Influences of Removal of Litter and Trampling on the Surface Soil in Planting Sites of City Parks

Abstract

This investigation was carried out in order to clarify the influences of removal of litter and trampling on the properties of surface soil and the growth of Castanopsis cuspidata var. sieboldii in six city parks of Tokyo.
1. In the investigated sites from where the litter had been carried away, the surface soil had smaller percentage of total carbon and nitrogen than the others.The percentage of total carbon in the soil correlated to solid phase ratio negatively, but it positively correlated to maximum water holding capacity and fine porosity. 2. In the investigated sites where had been under the influence of trampling the surface soil had smaller minimum air capacity, coarse porosity and satulated water permeability than the others. 3. C. cuspidata showed the different values of indices of vitality and they were related to percentage of total carbon and solid phase ratio in surface soil.