通过对石灰岩中山区７种灌木枯落物调查，结合定位观测试验，查明了现有４种立地类型组上，枯落物厚度及其蓄积量，并建立了蓄积量的预测方程。对７种灌木枯落物水文作用的研究表明，７种灌木枯落物吸水率为其干重的２倍左右，其有效调蓄深１．１１～２．３７ｍｍ。径流小区对比试验进一步证明，枯落物具有明显的降低坡面上径流、泥沙的作用。 Through the investigation of seven shrub litters in the limestone mountainous area and the combination of the location observation test, the litter thickness and stock volume of the four existing site type groups were ascertained, and the prediction equation of the stock volume was established. The hydrological effects of seven shrub litters showed that the water absorption of the litter of seven shrubs was about 2 times of the dry weight, and its effective storage depth was 1.11-2.37 mm. Runoff plot contrast test further proves that litter has obvious role in reducing runoff and sediment on the slope.