在同一生长阶段上 ,林分价值随密度增加而上升 ,当密度增加到某一值时达到最高 ,尔后随立木密度的增加而下降 ,这种密度对林分价值的效应规律可用二次效应模型表示。以林分价值的密度二次效应模型为基础 ,采用连续状态的动态规划方法建立林分经营密度模型 ,符合人工林林分生长规律 ,可在林分密度控制和管理中推广应用 At the same growth stage, the stand value increased with the increase of density, reached the maximum when the density increased to a certain value, and then decreased with the increase of stand density. The effect law of stand density on the stand value could be expressed by the quadratic effect model Said. Based on the secondary effect model of the stand value, dynamic model of continuous plantation was used to establish the model of stand management density, which accords with the rule of plantation stand growth and can be applied in stand density control and management