175 uppsatser · sida 3 av 12
… forestry. The spread of root rot can partly be prevented by treating the spruce stumps in thinnings. Late pre-commercial thinning (PCT) is one of the forestry measures where stump treatment is not used. Late PCT can be defined as: The act of cleaning the stand with the aim of …
… to at the same time impregnate and stain/colour wood samples of pine and spruce by using the Linotech method. In this study one pigment (carbon) dissolved in mineral oil and one colouring agent dissolved in an organic solution was mixed into the linseed oil before the …
beståndshistorik i tolv nyckelbiotoper i Lycksele kommun
… of which one half was dominated by Scotch pine and the other half by Norway spruce. In the other four key habitats deciduous trees, mainly hairy birch, were dominating. Five of the eight conifer stands showed evident traces from logging. The first loggings were performed in the …
… the diseased stands where over-represented on land that former hold Norway spruce (Picea abies). Two different definitions were used. The analysis revealed that some of the districts in the three analysed regions showed a larger amount of diseased stands than others. These …
… of the local forestry boards data shows that all tree-species apart from spruce occurs relatively more often in PF-stands than average. The interviews resulted in five main types of stands with combined goals. The stands are mixed noble deciduous tree, 8 %, older beech stands …
… infections from Heterobasidion annosum in stands mainly dominated by Norway spruce (Picea abies (L.) Karst.). Previously studies show that stump treatment with Rotstop® S and urea gives effective protection against Heterobasidion annosum in stands with mainly spruce. The …
… option for large scale clonal propagation of Elite clonal material. For Norway spruce (Picea abies L. Karst.), SE procedures suitable for laboratory scale propagation have been available since the mid-1980s. The SE technique has a great potential for mass propagation of conifer …
… decreased and the result became more even.. In addition, more pine than spruce was incorrectly planted. Without soil moisture maps, the proportion of improper pine and spruce was 66 % and 34 % respectively, and with soil moisture maps, the proportion of improper pine and spruce …
är produktionen hållbar?
The aim of this report was to investigate the hypothesis that Norway spruce (Picea abies L. Karst), planted on poor ”Scots pine” stands will not have sustained growth during the whole rotation, due to water deficit in the closed stands. In order to investigate this hypothesis …
… on distance from the scanner and tree species. Two plots (one pine and one spruce) were used for this study. The plots were circular with one tree in the centre that was visible from as many directions as possible. The plots were divided into different directions according to …
… of Europe since the middle ages. The use of shelter wood cutting in Norway spruce (Picea abies (L.) Karst.) forests in Sweden met a revival in the early 1990s as an alternative for the dominating clear-cutting system when silvicultural costs increased dramatically for the …
This study was made on former agricultural areas that had been planted with spruce or pine, in the county of Västerbotten. The goal of the project was to investigate suspected deficiency of boron in these areas. Several objects have been reported for possible deficiency and some …
… of distribution that fiber lengths follow. In this thesis fiber lengths from spruce and pine are examined from 30mm high sticks. The purpose is to find a type of distribution that is flexible enough to capture many different kinds of fiber length distributions observed in the …
… of distribution that fiber lengths follow. In this thesis fiber lengths from spruce and pine are examined from 30mm high sticks. The purpose is to find a type of distribution that is flexible enough to capture many different kinds of fiber length distributions observed in the …
… of distribution that fiber lengths follow. In this thesis fiber lengths from spruce and pine are examined from 30mm high sticks. The purpose is to find a type of distribution that is flexible enough to capture many different kinds of fiber length distributions observed in the …
