论文部分内容阅读
应用典型调查与定位试验相结合的方法 ,探讨了黑松海防林低产低质低效的形成原因 ,据其成因将这些林分划分为 5种类型 ,提出了相应的改造意见 ,并编制出黑松海防林密度管理表。通过更新造林和抚育技术试验 ,提出了较合理的更新方式 ,主要有林冠下更新造林、留伐桩萌芽更新、隔行更新造林、人工促进天然更新、带状更新等 ,其中 ,带状更新适于在林分条件相对较好的情况下应用 ,其它几种更新方式较适于低效林的更新改造 ;采用稀疏林补植、林下种植灌木或绿肥压青、封禁保护枯落物等技术 ,可有效地改善林分状况。
Based on the combination of typical investigation and location test, the reasons for the low yield, low quality and low efficiency of Pinus thunbergii forest were discussed. According to their causes, the forest types were divided into five types, and the corresponding suggestions were put forward and the black Pine sea forest density management table. According to the experiments of reforestation and tending technology, some reasonable updating methods are put forward, including reforestation under canopy, sprout regeneration of post-harvesting pile, reforestation of interlacing, natural regeneration and strip renewal, among which, In the case of relatively good stand conditions, several other updates are more suitable for the renovation of inefficient forests; using sparse forest replanting, understory planting shrubs or green manure green, blocking and protection of litter and other technologies can be effective To improve the status of the forest.