Neighborhood Comparison Study on Schima superba Pure Plantation by Different Variable

The spatial structure of the pure Schima superba plantation in Pushang National Forest Farm of Shunchang County,Fujian Province was studied by means of neighborhood comparison analysis by taking DBH,tree height,biomass and standing volume as variables.The results showed that the neighborhood comparisons measured by DBH,standing volume and biomass showed normal parabola distribution with moderate symmetrical axle,while the neighborhood comparison measured by tree height appeared to be parabola distribution with right deflecion.The correlation of neighborhood comparisons measured by DBH and biomass was up to extremely significant level,and the correlation of neighborhood comparisons measured by the tree height and DBH(including the biomass) was not significant.The average neighborhood comparison of community was basically equal,which showed that the degree of differentiation measured by DBH,tree height and biomass was basically consistent in the pure Schima superba plantation community.