Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/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
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ISSN | 2095-0195 |
EISSN | 2095-0209 |
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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