Abstract: The project of artificial Pumica granatum stand located at the hilly region of Taihang Mountain was investigated. The results suggested that soil bulk density in topsoil (0—20 cm) under different land use types followed the order that Pumica granatum stand in valley (1.16 g/cm3）﹤Pumica granatum stand in middle slope（1.27 g/cm3）﹤terraced field in valley（1.30 g/cm3）﹤grassland in middle slope (1.32 g/cm3). The soil bulk density in middle slope was higher than that in the valley. There was no significant difference in the soil bulk densities of plough layers (0-20) in terraced field, grassland and Pumica granatum stand. Pumica granatum stand in valley had the lowest soil bulk density (1.32 g/cm3), while grassland in middle slope had the highest soil bulk density (1.56g/cm3). The soil bulk density of deep soil (40-60cm) at the same slope position showed no significant difference. Soil bulk density increased with the increase of soil depth. But the soil bulk densities of terraced field in valley and grassland in middle slope reached their lowest value at the 10-20cm layer. The soil bulk densities of 0-5cm layer and 10-20cm layer showed moderate spatial variability statistically, while that of other soil layers showed smaller spatial variability. This paper only probed the spatial variability characteristics originated from land use types and slope positions. Other factors that caused spatial variability need further investigation.