Arid
DOI10.1007/s11707-015-0502-y
Experimental study of the effect of shallow groundwater table on soil thermal properties
Jiang, Jianmei1; Zhao, Lin1,2; Zeng, Yijian3; Zhai, Zhe2
通讯作者Zhao, Lin
来源期刊FRONTIERS OF EARTH SCIENCE
ISSN2095-0195
EISSN2095-0209
出版年2016
卷号10期号:1页码:29-37
英文摘要

In plains areas with semi-arid climates, shallow groundwater is one of the important factors affecting soil thermal properties. In this study, soil temperature and water content were measured when groundwater tables reached 10 cm, 30 cm, and 60 cm depths (Experiment I, II, and III) by using sensors embedded at depths of 5 cm, 10 cm, 20 cm, and 30 cm for 5 days. Soil thermal properties were analyzed based on the experimental data using the simplified de Vries model. Results show that soil water content and temperature have fluctuations that coincide with the 24 h diurnal cycle, and the amplitude of these fluctuations decreased with the increase in groundwater table depth. The amplitude of soil water content at 5 cm depth decreased from 0.025 m(3).m(-3) in Experiment II to 0.01 m(3).m(-3) in Experiment III. Moreover, it should be noted that the soil temperature in Experiment III gradually went up with the lowest value increasing from 26.0 degrees C to 28.8 degrees C. By contrast, the trends were not evident in Experiments I and II. Results indicate that shallow groundwater has a "cooling" effect on soil in the capillary zone. In addition, calculated values of thermal conductivity and heat capacity declined with the increasing depth of the groundwater table, which is consistent with experimental results. The thermal conductivity was stable at a value of 2.3W.cm(-1)K(-1) in Experiment I. The average values of thermal conductivity at different soil depths in Experiment II were 1.82W.cm(-1).K-1, 2.15W.cm(-1).K-1, and 2.21W.cm(-1).K-1, which were always higher than that in Experiment III.


英文关键词soil temperature thermal property ground-water table depth evaporation
类型Article
语种英语
国家Peoples R China ; Netherlands
收录类别SCI-E
WOS记录号WOS:000373641900003
WOS关键词WATER-VAPOR ; HEAT-TRANSPORT ; LIQUID WATER ; NEEDLE PROBE ; CONDUCTIVITY ; TEMPERATURE ; ENHANCEMENT ; EVAPORATION ; MODEL ; ZONE
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/193092
作者单位1.Tianjin Univ, Sch Chem Engn, Tianjin 300072, Peoples R China;
2.Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China;
3.Univ Twente, ITC Fac, Water Resources Dept, NL-7514 AE Enschede, Netherlands
推荐引用方式
GB/T 7714
Jiang, Jianmei,Zhao, Lin,Zeng, Yijian,et al. Experimental study of the effect of shallow groundwater table on soil thermal properties[J],2016,10(1):29-37.
APA Jiang, Jianmei,Zhao, Lin,Zeng, Yijian,&Zhai, Zhe.(2016).Experimental study of the effect of shallow groundwater table on soil thermal properties.FRONTIERS OF EARTH SCIENCE,10(1),29-37.
MLA Jiang, Jianmei,et al."Experimental study of the effect of shallow groundwater table on soil thermal properties".FRONTIERS OF EARTH SCIENCE 10.1(2016):29-37.
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