搜索结果: 1-7 共查到“农学 Scots pine Pinus sylvestris L.”相关记录7条 . 查询时间(0.109 秒)
Analysis of the genetic structure of a model Scots pine (Pinus sylvestris) seed orchard for development of management strategies
fructification gene markers isozymes Monte-Carlo test Rao coefficient Shannon index
2015/4/24
Genetic structure, diversity and clonal homogeneity were determined on the basis of the isozyme gene markers in a model Scots pine seed orchard in the north-eastern part of the Czech Republic that ori...
An economic aspect of conversion of Scots pine (Pinus sylvestris L.) stands in the Polish Lowland
Pinus sylvestris pine stands oak stands
2015/3/16
Pine stands at fertile sites need conversion into broadleaved or mixed forests. Yet, according to the age of stand, conversion may have different economic results. Therefore, in order to reduce costs ...
Feeding ecology of pine shoot beetles (Tomicus spp.) in tree crowns of Scots pine (Pinus sylvestris L.) stands under one-year outbreak
Tomicus piniperda T. minor Pinus sylvestris
2015/3/5
Studies were carried out in southern Poland during 2002–2006 in Scots pine stands under the effect of an outbreak of pine shoot beetles. The qualitative aspects of beetle feeding in tree crowns, studi...
Comparison of Norway spruce (Picea abies [L.] Karst.), Scots pine (Pinus sylvestris L.) and European larch (Larix decidua Mill.) stem shape by means of geometrical methods
Norway spruce Scots pine European larch stem shape
2015/3/3
In this article the stem shape is compared in three coniferous tree species: Norway spruce, Scots pine
and European larch. Stem is investigated by means of geometrical methods. Simplified Bookstein ...
A contribution to the knowledge of Scots pine (Pinus sylvestris L.) stem shape
Scots pine (Pinus sylvestris L.) stem shape Procrustes analysis principal components analysis
2015/2/2
This is a study on the evaluation of stem shape in Scots pine. The experiments were carried out on 430 stems without bark, taken from 30 fully analysed sample trees that grew in 5 different locations ...
Needle traces as indicators of growing conditions in Scots pine (Pinus sylvestris L.)
needle retention needle density environmental and anthropogenic impacts
2015/1/29
Needle retention (number of needle sets) and needle density (number of needle pairs per centimeter of shoot) were surveyed on Scots pines in five forest regions of Slovakia. The Needle Trace Method (N...
The relationship between the form of dead bark and lignin content in Scots pine (Pinus sylvestris L.)
Form of dead bark lignin content Pinus sylvestris L.
2010/1/11
In this study the proportion of lignin in wood tissue was analysed in 36 Scots pines differing in their form of dead bark. Material for analyses came from pure pine stands aged 89-91 years located in...