搜索结果: 1-15 共查到“林学 physical”相关记录15条 . 查询时间(0.128 秒)
Effect of the skid trail cross section and horizontal alignment on forest soil physical properties
soil bulk density ground-based skidding cross slope Civil3D software Bahramnia forest
2017/6/26
Horizontal alignment and cross section characteristics of a skid trail in a ground-based skidding system including curves, wheel ruts and cross slope can impact on the forest soil. In this study the m...
Operator's physical workload in simulated logging and timber bucking by harvester
forest harvesting biofeedback ergonomics
2016/6/3
The aim is to conduct experimental measurements and analyses of physical and mental workload of harvester operators. Among other things, monitoring and analyses of work conditions and workload help re...
Detection of the effects of management and physical factors on forest soil carbon stock variability in semiarid conditions using parametric and nonparametric methods
soil organic carbon CART modelling, neural networks
2015/11/26
Forest soils in western parts of Iran are being degraded by inappropriate management. The soil organic carbon (SOC) stock was dominantly affected by this type of degradation. On the other hand, SOC is...
Effects of rubber-tired skidder and farm tractor on physical properties of soil in plantation areas in the north of Iran
aspen skid trail skidding machine soil disturbance timber skidding
2015/9/15
Physical properties of soil can be affected by machines that are used for skidding which have the potential to impact soil sustainability and forest productivity. The present study evaluated the effec...
Earthworm biomass and abundance, soil chemical and physical properties under different poplar plantations in the north of Iran
soil properties populus clones populus caspica organic carbon poplar
2015/4/24
We evaluated earthworm abundance and biomass in plantations of different poplar species and clones as well as the effect of some soil chemical and physical properties on them. Even-aged poplar species...
Selected physical properties of initial soils on the outside spoil bank of the Belchatow brown coal mine
forest reclamation spoil bank initial soils
2015/3/6
The purpose of the study was to assess, in respect of selected physical properties, the reclamation of the northern slope of the outside spoil bank of the Belchatów brown coal mine by reforestation ca...
Effects of the thickness of rotary-cut veneers on properties of plywood sheets. Part 2. Physical and mechanical properties of plywood materials
plywood MOE in bending bending strength
2015/3/3
The second part of the paper summarizes results of an institutional research aimed at the determination
of physical and mechanical properties of different sets of plywood sheets pressed under d...
The influence of particle composition in a three-layer particleboard on its physical and mechanical properties
particleboard physical and mechanical properties density
2015/1/29
The paper deals with results of research aimed at the problem of the maximum possible amount of added sawdust to standard particles into surface and central layers of three-layer particleboards in ord...
The Role of Physical and Political Factors on the Conservation of Native Vegetation in the Brazilian Forest-Savanna Ecotone
Amazon-Cerrado Transition Pristine Vegetation Driving Factors Deforestation Araguaia River Basin Regional Planning
2013/3/4
The AraguaiaRiver Basincovers a considerable extent of Brazilian Savanna (locally called Cerrado) and part of Amazon Tropical Rainforest, embracing high biodiversity and a vast flooding area. This reg...
A study on the physical properties of a bamboo moulding compared with wood and MDF mouldings
wood MDF mouldings
2014/5/7
Recently, glue-laminated bamboo normally used for flooring and panelling has been made into mouldings. The physical properties of such a bamboo moulding were studied, and the properties of it have bee...
Anatomical, physical, and mechanical properties of eldar pine (Pinus eldarica Medw.)
Pinus eldarica Medw annual ring width tracheid length
2011/6/29
The aim of this study was to determine some of the anatomical, physical, and mechanical properties of 35-year-old Pinus eldarica Medw. wood. For this purpose, 3 normal pine trees were randomly cut dow...
Physical and mechanical properties of three agroforestry tree species from Kerala, India
Acacia auriculiformis Acacia mangium Compressive stress Grevillea robusta
2009/2/20
Wood properties of three locally important fast growing tree species (Acacia auriculiformis, Acacia mangium, and Grevillea robusta) occurring as scattered and boundary planted trees on the agricul...
Physical Environment Factors That Influence Human Health in Forest Product Industry
Physical Environment Factors Human Health Forest Product Industry
2009/1/23
In this study, some informations connected with physical environmental factors are given in Blacksea Region in Turkey. In addition, the results of some data obtained from environmental factors are gi...
Physical Properties of Alder [Alnus glutinose subsps. barbata（C.A.Mey.）Yalt.] Wood Obtained From Rize-Çayeli Region
Wood Obtained Rize-Ç ayeli Region
2009/1/15
In this study, physical properties of Alder Wood [Alnus glutinose subsps. barbata (C.A.Mey.)Yalt.] were investigated. 10 trees used for experiments were obtained from Rize-Çayeli region and sam...
The Determination of Some Physical Properties of Beech Wood（Fagus orientalis Lipsky）in the Andırın Region
Eastern beech density shrinkage swelling
2009/1/14
The main aim of this study was to determine some physicals properties of the beech wood (Fagus orientalis Lipsky.) naturally growing in the Andırın region (the East Mediterranean region), an...