搜索结果: 1-8 共查到“森林植物学 spruce”相关记录8条 . 查询时间(0.062 秒)
Biomass allocation influenced by canopy closure in a young spruce stand
tree allometry repeated sampling
2015/5/18
Growth intensity of particular tree components is controlled by a variety of factors and as a consequence,
biomass allocation also changes over time. Since the allocation of biomass controls the car...
How much birch (Betula papyrifera) is too much for maximizing spruce (Picea glauca) growth: a case study in boreal spruce plantation forests
competition future value growth and yield model forest management productivity
2015/4/14
Interest in conifer-broadleaf mixedwood forests has greatly increased due to continuous demand for hardwood products and a shift towards more biological or ecosystem-based management. In British Colum...
Development of spruce (Picea abies [L.] Karst.) target (crop) trees in pole-stage stand with different initial spacing and tending regime
Norway spruce target trees promising trees different spacing different tending
2015/4/14
This paper presents findings of a twenty-year investigation of silviculture-production in a 40-year-old afforested spruce pole-stage stand located in a mountain region. The stand was established by fo...
Extent and distribution of beech (Fagus sylvatica L.) regeneration by adult trees individually dispersed over a spruce monoculture
beech dispersed trees forest dynamics regeneration transformation of spruce monocultures
2015/3/19
Recently individually dispersed adult beech trees have regenerated in spruce monocultures and this fact could be used to manage the transformation of stands into a mixed forest. Three such cases in th...
Production of Norway spruce (Picea abies [L.] Karst.) seedlings on substrate mixes using growth stimulants
Norway spruce seedlings substrates and their mixes biostimulant treatment
2015/2/6
We evaluated the growth of Norway spruce (Picea abies [L.] Karst.) seedlings on peat and bark substrates, on their mixes and on their mixes with agroperlite. We examined the basic quantitative traits ...
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...
Structure and functions of the types of Norway spruce (Picea abies[L.] Karst.) roots
histology primary roots secondary structure Picea abies (L.) Karst.
2015/2/6
The aim of the study was to describe variability of the structure of roots in Norway spruce (Picea abies [L.] Karst.) from their growth tips to the stem foot, i.e. anchor roots in relation to their ch...