采用分层切割法对不同年龄马尾松人工林的生物量进行研究。根据各径级标准木生物量建立回归方程，估算不同年龄马尾松林分各器官生物量。同时还比较了不同年龄林分生物量结构和生产力。马尾松林的生物量随着年龄的增大而增大，净生产力随着年龄增大而呈抛物线状态 Stratified cutting method was used to study the biomass of Pinus massoniana plantations at different ages. The regression equation was established according to the standard wood biomass of each diameter scale to estimate the biomass of each organ of Pinus massoniana stand at different ages. At the same time, the biomass structure and productivity of different ages were compared. The mass of Pinus massoniana forest increases with age and the net productivity parabolically increases with age