Abstract:

In order to investigate the effects of land utilization types on soil physical and chemical properties in suburban area, seven kinds of different land utilization types (secondary forestland, economic forestland, artificial forestlands, deforestedland, abandoned farmland, nursery garden, slope farm land) in suburban area of Changsha City were chosen for studying. The results showed that the soil particle mainly concentrated in (1.00~0.05 mm and <0.001 mm) two granulation scales, soil texture was light clay and heave loam. The content of soil sand (1.00~0.05 mm) and soil silt (0.05~0.01 mm) decreased, while that of soil clay (<0.01 mm) increased with the decreased of human disturbance. Soil density in slope farm land, nursery garden, abandoned farmland and deforestedland was higher than that in woodland, such as secondary forestland, economic forestland, artificial forestlands, however soil porosity and soil water content in the woodlands were universally higher. Soil pH value, organic matter content and nutrient content were higher generally in the natural or seminatural woodland (secondary forestland, economic forestland, artificial forestlands) than that in slope farm land, nursery garden, abandoned farmland and deforestedland