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期刊Effect of Lime Application to Acidic Soils on Oleoresin Yield Tapped from pine Plantations in South China
《林学期刊(英文)》2014年第4期390-397,共8页Run-Peng Wei Ruchun Yang Qiaowen Wei 
Oleoresin is a major non-forest product collected from commercially mature or near mature pine trees. Efforts have been made to increase oleoresin yield, but basically limited to the genetic improvement of planting ma...显示全部
关键词:pine ACIDIC Soil LIME OLEORESIN Production Site Management 
期刊‘Relationships between relationships’ in forest stands: intercepts and exponents analyses
《林业研究:英文版》2018年第3期575-582,共8页Vladimir L.Gavrikov 
in part supported by a research grant from the Russian Foundation for Basic Research ‘Impact of climate change on productivity of forest landscapes of Central Siberia:reconstruction of landscape dynamics in holocene and prognosis of tendencies of substance turnover in the landscapes’
Relationships between diameter at breast height(dbh) versus stand density, and tree height versus dbh(height curve) were explored with the aim to find if there were functional links between correspondent parameters of...显示全部
关键词:Total stem surface area SELF-THINNING CONIC approximation Power function Exponent INTERCEPT SCOTS pine 
期刊Selection of culture conditions for callus induction and proliferation by somatic embryogenesis of Pinus koraiensis
《林业研究:英文版》2021年第2期483-491,共9页Fang Gao Chunxue Peng Hao Wang Hailong Shen Ling Yang 
supported by the National Key R&D Program of China(2017YFD0600600).
The induction and proliferation of embryogenic callus are key steps for large-scale propagation of somatic embryogenesis pathway and long-term preservation of coniferous germplasm.Callus can be induced from immature e...显示全部
关键词:Korean pine Somatic embryogenesis Embryogenic callus Megagametophytes Embryonic maintenance 
期刊Stand-level biomass models for predicting C stock for the main Spanish pine species
《森林生态系统:英文版》2021年第2期387-402,共16页Ana Aguirre Miren del Río Ricardo Ruiz-Peinado Sonia Condés 
Background:National and international institutions periodically demand information on forest indicators that are used for global reporting.Among other aspects,the carbon accumulated in the biomass of forest species mu...显示全部
关键词:Martonne aridity index Dry weight biomass Carbon stock National Forest Inventory Peninsular pine forest Biomass expansion factor 
期刊松木挖土采伐试验研究
《福建林学院学报》1994年第4期371-374,共4页郑长龙 
对松木挖土采伐工艺的可行性进行试验研究.结果表明挖土采伐的技术简单易行,是增加伐倒木材积的有效途径.挖土采伐比较适用于坡度20~40°、胸径20cm以上马尾松树种平均可增加材积1.6%~1.8%,有利于降低森林资...显示全部
关键词:松木 挖土 采伐工艺 
期刊某机枪威力综合考核仿真研究
《兵器装备工程学报》2019年第6期15-18,共4页苑大威 李晓寅 郭施 边江楠 聂为彪 
以某小口径机枪为例,结合GJB3484—98枪械性能试验方法,利用ANSYS/LS-DYNA软件对其侵彻钢靶松木靶进行了仿真分析,其结果与试验结果相吻合。表明:仰射状态射角大于23°与俯射状态射角小于-15°时,弹头均不能穿透靶标,实现了该...显示全部
关键词:机枪 威力 松木靶 仿真 
期刊Impact of fixation/drying conditions on fixation rate, leachability and bioefficacy in CCA-C treated red pine and southern pine
《林业研究:英文版》2000年第4期259-264,共6页郭爱龙 
Red pine (Pinus resinosia Ait) and southern pine (Pinus spp.) sapwood blocks were pressure treated with CCA-C at retention of 6.4, 2.0, 1.5 kg(m-3 followed by fixation using 11 post-treatment schedules ranging from 50...显示全部
关键词:Red pine Southern pine Boiefficacy Leachablity FIXATION RATE CCA-C Temperature Humidil 
期刊欧洲赤松—云杉混交林分生长的研究被引量:1
《东北林业大学学报》1989年第5期91-94,共4页波列柯夫Α.Η 蒋伊尹 
1966年在苏联弗拉基米尔州设立了“自然纪念林”固定标准地。该林分为Ⅰ_a地位级的单层混交天然林。组成为8松2云,林分年龄150年(松树),每公顷蓄积为927.1 m^3,其中用材占93.3%,木材剩余物占6.4%,薪材占0.3%。用材中98%可造锯材,2...显示全部
关键词:松树 云杉 混交林 林分 生长 
期刊中国西南几种松树球果鳞片松脂含量对球果延迟开放的影响
《林业科学研究》2020年第3期48-53,共6页王兵 施国杉 李昭华 龙左卿 蒋泽艳 苏文华 张光飞 
国家自然科学基金项目(31770450,31160092)。
[目的]探究松树球果延迟开放的机制,讨论松树球果鳞片松脂含量对延迟开放的影响。[方法]以云南松、地盘松、细叶云南松、高山松、马尾松和思茅松为研究对象,调查球果宿存年、延迟开放度。采集当年生球果并测定球果鳞片中松脂含量,分析...显示全部
关键词:松树 宿存 延迟开放 球果鳞片 松脂含量 
期刊Pulse Roguing Strategy in a pine Wilt Disease Epidemic Model with General Nonlinear Incidence Rate
《应用数学与应用物理(英文)》2020年第12期2943-2953,共11页Quanben Sun Wugui Chen Zhicai Guo Weiwei Ji Jianping Wang 
In this study, we investigate a pine wilt transmission model with general nonlinear incidence rates and time-varying pulse roguing. Using the stroboscopic map and comparison theorem, we proved that the disease-free eq...显示全部
关键词:pine Wilt Disease Pulse Roguing General Nonlinear Incidence PERMANENCE 
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