对江西大岗山林区常绿阔叶林、杉木人工林和毛竹林土壤的容重、孔隙度、持水量和贮水量等物理性质进行了研究。结果表明:(1)常绿阔叶林、毛竹林和杉木人工林的土壤容重均随深度的增加而增加。在0~80cm的土层中,杉木人工林、常绿阔叶林和毛竹林的土壤容重分别为1.29g/cm^3,1.24g/cm^3和1.20g/cm^3。(2)随土层深度的增加,3种林型土壤的总孔隙度、毛管孔隙度、饱和持水量和毛管持水量均逐渐降低。(3)在0~80cm的土层中,常绿阔叶林的土壤总孔隙度和非毛管孔隙度最大,毛竹林次之;而常绿阔叶林土壤的毛管孔隙度最小,毛竹林最大。(4)在0~80cm的土层中,3种林型土壤的饱和持水量、毛管持水量和非毛管持水量均为毛竹林〉常绿阔叶林〉杉木人工林。在0~80cm的土层中,3种林型土壤的现有贮水量和饱和贮水量均为常绿阔叶林〉杉木人工林〉毛竹林。(5)毛竹林在0~40cm土层中,土壤物理性质明显优于另外两种林分。
Research on soil bulk density, soil porosity, soil water retaining capacity and soil water storage of evergreen broad-leaved forest, Cunninghamia lanceolata and Phyllostachys pubescens stands was carried out in Dagangshan mountain in Jiangxi province. The results showed that: (1) The soil bulk density of three forest types increased with the increment of soil depth. In the layer of 0 - 80 cm, the soil bulk density of Cunninghamia lanceolata, Phyllostachys pubescens stands and evergreen broad-leaved forest was 1.29 g/cm^3, 1.24 g/cm^3, 1.20 g/cm^3 respectively. (2) With the increment of soil depth, total porosity, capillary porosity, saturated moisture capacity, capillary holding capacity decreased gradually. (3) In the layer of 0- 80 cm, the soil total and uncapillary porosity of evergreen broad-leaved forest was largest and chat of Phyllostachys pubescens stands was least. However, the soil capillary porosity of evergreen broad-leaved forest was lowest and that of Phyllostachys pubescens stands was highest. (4) In the layer of 0-80 cm, the order of soil saturated, capillary and uncapillary holding capacity on soil was Phyllostachys pubescens stands, evergreen broad-leaved forest and Cunninghamia lanceolata. In the layer of 0 - 80 cm, the sequence of soil present and saturated water storage was Phyllostachys pubescens stands, evergreen broad-leaved forest and Cunninghamia lanceolata. (5) In the layer of 0- 40 cm, the physical characteristics of Phyllostachys pubescens stands were obviously better than those of the other two.