杉木人工林经营过程最优控制研究

Research into Optimum Control during the Management for Chinese Fir Plantation

本文以林分生长模型为基础，将林分蓄积量年平均生长量作为目标函数，应用三次设计的方法建立杉木人工林经营过程控制系统，以辅杉木人工林造林设计及其经营过程的最优决策管理．利用此控制系统只需输入立地指数（ｓ）即可对杉木人工林在该立地条件下的最佳初植密度、间伐次数、间伐时间、间伐强度和主伐年龄进行最优决策．该控制系统既可对杉木人工林林分进行生长预测，也可为制定经营方案提供参考依据．

Based on the stand growth models, using the methods of three designs, a control system of Chinese fir plantation-which objective function was annual meam volume increment-was built not only to predict growth of Chinese fir plantation but also to provide basis for management plans establishing, which could assist to make optimum decision during silvicultural design and Chinese fir plantation management such as the optimum of planting density, thinning age, thinning times, thinning intensity and cutting age could be obtained by only inputting site index.