【摘要】 对庐山自然保护区内6种主要森林植被下枯枝落叶累积量及其吸水量和土壤物理性质、土壤水分的入渗性能进行测定分析。结果表明,该自然保护区森林枯枝落叶层平均累积量为18.67 t/hm2,其平均最大净吸水量为35.75 t/hm2,相当于3.58 mm的降雨深度,说明其森林枯枝落叶层涵养水源功能较为显著。6种森林植被下土壤容重的大小顺序为黄山松>玉山毛竹>茅栗、白辛树>青岗栎、化香>山毛榉>马尾松;土壤非毛管孔隙度的大小顺序为马尾松>茅栗、白辛树>山毛榉>玉山毛竹>黄山松>青岗栎、化香;马尾松林下土壤硬度最小,而土壤毛管孔隙度最大;从土壤水分的入渗性能来看,马尾松林涵养水源和理水调洪的功能要远大于其他林地类型,玉山毛竹林地最差。更多还原

【Abstract】 The litter accumulation and its water absorbing capacity(WAC) of six forest vegetations as well as the physical property and water permeability of soil in Lushan nature reserve were determined.As indicated by the results,the average litter accumulation was 18.67 t/hm2,and its average maximum net WAC was 18.67 t/hm2,equivalent to the precipitation depth of one rainfall process 3.58 mm,indicating that the water-holding function of the forest litter layer was significant.The order of soil bulk density under 6 kinds of forest vegetation could be seen easily: Pinus taiwanensis> Yushan Phyllostachys heterocycla(Carr.) > Castanea seguinii Dode and Pterostyrax psilophyllus > Cyclobalanopsis glauca,Platycarya strobilacea Sieb.et Zucc.> Fagus> Pinus massoniana;soli non-capillary porosity decreased as Pinus massoniana> Castanea seguinii Dode and Pterostyrax psilophyllus > Fagus > Yushan Phyllostachys heterocycla(Carr.)> Pinus massoniana > Cyclobalanopsis glauca and Platycarya strobilacea Sieb.et Zucc.;Pinus massoniana forest’s soil hardness was the smallest while its soil minimum capillary porosity was the largest;from the aspect of soil water permeability,the water-holding capacity and flood regulation function of Pinus massoniana were obviously stronger than other forest types,and that of Yushan Phyllostachys heterocycla(Carr.) was the worst.更多还原