中文摘要：

探讨草地凋落物对草地水文功能的影响，在内蒙古典型草原对不同放牧强度的草地凋落物的持水能力进行了测定。结果表明：随着放牧强度的增加，草地凋落物的持水量呈现先增加后降低的趋势，重度放牧下草地凋落物的持水量仅为108g／kg，比中度放牧区的持水量1971．57g／kg降低了95％，这是凋落物组成成分差异的结果，凋落物的吸水速率和浸泡时间的回归分析表明，二者之间具有明显的相关性，回归方程分别为：对照区：Y=738.1X^-0.656；轻度放牧区：Y=1569．3X^-0.665；中度放牧区：Y=2650X^-0.715；重度放牧区：Y=162．38X^0.563。

英文摘要：

This research conducted the offect of grassland lifter on the eco - hydrological functions experiment in different grazing intensities in a typical steppe of Inner Mongolia Autonomous. In order to probe the influence of grassland litter in the hydrological function, the hydrological characteristic parameters of grassland litter with the increase of grazing intensity had been tested, such as water holding capacity and the water absorption rate. The results showed that the water holding capacity of litter increased firstly, then decreased with the increase of the grazing intensity. The water holding capacity of litter was 108g/kg in the heavy grazing intensity, which decreased by 95%. Which was due to the components of litter comparing with grazing moderate, the results showed that the water absorption rate of litter has the significant relationshii3 with the immersed time, the regression equation were Y = 738. 1X^-0.656 （control） ;Y = 1569.3X^-0.665 （ light grazing） ; Y = 2650X^-0.715 （ moderate grazing） ; Y = 162.38X^-0.563 （heavy grazing）.