延安丘陵沟壑区坡面果园土壤水库特征

Characteristics of Slope-Orchard Soil Reservoir in Yanan Loess Hilly Region

测定了坡面果园土壤水库特征曲线;借助黄土高原丘陵沟壑区坡面果园土壤水分长期定位观测,分析了坡面果园土壤水库的调节深度受坡向影响,其中阴坡调节深度大于阳坡;土壤水库来水受土壤入渗的影响,耗水受蒸发的影响,表现出一定的季节性。

Soil reservoir in loess plateau has enormous practical significance in unitizing the water resources efficiently and recovery of vegetation rapidly and ensuring the sustainable development of ecological environment in the loess plateau region. The thesis measured the characteristic curve of soil reservoir in slope, analyzed the influence of slope directions on slope orchard soil reservoir regulation depth on basis of through long-term observations of soil moisture and the regulation depth in night-side are more than sunnyside. Finally, the intake water are influenced by soil infiltration. Moisture depletion are influenced by evaporation of water and both of them behaved seasonal change.