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Volume 7 Issue 2
Jul.  2019
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GAO Ye-xin, LIU Ji-chao, FENG Xin, et al. 2019: Experimental study on unsaturated soil water diffusivity in different soils in Hebei Piedmont Plain. Journal of Groundwater Science and Engineering, 7(2): 165-172.
Citation: GAO Ye-xin, LIU Ji-chao, FENG Xin, et al. 2019: Experimental study on unsaturated soil water diffusivity in different soils in Hebei Piedmont Plain. Journal of Groundwater Science and Engineering, 7(2): 165-172.

Experimental study on unsaturated soil water diffusivity in different soils in Hebei Piedmont Plain

  • Horizontal soil column method was used to determine the horizontal diffusion rate of sandy loam, loam and clay loam under the same bulk density. The results showed that the migration rates of different lithological wet fronts were different. The sandy loam had the fastest migration rate, the loam followed, and the clay loam was the slowest, but the law of change is the same among the three lithologies. The volumetric water content affects the change of Boltzmann parameter λ. When the volumetric water content is between 0.35-0.45 cm3/cm3, λ approaches stability. When the volumetric water content is less than 0.35 cm3/cm3, the λ value decreases rapidly with the decrease of water content. The water diffusion rate is related to the volumetric water content and particle size. The greater the moisture content is, the greater the diffusion rate will be. The larger the particle size, the larger the diffusion rate. The diffusivity of sandy loam is 10-30 times larger than that of loam and clay loam. The relationship between water content and diffusion rate is in accordance with the exponential function.
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  • [1] CHEN Peng, CHEN Kang, GAO Ye-xin, 2018: Analysis of phreatic evaporation law and influence factors of typical lithology in Hebei Plain, Journal of Groundwater Science and Engineering, 6, 270-279.  doi: 10.19637/j.cnki.2305-7068.2018.04.003
    [2] SHANG Man-ting, LIU Pei-gui, LEI Chao, LIU Ming-chao, WU Liang, 2017: Effect of climate change on the trends of evaporation of phreatic water from bare soil in Huaibei Plain, China, Journal of Groundwater Science and Engineering, 5, 213-221.
    [3] LI Man, ZHANG Wei, HE Yu-jiang, WANG Gui-ling, 2017: Research on the effect of straw mulching on the soil moisture by field experiment in the piedmont plain of the Taihang Mountains, Journal of Groundwater Science and Engineering, 5, 286-295.
    [4] ZHANG Xiang-yang, CHEN Zong-yu, YANG Guo-min, TU Le-yi, HU Shui-ming, 2016: Krypton-85 dating of shallow aquifer in Hebei Plain, Journal of Groundwater Science and Engineering, 4, 328-332.
    [5] ZHANG Wei, SHI Jian-sheng, XU Jian-ming, LIU Ji-chao, DONG Qiu-yao, FAN Shu-xian, 2016: Dynamic influence of Holocene characteristics on vadose water in typical region of central North China Plain, Journal of Groundwater Science and Engineering, 4, 247-258.
    [6] YUE Gao-fan, LV Wen-bin, ZHANG Wei, SU Ran, LIN Wen-jing, 2016: Optimization of geothermal water exploitation in Xinji, Hebei Province, P. R. China, Journal of Groundwater Science and Engineering, 4, 197-203.
    [7] LIU Ji-chao, SHI Jian-sheng, GAO Ye-xin, REN Zhan-bing, 2016: Exploration on compound water circulation system to solve water resources problems of North China Plain, Journal of Groundwater Science and Engineering, 4, 229-237.
    [8] GUO Long-zhu, 2016: Study on ecological and economic effects of land and water resources allocation in Sanjiang Plain, Journal of Groundwater Science and Engineering, 4, 110-119.
    [9] WANG Shi-qin, SONG Xian-fang, WEI Shou-cai, SHAO Jing-li, 2016: Application of HYDRUS-1D in understanding soil water movement at two typical sites in the North China Plain, Journal of Groundwater Science and Engineering, 4, 1-11.
    [10] CUI Xiang-xiang, FEI Yu-hong, ZHANG Zhao-ji, LI Ya-song, 2015: Distribution and migration of lead in soil of Xiao River, Shijiazhuang, Hebei Province, Journal of Groundwater Science and Engineering, 3, 98-104.
    [11] XU Guang-ming, QI Jian-feng, BI Pan, BAI Gao-feng, 2015: Distribution and evolution features of salinized soil in Hebei Plain, Journal of Groundwater Science and Engineering, 3, 21-29.
    [12] LIU Li-jun, LIU Zhi-gang, LI Dou, ZHANG Shao-cai, CUI Qiu-ping, WANG Juan, 2014: Evaluation of groundwater supply capacity for agricultural drought emergency relief of Hebei Plain, Journal of Groundwater Science and Engineering, 2, 36-45.
    [13] WANG Chun-xiao, ZHANG Zhao-ji, FEI Yu-hong, QIAN Yong, 2014: Research on Migration Features of Salt-Fresh Water Interface on the North China Plain, Journal of Groundwater Science and Engineering, 2, 68-79.
    [14] Qing YI, Yan-pei CHENG, Jian-kang ZHANG, 2014: Analysis on the Salt Content Characteristics of Southern Saline-Alkali Soil in Datong Basin and Its Causes, Journal of Groundwater Science and Engineering, 2, 63-72.
    [15] CUI Qiu-ping, LIU Zhi-gang, LIU Li-jun, ZHANG Shao-cai, CHEN Yun-qian, 2014: Emergency water supply capacity analysis of major cities in Hebei, Journal of Groundwater Science and Engineering, 2, 76-86.
    [16] Le SONG, Yan-pei CHENG, 2014: Optimization Research of Water-Soil Resources in Huanghua, Journal of Groundwater Science and Engineering, 2, 86-94.
    [17] Zhao Wang, Jiansheng Shi, Zhaoji Zhang, Yuhong Fei, 2013: Organic Contamination of Soil and Goundwater in the Piedimont Plain of the Taihang Mountains, Journal of Groundwater Science and Engineering, 1, 74-81.
    [18] Jin-cui Wang, Liang Zhu, Ying Zhang, Ji-chao Sun, 2013: Study on the Climatic Change Features of Hebei Plain, Journal of Groundwater Science and Engineering, 1, 68-74.
    [19] Feng-long Zhang, Fu-li Qi, Shou-cheng Lu, Yong-li Li, 2013: Analysis of the Water Factor with the Major Environmental Issues in the Sanjiang Plain, Journal of Groundwater Science and Engineering, 1, 28-32.
    [20] Guiling Wang, Wenjing Lin, Wei Zhang, Qi Fan, Qinghua Wu, 2013: Study on Movement Evolution Law of Soil Water in Condition of Agronomic Water Saving Irrigation, Journal of Groundwater Science and Engineering, 1, 33-45.
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