainfall infiltration, soil water redistribution, and soil surface evaporation under natural and simulated rainfall conditions. The results showed that infiltration depth was linearly related to rainfall amount and intensity. Rainfall amounts larger than 13.4 mm, could replenish soil water at 60 cm depth after redistribution, while with rainfalls larger than 39.8 mm, infiltration depth could exceed 120 cm. Rainfall amounts larger than 50 mm produced saturated soil water at 120 cm depth, and replenishment amount accounted for 40.4 % of the total amount of rainfall. Soil surface evaporation exhibited a relatively minor change with increases in rainfall when rainfall was larger than 11.8 mm. The amount of evaporation and soil water content were significantly correlated at 0-60 cm soil depth, but not below. These results suggest that the maximum effective depth of evaporation is 60 cm below the ground surface, and that rainfall of 13.4 mm is a threshold distinguishing effective from ineffective rainfall in the mobile dunes of the Horqin Sandy Land.
机译：为了了解中国半干旱地区流动沙丘中降雨-入渗-蒸发-补给之间的关系，我们使用了集水容器（100 x 100 x 120 cm（3））来检查降雨入渗，土壤水分重新分配，以及自然和模拟降雨条件下的土壤表面蒸发。结果表明，入渗深度与降雨量和强度呈线性关系。降雨量大于13.4毫米，可在重新分配后补充60 cm深度的土壤水，而降雨量大于39.8 mm时，渗透深度可超过120 cm。大于50毫米的降雨产生了120厘米深度的饱和土壤水，补给量占降雨总量的40.4％。当降雨大于11.8 mm时，土壤表面蒸发随降雨增加而显示相对较小的变化。在土壤深度为0-60 cm时，蒸发量和土壤水分含量显着相关，但在土壤深度以下则不相关。这些结果表明，最大有效蒸发深度在地表以下60厘米，而13.4毫米的降雨是区分科尔沁沙地流动沙丘中有效降雨和无效降雨的阈值。

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  • 来源
    《Environmental earth sciences》 |2015年第12期|8699-8708|共10页
  • 作者

    Liu Xinping; He Yuhui; Zhang Tonghui; Zhao Xueyong; Li Yuqiang; Zhang Lamei; Wei Shuilian; Yun Jianying; Yue Xiangfei;

  • 作者单位

    Chinese Acad Sci, CAREERI, LSEB, Lanzhou 730000, Peoples R China|Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Naiman Desertificat Res Stn, Lanzhou 730000, Gansu, Peoples R China;

    Chinese Acad Sci, CAREERI, LSEB, Lanzhou 730000, Peoples R China|Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Naiman Desertificat Res Stn, Lanzhou 730000, Gansu, Peoples R China;

    Chinese Acad Sci, CAREERI, LSEB, Lanzhou 730000, Peoples R China|Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Naiman Desertificat Res Stn, Lanzhou 730000, Gansu, Peoples R China;

    Chinese Acad Sci, CAREERI, LSEB, Lanzhou 730000, Peoples R China|Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Naiman Desertificat Res Stn, Lanzhou 730000, Gansu, Peoples R China;

    Chinese Acad Sci, CAREERI, LSEB, Lanzhou 730000, Peoples R China|Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Naiman Desertificat Res Stn, Lanzhou 730000, Gansu, Peoples R China;

    Chinese Acad Sci, CAREERI, LSEB, Lanzhou 730000, Peoples R China|Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Naiman Desertificat Res Stn, Lanzhou 730000, Gansu, Peoples R China;

    Chinese Acad Sci, CAREERI, LSEB, Lanzhou 730000, Peoples R China|Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Naiman Desertificat Res Stn, Lanzhou 730000, Gansu, Peoples R China;

    Chinese Acad Sci, CAREERI, LSEB, Lanzhou 730000, Peoples R China|Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Naiman Desertificat Res Stn, Lanzhou 730000, Gansu, Peoples R China;

    Chinese Acad Sci, CAREERI, LSEB, Lanzhou 730000, Peoples R China|Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Naiman Desertificat Res Stn, Lanzhou 730000, Gansu, Peoples R China;

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

    Mobile dunes; Infiltration depth; Evaporation; Soil water replenishment;

    机译：移动沙丘;渗透深度;蒸发;补充土壤水;

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