| Soil water properties in a slope of different land use in the wind-water erosion crisscross region on the Loess Plateau |
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| DOI：10.7606/j.issn.1000-7601.2009.01.24 |
| Key Words: wind-water erosion crisscross region land use specific water capacity soil water availability |
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| Abstract: |
| Different land use has an important effect on soil moisture and soil quality.In order to describe the differences and features of soil water characteristics on a slope-land under different land uses,a research on soil water characteristics of farmland,woodland and grassland was carried out in the Wind-water Erosion Crisscross region.The results showed that:(1) the capacity of soil water retention and supply of alfalfas was the best,then almonds,and then stipa bungeana,and the capacity of millets was the worst;(2) in the region the field capacities(FC) corresponded to soil moisture content with soil matrix potential of -0.2×105 Pa,the permanent wilting points(PWP) corresponded to soil moisture content with soil matric potential lower than -2.0×105 Pa;(3) the available water of alfalfas was the greatest,the available water of millets was the least,and the increase of the available water of alfalfas can be attributed to the increase of slowly available water;(4) the specific water capacity decreased quickly with soil moisture content around FC,while it retained relatively constant in 50%～60% of FC. |
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