Biomass of evergreen broad-leaved forest in Tiantong National Forest Park,Zhejiang Province (I) Community structure and fresh weight biomass of main tree species

This study was carried out in the evergreen broad-leaved forest of Tiantong National Forest Park,Zhejiang Province.All the trees in quadrats established in the forest were identified and measured to quantify the community structure of the forest.On this basis,the biomass of the community and its main tree species were measured and analyzed,and the relations between various organ biomass of tree,tree height and diameter at breast were obtained by the method of correlation analysis,the mathematics models for every organ of main species had been established.The results showed that Schima superba and Castanopsis carlesii were the dominant species in the community and constituted the main tree species with Lithocarpus glaber,Castanopsis fargesii and Castanea gracilis.The community biomass was mostly composed of main species biomass in every layer,the biomass of Castanopsis carlesii and Schima superba was respectively dominant in the tree layer which was the main component of the whole biomass.The order of biomass of various organs in the tree and shrub layer was trunkbranchleaf.[Ch,2 fig.3 tab.17 ref.]