在不同植被类型条件下陇东地区雨季土壤水分的消退规律

A study on the depletion rule of soil water in rainy season

本文采用土壤含水量消退系数指标,对15个观测点的雨季土壤水分动态过程进行了计算分析,得出了消退系数的经验方程。研究结果可用于定量地评价该地区的植被、地形地貌、造林整地措施在雨季对各层土壤耗水能力的影响和预报雨季土壤含水量变化,还可用于定量地开展水土流失规律和水土保持效益研究。

Using an index of depletion coefficient of soil water,the dynamic processes of soil water at 15 plots in rainy season is analysed, and the empirical equations with depletion coefficient are derived.The results could be used to quantitatively evaluate the effects of vegetation, landforms, plantation measures on the depletion of soil water in rainy season of each year,and to estimate the rules of soil and water loss and the benefit of their conservation.