Effects of land use and soil type on selected soil fertility quality indicators
利用方式和土壤类型对土壤肥力质量指标的影响

The differences of some soil fertility quality indicators between three soil types (quaternary red clay, red loam soil and red sandstone soil), four land use types (Forestry land, Orchard, Tea garden and upland) and two soil horizons (0 15 cm and 15 30 cm) were compared in this paper. The results showed that most of selected soil fertility quality indicators were closely related to soil type, land use type and soil horizon. Among them, contents of clay, >0.25 mm dry aggregates, >5 mm dry aggregates, >0.25 mm water stable aggregates, and CEC were mainly related to soil type, and total P, available P, available K, exchangeable acidity and pH were mainly controlled by land use. Soil bulk density, saturated hydraulic conductivity, organic C, total N, available N and root content were related to both land use and soil type. The difference of clay, bulk density, saturated hydraulic conductivity, organic C, total N, total P, available N, P, and K and pH was significant between surface and subsurface horizons.