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。
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。
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。
Analysis on the environmental property of Picea asperata stand through four mathematical methods;
应用4种数学方法对暗针叶云杉林分生境属性的研究
Study on Structure and Adjustment of Larch and Spruce-Fir Stands;
落叶松云冷杉林结构特征及调整研究
Soil Nutrient Characteristics of Semi-natural Mixed Larch-spruce-fir Stands in Northeast China
近天然落叶松云冷杉林土壤养分特征
Inpidual Tree Height-diameter Curves of Larch-spruce-fir Forests
落叶松云冷杉林单木树高曲线的研究
Study on persity and stability of stand types of Picea-abies forests in Taohe forest region
洮河林区云冷杉林分类型多样性及稳定性研究
Analysis on Natural Regeneration of Spruce-Fir Mixed Stands and Seedlings Characteristics of Changbai Mountains;
长白山林区天然云冷杉林更新及幼树特征分析
Soil Properties and Growth of Spruce-fir Forest in Xiaoxing'an Mountains
小兴安岭林区云冷杉林生长状况与土壤性质
Health Evaluation on Spruce and Fir Forests in Miyaluo of the Western Sichuan
川西米亚罗林区云冷杉林健康状况评价
Study on Ecological Logging and Regeneration Techniques for Spruce-Fir Forests in Changbai Mountain;
长白山云冷杉林生态采伐更新技术研究
Dynamics of Forest Succession and Restoration Strategies for Degraded Spruce-fir Forest in Changbai Mountain
长白山退化云冷杉林演替动态及恢复研究
Soil enzymes activities and soil nutrient of Picea and Abies forest
云冷杉林土壤酶活性与土壤养分的研究
Coarse Woody Debris(CWD) in a Spruce-fir Valley Forest in Xiao Hinggan Mountains,China
小兴安岭谷地云冷杉林粗木质残体的研究
Plant Important Value In Subalpine Spruce And Fir Forest In The North Slope Of Changbai Mountain
长白山北坡亚高山云冷杉林植物种类的重要值
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
Plant Composing In Subalpine Spruce And Fir Forest In The North Slope Of Changbai Mountain
长白山北坡亚高山云冷杉林的植物种类组成
Picea and Abies pollen percentages are more than 20[WTB3]%[WTBZ] in Picea or Abies forest and less than 5[WTB3]%[WTBZ] where Picea or Abies trees absent.
云、冷杉林中云杉、冷杉花粉高于20%,无云杉植物存在时云、冷杉花粉低于5%;
The Examples of picea and Abies Forest Structure in Taohe County,Gansu Province
甘肃省洮河林区云、冷杉林分结构实例
Spatial structure of mixed larch-spruce-fir stands
长白落叶松-云杉-冷杉混交林林分空间结构分析
Study on Sustainable Management of Spruce-fir Mixed Stands of Coniferous and Broad-leaved Trees;
云冷杉针阔混交林可持续经营的研究