作　　者： (敖特根其木格）; (秦富仓）; (周佳宁）; (杨振奇）; (周美超）; (牛晓乐）;

机构地区： 内蒙古农业大学沙漠治理学院,内蒙古呼和浩特010010

出　　处： 《水土保持通报》 2017年第4期114-118,共5页

摘　　要： [目的]探讨多伦县不同林分类型的枯落物持水性能差异,为该区森林土壤持水性能提供基础数据理论。[方法]以内蒙古自治区锡林浩特市多伦县为研究区,选取代表性的10块林地,收集林地地表枯落物,测定其现存量、持水性能及拦蓄能力等,旨在分析不同林分类型下枯落物持水性能的差异及其对表层土壤(0—20cm)含水率的影响。[结果](1)乔木林的枯落物现存量、持水能力和拦蓄能力均高于灌木林。(2)天然林的枯落物现存量、持水能力和拦蓄能力均高于人工林。(3)各林地枯落物厚度显著影响表层土壤的含水率,即枯落层越厚,表层土壤含水率越高。[结论]由于树种组成、年龄、林分密度及立地条件的影响,不同林分类型的持水能力差异较大,但变化规律为基本一致,同时,林地对土壤水分的影响高于草地。 [Objective] To investigate the difference of water holding capacity of litters in different stand types in Duolun County, and to provide basic data and relevant theory for forest soil water holding capacity in this area. [Methods] Duolun County in Xilinhaote City of Inner Mongolia was taken as the study area, in which 10 representative sites of woodland were selected. Weight of forest litter, water holding capacity and storage capacity were measured to analyze the differences of water holding capacity of litter among different forest types, the effect on moisture content as well. [Results] （1） Forest litter amount, water holding capacity and storage capacity were all higher than that of shrub. （2） The natural forest litter amount, water holding capacity and storage capacity were higher than the corresponding values of artificial forest. （3） The litter thickness significantly affected the water content of the surface soil, i. e. , the thicker the litter layer, the higher the surface soil moisture content was. [Conclusion] Because of the influences of tree species composition, age, stand density and site conditions, the water holding capacity of different stand types varied greatly, but the change was basically the same. The influence of forest land on soil moisture was higher than that of grassland.

关 键 词： 林地 枯落物层 持水能力 拦蓄能力