Dynamics of biomass and productivity of three major plantation types in southern China Nitrogen acquisition strategies of Cunninghamia lanceolata at different ages Biomass relative growth rate of Machilus pauhoi in relation to leaf carbon, nitrogen, and phosphorus stoichiometry properties Biomass and its allocation characteristics of Eucalyptus urophylla × E. grandis plantations at different stand ages Allometric models of major tree species and forest biomass in Guangxi Biomass and Its Allocation in Pinus massoniana Plantation at Different Stand Ages in East Guangxi Carbon Storage and Its Distribution in Eucalyptus urophylla×E.grandis Plantations at Different Stand Ages