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研究立木生长过程和由其而划分的立木生长发育阶段,是制定森林经营措施和组织林业生产的重要依据之一。由于现存的天然长白松林极少,又属国家重点保护的珍稀树种,因此不能按需要索取供研究用的林木资料,致使其生长阶段方面的有关内容,至今仍然是一个空白。为了给经营管理现存天然长白松林提供所必需的基础依据,本文拟利用树干解析资料,对其生长阶段、不同阶段的年龄界限、生长量大小和林学意义进行初步探讨,仅供参考。
Studying the growth process of standing trees and standing growth stage of standing trees is one of the important bases for formulating forest management measures and organizing forestry production. Due to the small number of natural white pine forests existing and the rare species under the state’s key protection, it is impossible to obtain the forest-use data for research as required. As a result, the relevant aspects of its growth stage are still blank. In order to provide the necessary foundation for the management of the existing natural Pinus thunbergii forest, this paper intends to use the analytical data of the trunk to discuss its growth stages, age boundaries at different stages, the size of growth and the significance of forestry for reference purposes only.