Studies on the Biomass and Productivity of Typical Shrubs in Taiyue Mountain,Shanxi Province

The biomasses and productivities of three typical shrubs,such as Corylus hrterophylla,Ostryopsis davidiana and Rosa xanthina in Taiyue mountain,Shanxi Province,were investigated with harvest method.The results show that the total biomasses of the three shrubs were 54.3,43.4 and 35.7 t·hm-2,and the shrub layer aboveground mean productivities of the three shrubs were 4.0,4.7 and 4.1 t·hm-2 ·a-1,respectively.The biomasses of shrub layer,herb layer and litter layer accounted for 75.7%,9.9% and 14.4% in Corylus hrterophylla community,80.3%,8.7% and 11.0% in Ostryopsis davidiana community,and 76.7%,11.0% and 12.3% in Rosa xanthina community. In the three shrub communities,the aboveground were accounted for 32.7%,30.6% and 34.7% of the living biomass,and 67.3%,69.4% and 65.3% were contributed by the roots.The components of biomass were much different to the arbor forest in the same area.The results of the shrub relative growth study show that the total,stem and leaf biomass are closely correlated with the basic diameter and the height (D 2H),and the equation W=a(D 2H) b is also very suitable for all the investigated shrub species.