| Rainwater resource is insufficient in loess area, scarce rainfall affects forestry production and ecological environment construction, how to find the most effective way of land use, effectively use water resources,maintain soil and water,improve the ecological environment purpose at the same time is the key to the construction of loess area. The paper focused on Caijiachuan basin in loess area of west of Shanxi province. By means of measuring soil physical properties of different types of land use, soil moisture infiltration, soil moisture evaporation, soil moisture content, studying soil moisture migration rule of different types of land use by the statistical methods,it tried to discuss the distribution of the different types of land use to soil moisture infiltration, and the influence to soil moisture evaporation.The results show that:1) soil water of the study area significantly changed with rainfall distribution, difference of soil moisture of different types of land use was remarkable, soil moisture status of farmland was the best;2) soil water infiltration process of different types of land use was quite variant, initial infiltration rate of Robinia pseudoacacia land was the fastest,9.75mm/min, second was Platycladus orientalis land,6.48mm/min, the last was shrub land,3.60mm/min;3) Upper slope of Robinia pseudoacacia and Pinus tabulaeformis land had the strongest soil moisture infiltration capacity. The steady infiltration rate of secondary forest land was the largest,followed by Robinia pseudoacacia and Platycladus orientalis land, steady infiltration rate of farmland was the lowest;4) forest made good inhibitory effect on soil moisture evaporation, the forest land had a smaller average daily evaporation than bare land. |
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