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为了提高马尾松人工林密度效应模型应用的精度，提出在不同立地条件，不同生长发育阶段的林木密度效应模型V＝α×Nβ1×Hβ2，式中α，β1，β2为参数，V为平均单林村积，N为林分每0．06hm2面积下的平均株数，H为林分优势木的平均高度；收集闽北地区马尾松人工林的样地资料进行研究，可得到令人满意的结果，文中还对模型进行生产弹性分析、边际产量分析，测定了马尾松人工林林分密度的生产弹性和边际产量，为森林经营活动提供科学依据．
In order to improve the accuracy of the application of the density-effect model of Pinus massoniana plantation, the tree density effect model V = α × Nβ1 × Hβ2 at different site conditions and different growth and development stages was proposed, where α, β1 and β2 are parameters and V is the average single Lin village product, N is the average number of trees per 0.06hm2 area of the forest, H is the average height of the dominant stand wood; to collect the North Fujian Masson pine plantations to study the data, satisfactory results can be obtained, In this paper, the model was also analyzed for production elasticity and marginal yield, and the production elasticity and marginal yield of Pinus massoniana plantation stand density were measured to provide a scientific basis for forest management activities.