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沙地云杉(Picea mongolica)农田防护林带不同配置模式的防风效果
农田防护林 风洞模拟实验 流场 防风效能
2018/4/18
沙地云杉（Picea mongolica）为常绿针叶乔木，可作为荒漠区防护林体系建设的优良植物材料，其株高和植株构型明显区别于杨树等传统的防护林树种。因此，本文通过风洞模拟实验，在8、10、15 m·s-1的风速条件下，研究了沙地云杉农田防护林单林带前后的风速流场特性和防风效能。单林带采用3种配置模式，即两行等株行距（Ⅰ型）、两行"品"字型（Ⅱ型）和四行簇状"品"字型（Ⅲ型），基于垂直风速流场对3...
SIMULATING CANOPY GAP FRACTION OF COMPLEX 3D FOREST SCENES OF PICEA SITCHENSIS (SITKA SPRUCE)
Forestry 3D canopy modelling gap fraction
2015/9/8
We present an application of 3D canopy modelling for assessing the structural accuracy of complex 3D structural models of
Sitka spruce. Such models can be used to simulate canopy reflectance at the l...
Utilization of spruce (Picea abies [L.] Karst.) and beech (Fagus sylvatica L.) wood in plywood production using different processing pressures
composite compression veneer density profile
2015/5/5
In this research the spruce plywood board and combined spruce-beech plywood board were prepared
in laboratory conditions using two levels of processing pressure
Evaluating the Influence of Disturbance and Climate on Red Spruce (Picea rubens Sarg.) Community Dynamics at its Southern Range Margin
dendrochronology climate change tree-rings
2014/11/26
Picea rubens(red spruce) populations experienced a synchronous rangewide decline in growth and vigor starting in the 1960’s, which was likely caused by climate change or environmental disturbances (e....
THE INFLUENCE OF CLIMATE ON TREE-RING MAXIMUM LATEWOOD DENSITY IN NORWAY SPRUCE (Picea abies (L.) Karst.) AT TWO SITES IN SLOVENIA
Norway spruce (Picea abies (L.) Karst.) climate maximum latewood density MXD densitometry
2009/11/27
Norway spruce (Picea abies (L.) Karst.) is frequently the object of dendrochronological research owing to its distribution, wood structure and longevity. The Norway spruce chronologies published in Sl...
USE OF DIFFERENT GROWTH PARAMATERS OF NORWAY SPRUCE (Picea abies (L.) Karst.) TO STUDY TREE RESPONSE TO CLIMATE
Norway spruce Picea abies multiproxy analysis Pokljuka Slovenia dendroecology
2009/11/26
In the paper, potential analysis of various growth parameters of Norway spruce are introduced at the macro and micro levels. Dendroecological measurements give information as to xylem growth ring widt...
DENDROECOLOGICAL STUDY OF SPRUCE (Picea abies (L.) Karst.) GROWTH AROUND TWO COAL-FIRED POWER PLANTS
air pollution with SO2 forest decline dendroecology radial growth Picea abies (L.) Karst
2009/11/26
The main objective of this study was to investigate tree-ring width before, during and after onset of significant SO2 air pollution around coal-fired power plants Šoštanj (TEŠ) and Trbo...
THE EFFECT OF ENHANCED UV-B RADIATION ON NORWAY SPRUCE (Picea abies (L.) Karst.) AND CONSEQUENCES FOR THE MOUNTAIN FOREST
Norway spruce (Picea abies) trees UV-B radiation photochemical efficiency ETS
2009/11/26
Norway spruce trees from the subalpine stand are exposed not only to high UV-B radiation but also to a complex of other environmental factors, such as high photosynthetically active radiation, extreme...
Response of cambium in Norway spruce (Picea abies) to heating and cooling of stem
Norway spruce (Picea abies) cambium cell differentiation xylem phloem heating cooling
2009/11/26
The effect of experimental heating and cooling in a part of the stem of Norway spruce (Picea abies) on cambial activity and cell differentiation was studied. Experiments were performed for 30 days; he...
ISOLATION AND CHARACTERIZATION OF ESSENTIAL OILS FROM THE CONES OF NORWAY SPRUCE (Picea abies Karst.), EUROPEAN LARCH (Larix decidua Mill.) AND SCOTS PINE (Pinus sylvestris L.)
forestry enterprise safety at work work accident frequency severity work conditions
2009/11/26
Extraction and chemical characterization of essential oils from the cones of Norway spruce, European larch and Scots pine are presented in the article. Various monoterpenes have been identified and th...
Genetic differentiation of THE INDIGENOUS Norway spruce (Picea abies (L.) Karst) populations in Slovenia investigated by means of isoenzyme gene markers
Picea abies (L.) Karst. isoenzymes genetic differentiation forest gene conservation Slovenia
2009/11/26
Genetic differentiation of 22 indigenous Norway spruce (Picea abies (L.) Karst) populations from Slovenia and 4 from Croatia has been investigated by means of isoenzyme gene markers. The degree of dif...
NORWAY SPRUCE (Picea abies (L.) Karst) DAMAGE IN THE ZASAVJE DISTRICT OF SLOVENIA EVALUATED BY TWO METHODS
air pollution Zasavje Norway spruce Picea abies (L.) tree damage
2009/11/25
The Zasavje district has been heavily affected by air pollution due to mining, the presence of a coal-fired power plant, and industry. The extent of forest damage differs according to location because...
Withdrawal Strength of Some Screws and Nails in Waferboard and Picea or Oriental Beech
Withdrawal Strength of Some Screws Nails Waferboard Picea Oriental Beech
2009/1/15
In this paper; it was carried out to determine the withdrawal strength of some screws and nails of WFB, picea and oriental beech that are using at furniture product. For this reason, it was applied t...