1) natural spruce-fir mixed stands
天然云冷杉林
1.
The paper has the natural spruce-fir mixed stands as the object of research, which is located in Jingouling forest farm, Wangqing forestry bureau, Jilin province.
从直径结构、大中小径级比例、树种组成、林分密度、林分平稳状态和择伐措施等方面对比分析,确定天然云冷杉针阔混交林理想的林分结构; 参照理想的林分结构,给现实天然云冷杉林生长状况划分不同的生长阶段,并分析林分各生长阶段所具有的结构特征。
2) Natural Spruce-fir
云冷杉天然林
4) semi-natural mixed larch-spruce-fir stands
近天然落叶松云冷杉林
1.
Soil organic carbon in semi-natural mixed larch-spruce-fir stands of northeastern China.
近天然落叶松云冷杉林土壤有机碳研究
5) semi-natural mixed forest of larch-spruce-fir
半天然落叶松云冷杉混交林
1.
The average mingling index of the semi-natural mixed forest of larch-spruce-fir is 0.
52,林木皆为团状分布;半天然落叶松云冷杉混交林的平均混交度为0。
6) spruce-fir forest
云冷杉林
1.
The T-square study on the spatial pattern of Spruce-fir forest in Jingouling Forest Farm shows that two spruce-fir forests are separately in aggregate distribution and random distribution.
用距离方法(T-square)研究金沟岭林场云冷杉过伐林的空间分布格局,经T形指数C和Z1值检验,2块云冷杉林分别为集聚分布和随机分布。
2.
Root biomass of broad-leaved Korean pine forest(BLKPF), spruce-fir forest(SF) and subalpine berch forest(SBF) in Changbai Mountain was studied in this paper.
对长白山阔叶红松林、云冷杉林和亚高山岳桦林根系生物量的研究结果表明：３种森林类型根系总生物量排列顺序为阔叶红松林＞云冷杉林＞岳桦林；同土层深度下，根系生物量大致上也有上述规律，但第Ⅱ层根系生物量为云冷杉林＞阔叶红松林＞岳桦林；３种森林类型的根系生物量占其地上生物量及其总生物量的比例随着海拔升高而增加；根系大部分集中在０～６０ｃｍ土层中。
3.
This paper took spruce-fir forests in over-logged forest region of Changbai Mountain as research object, adopted qualitative and quantitative research approaches, and then analysed environmental impact on regeneration, remained trees, soil, vegetation and so on caused b.
本文以长白山东部过伐林区云冷林为研究对象,根据汪清林业局云冷杉林的经营实践,采用定性和定量相结合的研究方法,在进行更新评价、采伐作业对保留木、幼苗幼树、土壤、水分、植被等生态环境影响分析的基础上,总结提出了对环境影响较小的采伐、集材、清林、更新技术。
补充资料：天然云冷杉林景观
天然云冷杉林景观
天然云冷杉林景观 邓坤枚摄
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条