地下水浅埋条件下单向冻结土壤水热变化试验
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

国家自然科学基金资助项目(40472132)、国家国际科技合作专项资助项目(2012DFA20770)、高等学校博士学科点专项科研基金资助项目(20131402110008)、山西省自然科学基金资助项目(2012011033—2)和太原理工大学2012年校青年基金资助项目(2012L016)


Variation of Soil Temperature and Moisture under Unidirectional Freezing with Shallow Groundwater
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    采用室内土壤单向冻结试验装置,进行了地下水位埋深为87.5cm的小幅降温、中幅降温和大幅降温3种冻结气温作用下砂壤土和粉质粘壤土的温度和土壤含水率的监测。结果表明:小幅降温、中幅降温和大幅降温冻结条件下砂壤土地表温度较粉质粘壤土分别低0.88、2.06和2.81℃,土壤剖面温度分别在第31、33和37天达到稳定降温阶段;砂壤土水分主要聚集在10~30cm,而粉质粘壤土水分主要聚集在10~40cm;小幅降温冻结下,砂壤土0~10cm土壤含水率较中幅降温和大幅降温冻结下高1.5%和7.3%,粉质粘壤土0~10cm土壤含水率较中幅降温和大幅降温冻结下高2.3%和2.7%。

    Abstract:

    In order to reveal the influence of decreasing range of freezing air temperature (DRFT) and soil texture on soil temperature variation and soil moisture migration with shallow groundwater, three freezing schemes, less DRFT, medium DRFT and larger DRFT, were conducted with the groundwater level depth of 87.5cm, and the temperature and moisture content of sandy loam and silty clay loam were monitored. The results showed that the surface temperature of sandy loam was lower than that of silty clay loam freezing by less DRFT, medium DRFT and larger DRFT about 0.88℃, 2.06℃ and 2.81℃, and soil profile temperature reached steady decreasing stage in 31d, 33d and 37d respectively. Soil moisture of sandy loam mainly gathered at the depth of 10cm to 30cm and that of silty clay loam gathered at the depth of 10cm to 40cm. Soil moisture of sandy loam at the depth of 0cm to 10cm freezing by less DRFT was higher than that freezing by medium DRFT and larger DRFT about 1.5% and 7.3%, while it was 2.3% and 2.7% respectively for silty clay loam. 

    参考文献
    相似文献
    引证文献
引用本文

陈军锋,杨军耀,郑秀清,秦作栋,刘萍,臧红飞.地下水浅埋条件下单向冻结土壤水热变化试验[J].农业机械学报,2014,45(12):146-151,248.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2014-08-11
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2014-12-10
  • 出版日期: