Spatial distribution characteristics of soil nitrogen in an orchard in the urban agricultural region of Shanghai

Urban Farm DB summary

This study analyzed surface soil samples (0-20 cm depth) from a peach orchard in Nanhui, Shanghai, to understand the spatial distribution of soil nitrogen (TN, NO3-N, NH4-N). It found that NH4-N content varied more than NO3-N and TN, with TN and NH4-N variations being higher than NO3-N. Spatial correlation for these elements was moderately interdependent up to approximately 740 meters, with NO3-N and NH4-N showing patchy distributions and higher concentrations near the village, while TN had distinct high concentration areas in the east.