方山林场森林资源结构动态分析与经营对策

Dynamic Analysis and Management Countermeasure of Forest Resource Structure in Fangshan Forest Farm

利用方山林场 196 0年与 1994年两期的林相图和二类调查数据资料 ,对该林场 34年来的土地利用结构、林分起源结构、优势林分结构、龄组结构、蓄积量结构、森林生产力进行了动态分析。结果表明 ,该林场除土地利用结构趋近合理外 ,森林资源一系列内在结构均遭到严重破坏 ,已发展到全面危机状态。并从调整结构入手 ,提出了相应的调整指标及森林经营措施 ,以期恢复林场合理的森林结构 ,实现森林资源三大效益的良性循环。

The structures for land utilization, forest stand’s origin, dominant forest stand, forest stand’s age, volume and forest’s productivity were dynamically analyzed with the help of the forest maps and forest management survey data of Fangshan Forest Farm in 1960 and 1994. The results show that in addition to the structure of land utilization, a series of inner structures of forest resources has been seriously destroyed to a critical situation. In order to restore the reasonable structure of forest resources and achieve the good cycle of three benefits for forest resources, the corresponding regulation index and forest management measures were put forward.