Abstract:Soil samples in the profile of 0-20 cm, 20-40 cm, 40-60 cm, 60-80 cm and 80-100 cm were collected from forty-four sites in Daxin district, Beijing. Landuse of these sampling sites can be identified as farmland, vegetable land, orchard, grass land and forest. Along the soil depth, soil organic matter (OM), Olsen P, total P, NO3-N and total N decreased and the soil pH increased with the most obvious changes observed at the depth of 20-40 cm. Landuse pattern, especially vegetable growth, significantly affected the surface soil properties. The SOM, Olsen-P, total P, NO3-N and total N were much higher in the surface soils (0-20 cm) from vegetable land than in the other soils. The soil pH for vegetable land was 8.27 compared to the value of 8.01 for the other soils. The difference in soil properties in the deep layer was less affected by the landuse pattern. The content of NO3-N in the soil profile followed the order: vegetable land > farmland, orchard, forest> grass land. Even in the depth of 80-100 cm, the NO3-N of vegetable land was 18.8 mg kg-1, as much as 175%-389% the other landuse soils in this layer. The distribution of P in the soil profile was different from that of N. The olsen P was mainly accumulated in the soil of 0-20 cm layer. Significant differences in olsen P were observed among the landuses.. In the 40-60 cm layer, the Olsen-P in vegetable land soils was as much as 161%-602% the other landuse soil. Such differences were not obvious in the 80-100 cm depth This study indictes that exceeding fertilizer application leads to the accumulation of N and P in the vegetable land soil. They were transported as the forms of NO3-N and Olsen-P to the deeper layers of the soils. Multiple regression analysis showed a linear correlation between the Olsen-P and the total P in different soil profiles. However, no significant correlation existed between the soil OM and total P. The content of NO3-N had linear correlation with the pH, OM and total N.