搜索结果: 1-10 共查到“Abies sachalinensis”相关记录10条 . 查询时间(0.045 秒)
Growth of Abies sachalinensis Along an Urban Gradient Affected by Environmental Pollution in Sapporo, Japan
air pollution climate change implications oxides urbanity tree growth
2024/3/4
Urban tree growth is often affected by reduced water availability, higher temperatures, small and compacted planting pits, as well as high nutrient and pollution inputs. Despite these hindering growth...
Effect of Thinning on the Natural Regeneration of Broad-leaved Trees in Abies sachalinensis Plantations
Abies sachalinensis plantation broad-leaved tree light condition natural regeneration thinning
2009/8/27
To examine the conversion of conifer plantations to mixed forests comprising coniferous and broad-leaved trees, we investigated responses of understory vegetation to variable-intensity thinning in 39-...
Changes in Biomass of Understory with Silvicultural Operations in Abies sachalinensis
Abies sachalinensis biomass relative light intensity silvicultural operation understory
2009/8/25
The understory biomass (height<3 m; tree, vine and herbaceous species) in 21 plantation stands of Abies sachalinensis was investigated to understand how that biomass changes with forest age and with e...
Relationships between the Distribution and Site Conditions of Abies sachalinensis Seedlings, Saplings and Juveniles in Selection Cutting Stands of Natural Forests in Central Hokkaido,Japan
Abies sachalinensis, distribution characteristics, natural regeneration, selection cutting stand, site conditions
2009/8/24
We examined how site conditions in selection cutting stands of natural forests relate to the regenerate distribution of Abies sachalinensis, which is a main species of mixed conifer-broadleaved forest...
Genetic Variation and Genotype-environment Interaction in Annual Ring Structure in Progeny Test of Plus Trees of Sakhalin Fir (Abies sachalinensis)
annual ring structure genotype-environment interaction heritability x-ray densitometry
2009/8/24
For improving the wood properties of Sakhalin fir (Abies sachalinensis) variation in annual ring structure and genetic variation in different environments were examined by X-ray densitometry. The spec...
Invasion and Growth Processes of Natural Broadleaved Trees and Influences of Thinning on the Processes in an Abies sachalinensis Plantation
Abies sachalinensis plantation broadleaved tree growth regeneration thinning
2009/8/24
To determine the invasion and growth processes of natural broadleaved trees in a conifer plantation, and to examine the influence of forest operations on these processes, we investigated the species c...
The Non-Destructive Evaluation of Green Moisture Content in Todomatsu (Abies sachalinensis) Using a Lateral Impact Vibration Method
Todomatsu moisture content heartwood lateral impact vibration
2010/3/4
We applied a lateral impact vibration method to todomatsu (Abies sachalinensis) plus-tree clones. This method is non-destructive and makes it easy to estimate the green moisture content (Mc) of the he...
Longitudinal Change of Dynamic Modulus of Elasticity and Quality Evaluation by a Non-destructive Method in Todomatsu（Abies sachalinensis）Plus Trees
todomatsu stress wave velocity standing tree dynamic modulus of elasticity
2009/3/6
Longitudinal changes of dynamic modulus of elasticity values (Efr) of logs for todomatsu (Abies sachalinensis) were investigated to clarify the best vertical region of the stem (height from ground lev...
Changes in Bending Properties and Shrinkage of Kiln Dried Todomatsu（Abies sachalinensis）Wetwood
wetwood static bending properties impact bending properties shrinkage high temperature drying
2009/3/4
Changes in bending properties and shrinkage of heat-treated todomatsu (Abies sachalinensis Mast.) wetwood were investigated. Specimens having dimensions of 7 mm(R)×7 mm(T)×115 mm(L) and 30 mm(R)×30 mm...
Longitudinal Changes of Basic Density and Non-Destructive Quality Evaluation Using the Pilodyn in Todomatsu（Abies sachalinensis）Plus Tree Clones
todomatsu clone longitudinal change basic density Pilodyn penetration
2009/3/4
The longitudinal changes in the basic density of disks (mean Bd) of todomatsu (Abies sachalinensis) were investigated using plus-tree clones and breeding-material clones. The relationship between Pilo...