Sökning: "sitka"

Visar resultat 1 - 5 av 12 uppsatser innehållade ordet sitka.

1. 1. Comparison of native and introduced tree species in a range from low to high productivity sites in southern Sweden

   Master-uppsats, SLU/Southern Swedish Forest Research Centre

   Författare :Gailene Brazaityte; [2023]
   Nyckelord :introduced tree species; low productivity sites; moderate productivity sites; high productivity sites; Picea abies; Pinus sylvestris; Betula pendula; Picea glauca; Picea mariana; Picea sitchensis; Pinus contorta; Pseudotsuga menziesii; Abies grandis; Populus balsamifera; Larix x eurolepis; Populus tremula × Populus tremuloides;

   Sammanfattning : The dilemma of climate change, biodiversity conservation and economic efficiency in nowadays forestry leads us to search for the new solutions. Introduction of non-native tree species becomes a more frequently explored field as a solution for the future problems. LÄS MER

3. 2. An early study on the potential of landscape and geographical variables to reduce bias in forest forecast planning in Ireland : a view on the value of data mining in an industry and era rich in information

   Master-uppsats, SLU/Southern Swedish Forest Research Centre

   Författare :Charles Socrates Judd; [2022]
   Nyckelord :landscape; logistic regression; strategic; tactical; forecast; elevation;

   Sammanfattning : At a time when data are an integral part of many industries and the world as a whole, driven by a digital dominant era, there is an emerging discussion surrounding the level of value captured. Using data accumulated in the forest management system and the surrounding databases of the forestry semi state Coillte, my aim was to research if there was any type of data that could potentially be used to identify and understand inaccuracy in long- and short-term forecasting. LÄS MER

4. 3. Phenotypic differences between plus-tree progenies of Sitka spruce (Picea sitchensis) and a comparison with Norway spruce (Picea abies)

   Master-uppsats, SLU/Southern Swedish Forest Research Centre

   Författare :Teresa López-Andújar Fustel; [2019]
   Nyckelord :Picea sitchensis; growth; heritability; phenotypic and genetic correlations;

   Sammanfattning : Forest productivity and economic gains are two of the most important aspects to consider when managing forests these days. The performance of these depends on rotation periods and yields providing new opportunities to maximize earnings from the forest site and plant material. LÄS MER

5. 4. Thuja plicata - etableringsförsök av jättetuja med fyra olika provenienser

   Kandidat-uppsats, Linnéuniversitetet/Institutionen för skog och träteknik (SOT)

   Författare :Alexander Hällgren; [2015]
   Nyckelord :jättetuja; provenienser; etablering; överlevnad; frosttorka; snytbaggeskador;

   Sammanfattning : Future climate changes may lead to an interest of alternative and foreign forest tree species in order to spread the risks in forestry. Douglas fir, Sitka spruce, Freemont cottonwood and hybrid aspen are examples of popular foreign tree species that along with western red cedar could have a future in the Swedish forests. LÄS MER

7. 5. Avverkning av sitkagranar i Skottland

   Kandidat-uppsats, SLU/School for Forest Management

   Författare :Arvid Zackrisson; [2015]
   Nyckelord :slutavverkning; skördaraggregat; kortfilm;

   Sammanfattning : The purpose of this study is to explain the problem with low growing branches on sitka spruce, making it hard to do timber harvesting in Scotland and how different forest equipment companies have solved the problem with solutions for a example a double pair of delimbing knives. This study is a part of the examination in the Forest Management Programme ( Bsc level) at the Swedish University of Agricultural Sciences located in Skinnskatteberg, Sweden. LÄS MER