我国红松大径级用材林近自然培育探讨

红松是地带性森林植被阔叶红松林的建群种,其木材力学强度适中,纹理通直,花纹美观,材质强韧,不易开裂、变形,耐腐朽力强,为我国珍贵用材树种.通过近自然经营可以达到低成本培育大径材近自然林的目的.文中分析了我国红松大径材林培育现状及存在问题,并从红松的生物和生态学特性、木材利用价值方面阐述了大径级用材林近自然培育的适用性,...

Discussions on Close-to-Nature Silviculture of Pinus koraiensis Stand for Large-diameter Timber in China

Pinus koraiensis is a constructive species of broadleaved Korean pine mixed forests which serves as zonal forest vegetation, and also a precious timber species in China, which is characterized with moderate mechanical strength, straight texture, beautiful pattern and tough material, hard to crack and deform, and strong resistance to decay. Close-to-nature management is a way to achieve the goal of cultivating the close-to-nature forests at a low cost for large-diameter timber. Based on the analysis of the current status and existing problems of P. koraiensis large-diameter timber cultivation, this paper elaborates the applicability of close-to-nature silviculture of large-diameter timber forest in terms of bio-ecological characteristics and wood use value, and proposes the applicable close-to-nature silviculture technique, including principles, target tree selection time, large-diameter target tree selection technology, target tree density, method to determine the disturbing tree, and the determination of provenance and the site conditions. This study is aimed to provide an effective way to increase the stock of high-quality large-diameter timber and meet the needs of the country.