Abstract:

Soil organic carbon (SOC) content along the typical urbantransect in Shanghai were analyzed to indicate the effect of urbanization and industrialization on soil quality.Spatial variation structure and distributions of soil organic carbon content in the topsoil in the urbantransect were analyzed.The results showed that soil organic carbon content in topsoil were medium in variability,SOC in Xuhui district was distributed normally,while SOC in Minhang,Fengxian and the selected urbantransect were distributed lognormally.The results of semivariance analysis showed that SOC in Xuhui and Minhang districts were fit for the exponential model,SOC in Fengxian district and the selected urbantransect were fit for the spherical model.The spatial distribution maps of SOC content of the topsoil in this citytransect were produced by means of the universal Kriging interpolation.SOC in Xuhui and Minhang districts was spatially distributed in island,SOC in Fengxian district were distributed in ribbon,while the spatial distribution of SOC in the selected urbantransect showed the mixed characteristic of ribbon and island.Difference of soil organic carbon along “Urbansuburbanrural” was obviously.The special variation of SOC content in the topsoil were closely related to the industrialization,urbanization,application of fertilizer and agricultural management of the city