Effect of forest rehabilitation on soil moisture change at Sakaerat Environmental Research Station, King Amphoe Wang Nam Khiew, Changwat Nakhon Ratchasima
1995
Somkiat Uyprasert
Study on soil moisture change, measurement of soil by Neutron Probe was studied last week of month from January to December 1994. In six areas namely, Dry Evergreen Forest, Dry Dipterocarp Forest, Forest Plantation, Succession Plantation, Rehabilitation Plantation and Shifting Cultivation. The levels of measurement were taken at the surface (5 cm), 20, 40, 60, 80 and 100 cm of soil depth. The results found that moisture content of all areas were very high soil moisture at the surface soil and the lower depths, quite decreased at 20 cm of soil depth and increased with soil depths except Dry Dipterocarp Forest and Succession Plantation decreased with soil depths when the soil depths were more than 40 and 80 cm respectively. As comparing soil moisture of the soil profile found that the surface soil had assimilation and more different with soil depths because the soil property of surface soil and nearly had assimilation, for lower depths were different of root, soil porosity, maximum water holding capacity and clay. The soil moisture content of Rehabilitation Plantation, Shifting Cultivation, Dry Dipterocarp Forest, Dry Evergreen Forest, Forest Plantation and Succession Plantation were about 0.24, 0.23, 0.20, 0.17, 0.17 and 0.16 cm per 1 cm of soil depth respectively. For Shifting Cultivation had very high soil moisture content, but low infiltration capacity with high quantity of surface runoff.
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