摘要
东北东部山地樟子松人工林生产力水平差异较大,立地指数跨越9个等级,立地指数不同,生长差异很大。东北东部山区30~36 a左右樟子松人工林,林木胸径和树高生长一般可划为3个时期,即生长初期,速生期和平缓生长期,其中速生期还可以分两个生长阶段,即快速生长阶段和稳定生长阶段。树高速生期出现早但持续期短;直径速生期出现较早且持续期长;材积则只出现生长初期和速生期两个时期,材积速生期出现晚,在本文研究的年龄段内未出现材积下降趋势。
The productivity of Pinus sylvestris var. mongolica plantations（ MSP） in eastern mountain area of Northeast China varied considerably under different site indexes that spanned over 9 levels. For the 30- 36 years old of MSP,the diameter and height growth period could be divided into 3 periods,i. e. primary growth period,fast-growing period,and steady growth period,in which the fast-growing period could further be divided into 2 stages of rapid and stable growth; while the volume growth could just be divided into 2 periods,i. e.,primary and fast growth period. The fast growth period of tree height came earlier with relatively short duration,and the fast growth period of diameter also came earlier but with long duration; while the fast growth period of volume came late and no decreasing trend was found in the stand age range of this paper.
出处
《森林工程》
2016年第3期16-20,26,共6页
Forest Engineering
基金
黑龙江省科技计划项目(GA09B202)
关键词
樟子松
人工林
生长过程
生长阶段
立地指数
Pinus sylvestris var.mongolica
plantation
growth rhythm
growth stage
site index
