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对三峡库区的连峡河小流域不同林分林下凋落物数量及其最大持水量和吸水速率等水文特征参数进行了分析与研究,结果表明,凋落物数量针阔混交林> 柏木林> 马尾松林> 针叶混交林> 阔叶林> 灌木林。各个森林类型的林下凋落物的未分解层的最大持水量柏木林> 针叶混交林> 灌木林> 针阔混交林>阔叶林> 马尾松林。各个森林类型的林下凋落物的半分解层的最大持水量马尾松林> 针阔混交林>柏木林>针叶混交林> 阔叶林> 灌木林。在该区中柏木林的林下凋落物的持水能力最大,其余依次是针叶混交林、针阔混交林、马尾松林、阔叶林和灌木林。在只有凋落物覆盖的情况下,不出现水分下渗和地表径流时的最大降水量及最大降水强度各种林分是不同的。
The quantity of forest litter, the maximum water holding capacity and water absorption rate under different hydrological conditions in the Three Gorges Reservoir area were analyzed and studied. The results showed that the number of litter and mixed forest> Cypress> Masson pine forest> coniferous mixed forest> broadleaf forest> shrubbery. The maximum water holding capacity of undecomposed layer of litter in different types of forest was in the order of coniferous forest> coniferous mixed forest> shrub forest> mixed coniferous and broad leaf forest> broadleaf forest> masson pine forest. Pinus massoniana> coniferous and broadleaf mixed forest> Cypress forest> coniferous mixed forest> broadleaf forest> shrub forest. In this area, the water holding capacity of litter under the forest is the largest, followed by coniferous mixed forest, mixed coniferous forest, masson pine forest, broad-leaved forest and shrub forest. In the case of litter alone, the maximum precipitation and the maximum precipitation intensity when water infiltration and surface runoff did not occur varied among the different stands.