摘要
以塞罕坝机械林场内的落叶松为研究对象,依靠北京林业大学、河北农业大学的科研和技术支持,开展了对落叶松大径级材培育的研究。通过对试验地进行下层疏伐、采伐强度、天然更新的具体措施,分析了不同保留密度下单株及林分年生长量、林分年生长率以及林分的木材品质。结果表明,培育复层林,增加生物多样性,培育大径材的合理密度应在225～525株/hm2之间。
Larch （Larix gmelinii） of Saihanba Forestland was used as the research object,and a big- diameter larch timber cultivation research was conducted relying on scientific researches and technical supports by Beijing Forestry University and the Hebei agricultural university. Based on the test of low thinning, cutting intensity, natural regeneration of specific mea- sures, the effects of different reserve densities on single plant, its annual growth, stand year growth rate, and forest wood quality were analysed. The results showed that a reasonable density is supposed to be between 225 - 525 plants/hectare to train re -storied forests,increase biodiversity, and foster big-diameter timber.
出处
《河北林果研究》
2011年第4期361-364,共4页
Hebei Journal of Forestry and Orchard Research
基金
冀北山区典型森林生态系统健康经营技术研究及示范(200804022F)
关键词
落叶松
低密度
大径级材
larch
low density
large diameter class wood
