【摘要】 以抛物线型密度效应模型为前提 ,针对人工用材林生长系统的特点 ,用最优控制方法建模 ,以动态规划方法求解 ,导出最优密度控制模型。模型具有幂次数可变、适应性较强、疏伐间隔期可变和实际应用较方便等特点。模型在贵州马尾松人工用材林中的应用结果表明 ,模型计算结果符合人工用材林生长规律 ,并与实地试验吻合。表 2参 1更多还原

【Abstract】 Regarding the parabola density effect model as presupposition,in accordance with the growing traits of the planted timber forests,the paper finds density control model by optimal control method and finds the solution with dynamic programming.The model has the characteristics with variable power times,stronger adaptability,mobile thinning interval and convenient use.The model is used in masson pine planted timber forests in Guizhou Province.The outcome shows that the computing results tall with the growing law of the planted timber forests,and accord with practical experiment.更多还原