搜索结果: 31-36 共查到“林学 density”相关记录36条 . 查询时间(0.479 秒)
Relationship between Stem Density and Interception Ratio for Coniferous Plantation Forests in Japan
conifer evapotranspiration forest management interception evaporation plantation stem density
2009/8/27
Summarizing 12 studies examining interception evaporation from coniferous plantation forests in Japan, we found a positive correlation between stem density and interception ratio. Regressing the corre...
A weighted relative density model applied to loblolly pine（Pinus taeda L.）stands
relative density size-density Pinus taeda L loblolly pine
2009/3/3
We present a weighted, individual-tree relative density approach whose reference conditions have the same distribution of crown areas and species as a subject stand. An initial evaluation of the me...
The Effects of Origin and Regional Differences on the Density of Douglas Fir [Pseudotsuga menziesii（Mirb.）Franco] Wood
Origin and Regional Differences Density of Douglas Fir [Pseudotsuga menziesii (Mirb.) Franco] Wood
2009/1/16
In this study, the effects of origin and regional differences on the density of Douglas Fir [Pseudotsuga menziesii (Mirb.) Franco] wood were investigated. A total of 18 trees of 23 different ages obta...
Effect of some Preservation Chemicals on the Density of Scoth Pine and Oriental Beech Woods
Preservation Chemicals Density Scoth Pine Oriental Beech Woods
2009/1/15
This study was designed to determine the effect of impregnation with some chemicals on the density of wooden materials. For this reason, experimentals were prepared from Scotch pine and Oriental beech...
Effects of Seed Origin and Site on Wood Density of Sitka Spruce（Picea sitchensis（Bong.）Carr.）Grown in Britain
Seed Origin Site Wood Density Sitka Spruce Plantations
2009/1/13
Since density may have a direct influence on wood properties and because density is a factor under genetic control, this study details the effects of seed origins and sites on density. In addition to...
The Effect of Moisture Content and Wood Density on the Preservative Uptake of Caucasian fir（Abies nordmanniana（Link.）Spach.）Treated with CCA
Moisture content Wood density Preservative uptake Full-cell process CCA Caucasian fir Abies spp
2009/1/13
The effect of moisture content and wood density on the preservative uptake (on the basis of the percentage of void volume filled (VVF%)) of Caucasian fir (Abies nordmanniana (Link.) Spach.) was studie...