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对于云勇林场的水源涵养林、风景林和水土保持林的凋落物的储量、持水量、持水率和吸水速率进行了研究。结果表明,水源涵养林的凋落物的干重(2.11thm-2)最大,其次是风景林(2.05thm-2),而水土保持林较小(1.43thm-2)。各林分凋落物的持水量呈现水源涵养林>风景林>水土保持林,最大持水量为水源涵养林6.65thm-2,风景林5.16thm-2,水土保持林4.17thm-2。水源涵养林、风景林和水土保持林最大持水率分别为417%、352%和288%。凋落物持水量和凋落物持水率随着浸泡时间的增加按照对数方程增加。3种林分中水源涵养林的凋落物吸水速率在各浸泡时间后居首位,水土保持林中等,风景林最小,各林分的凋落物的吸水速率随浸泡时间的增长按方程W=a·t-b下降。
The reserves, water holding capacity, water holding rate and water absorption rate of litterfalls in landscape forest and soil and water conservation forest in Yunyong Forest Farm were studied. The results showed that the litter weight of water conservation forest was the highest (2.11thm-2), followed by the scenic forest (2.05thm-2), while the soil conservation forest was smaller (1.43thm-2). The water holding capacity of litters in various stands showed water conservation forest> scenic forest> soil and water conservation forest. The maximum water holding capacity was 6.65thm-2 for water conservation forest, 5.16thm-2 for scenic forest and 4.17thm-2 for soil and water conservation forest. The maximum water holding rates of water conservation forests, scenic forests and soil and water conservation forests are 417%, 352% and 288% respectively. Water retention of litter and litter retention increased with logarithmic equation as the soaking time increased. The water absorption rate of litter in the water conservation forest was the highest among all the three stands after each soaking time. The water and soil conservation forest was the middle and the scenery forest was the smallest. The water absorption rate of litter in each forest increased with the soaking time according to the equation W = a · Tb decline.