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| DOI： |
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| Effects of Base Layout of the Monitoring Station on Soil Water Distribution |
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MAO Chengyang , JIAO Xiyun, SONG Guoqiang , LIU Kaihua , GUO Weihua
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College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China; State Key Laboratory of Hydrology-water Resourced and Hydraulic Engineering, Hohai University, Nanjing 210098, China; Flood Control and Drought Relief Headquarters Office of Hebei Province, Shijiazhuang 050011, China
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| Abstract: |
| In order to determine the suitable position for sensors, the concrete base, which was all 50 cm in length, width and height, was buried 50 cm below ground, and the modeling of the movement of soil water during the heading period of winter wheat in ecological test station of Nanpi in Hebei province was set up by Hydrus-2D. The volumetric water contents before and after inbuilt concrete base were calculated by Hydrus-2D, and the deviations caused by the concrete base under different conditions were also analyzed. The result showed that soil water content around the base was increased after the rain and reduced before irrigation. The deviation was notable at the depth of more than 70 cm after the rain and less than 80 cm before irrigation. The influence decreased with the increasing distance between monitoring points and the concrete base. The absolute value of water content deviations were less than 0.02 and the influence could be ignored at the profile 70 cm away from the concrete base. |
| Key words: soil moisture monitoring; soil water content; concrete base; sensors; numerical simulation |
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