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/cm3

1.24 g/cm3

1.20 g/cm3 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 that 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.