Estimation of Soil Hydrodynamic Parameters Related to Agricultural Practices -Case of the Tougou Experimental Site （Burkina Faso）  

作　　者：Dial Niang Mahamadou Koita Amadou Keita Medogbe Christelle Manuela Houndayi Cheick Oumar Zoure Amagana Emmanuel Dara 

机构地区：[1]Department of Civil Engineering and Hydraulics. the International Institute for Water and Environmental Engineering, Laboratory of Hydrolog, v and Water Resources,Rue de la Science-BP 594 Ouagadougou 01, Burkina Faso

出　　处：《Journal of Environmental Science and Engineering(A)》2017年第10期527-534,共8页环境科学与工程（A）

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.

关 键 词：Agricultural practice unsaturated hydraulic conductivity SORPTIVITY SOIL Tougou Burkina Faso. 

分 类 号：TQ564[化学工程—炸药化工] S152.7[农业科学—土壤学]