搜索结果: 1-13 共查到“林业基础学科 stem”相关记录13条 . 查询时间(0.109 秒)
Long-Term Soil Fertility and Site Productivity in Stem-Only and Whole-Tree Harvested Stands in Boreal Forest of Quebec (Canada)
forest biomass whole-tree harvesting soil productivity site quality index soil provinces
2023/12/19
Using residual biomass from forest harvesting to produce energy is viewed increasingly as a means to reduce fossil fuel consumption. However, the impact such practices on soil and future site producti...
Adaptive k-tree sample plot for the estimation of stem density: An empirical approach
plotless sampling distance sampling bias efficiency forest sampling
2018/3/6
Available budgets for the inventory of non-commercial woodlands are small. Therefore, there has been increased
interest in using distance methods, such as k-tree sampling, which are faster than fixed...
Effect of repeated fertilization on stem growth in old stands of Pinus sylvestris in South East Norway
nitrogen Scots pine tree ring widths
2015/5/18
We studied effects of repeated nitrogen applications on the stem growth of mature Scots pine at four sites
with the yield potential of around 3‒4.5 m3·ha–1·yr–1. Treatments included control (0...
Testing of microbial additives in the rooting of Norway spruce (Picea abies [L.] Karst.) stem cuttings
rooting of cuttings microbial additives ectomycorrhizal inoculation Picea abies Karst
2015/3/27
Laboratory-produced alginate-bead inoculum of ectomycorrhizal (ECM) fungi Cortinarius sp. and Gomphidius glutinosus, fungal commercial products ECtovit® and Trichomil®, bacterial commercial ...
Effect of the position in a stem on the length of tracheids in spruce (Picea abies [L.] Karst.) with the occurrence of reaction wood
spruce tracheid length of tracheids compression wood
2015/2/6
The paper was aimed at the determination of variability of tracheid dimensions in spruce wood in relation to the position in a spruce stem. Significant changes in dimensions were found in early-wood a...
Possible methods of Norway spruce (Picea abies[L.] Karst.) stem shape description
Norway spruce (Picea abies [L.] Karst.) stem shape Bookstein coordinates stem shape diameters Procrustes tangent coordinates principal components analysis
2015/2/6
The paper shows a possibility of using Bookstein coordinates for stem shape studies. Bookstein coordinates are simplified to stem shape diameters, for which tests of multidimensional normality, varian...
Modifying the elastomechanics of the stem and the crown needle mass distribution to affect the diameter increment distribution: A field experiment on 20-year old Abies grandis trees
Abies grandis elastomechanics field experiment stress strain diameter increment distribution
2015/2/2
In the spring of 2000, field experiments were begun on three 20-year old grand fir (Abies grandis) to influence the elasto-mechanical behavior of the stem, as well as the distribution of the assimilat...
Predicting Stem Windthrow Probability in a Northern Hardwood Forest Using a Wind Intensity Bio-Indicator Approach
Windthrow Prediction Species Wind-Firmness Tolerant Hardwood Forests Silviculture Guidelines
2013/3/4
Unlike fire or insect outbreaks, for which a suppression program can be implemented, it is impossible to prevent a windstorm event or stop it while it is occurring. Reducing stand susceptibility to wi...
An Investigation on the Allocation of Selection Weight on Growth and Wood Basic Density to Maximize Carbon Storage in the Stem of Sugi (Cryptomeria japonica D.Don) Plus-tree Clones
carbon storage clone global warming prevention index selection sugi
2009/8/27
An optimum allocation of selection weight on the traits that were related to carbon storage in the stem of sugi was investigated to establish criteria for choosing plus tree clones suitable for carbon...
Analysis of Stem Growth Pattern in Japanese Cedar (Cryptomeria japonica) Trees in a Natural Forest in Akita,Northeastern Japan
annual increment of basal area annual increment of volume natural Japanese cedar stem analysis thinning
2009/8/25
The pattern of growth in 10 Japanese cedar (Cryptomeria japonica) trees (age 162 to 255 years) located within a natural forest was analyzed using ring-width data. These trees showed a rapid increase i...
Influence of Stem Height on Internal Morphological Properties of Oriental Spruce [Picea orientalis（L.）Link.] Wood
Stem Height Internal Morphological Properties Oriental Spruce [Picea orientalis（L.）Link.] Wood
2009/1/16
In this study, the influence of stem height on the internal morphological properties of the Oriental spruce [Picea orientalis (L.) Link.] were investigated. Sample trees of 36-44 cm in diameter and 1...
Evaluation of Stand Homogeneity and Stem Quality in Ash（Fraxinus angustifolia, Wahl）Stands
Stand Homogeneity Stand Value Stem Quality Ash
2009/1/14
This study presents the results of a study conducted to determine stem quality and the homogeneity of stands of ash (Fraxinus angustifolia Wahl.) in natural and plantation stands in the central and we...
Striking a balance：Safe sampling of partial stem cross-sections in British Columbia
cambial scars fire history partial sections safety criteria sampling procedures wildlife trees
2009/1/9
Dating cambial injury on a tree is an important objective of ecological research that determines the timing of disturbances such as fire, insect outbreaks, tree falls, or human modification of trees. ...