【摘要】 以林龄、地位指数、林分密度指数为自变量因子，由扩展的Ｒｉｃｈａｒｄｓ 生长函数结合林分直径分布规律，建立直径的生长模型，运用改进单纯形法最优拟合该生长模型，以此作为基础推算其它因子，编制出福建省马尾松人工林可变密度收获表，为福建省马尾松人工林的经营管理提供了理论依据更多还原

【Abstract】 Based on the generalized Richards growth model combined with the stand DBH distribution,the DBH growth model was established by regarding age of stand,site index and density index as the factors of independent variable.The application of optimum fitting the DBH growth model by modified simplex method leads to reckon other factors,which establish for the variable density yield table of the Pinus massoniana plantation in Fujian province.The results of analysis present that the table will be proved theoretical basis of practical guidance of management for the Pinus massoniana plantation in Fujian.更多还原