Estimation of Soil Hydrodynamic Parameters Related to Agricultural Practices -Case of the Tougou Experimental Site （Burkina Faso）
Estimation of Soil Hydrodynamic Parameters Related to Agricultural Practices -Case of the Tougou Experimental Site （Burkina Faso）作者机构：Department of Civil Engineering and Hydraulics. the International Institute for Water and Environmental Engineering Laboratory of Hydrolog v and Water ResourcesRue de la Science-BP 594 Ouagadougou 01 Burkina Faso
出 版 物：《Journal of Environmental Science and Engineering(A)》 (环境科学与工程（A）)
年 卷 期：2017年第6卷第10期
页 面：527-534页
学科分类：082604[工学-军事化学与烟火技术] 08[工学] 09[农学] 0826[工学-兵器科学与技术] 0903[农学-农业资源与环境] 090301[农学-土壤学]
主 题：Agricultural practice unsaturated hydraulic conductivity sorptivity soil Tougou Burkina Faso.
摘 要：This study aims to estimate the hydrodynamic properties of soils under various agricultural practices in the Tougou catchment in northern Burkina Faso. The methodology adopted is based on the determination of the unsaturated hydraulic conductivity and capillary sorptivity close to saturation. This method relies on the measurement of the transient infiltration flux at the soil surface with imposed hydraulic head varying from -60 to -20 mm. These tests are carried out on control, stony line, half-moon and zai plots. The results show a difference in hydrodynamic parameters according to the agricultural practices. The unsaturated hydraulic conductivity is 33.1 cm/h, 13.1 cm/h, 20.3 cm/h and 4.0 cm/h for zai, control, stony line and half-moon plots respectively. The unsaturated hydraulic conductivity is 33.1 cm/h, 13.1 cm/h, 20.3 cm/h and 4.0 cm/h for zai, control, stony line and half-moon plots respectively. The pores participating to water transfer also differ. The mean size of drainable pores is 43.7, 56.2, 22.3 and 87.2 pm on control, stony line, half-moon and zai plots respectively.
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