Essays about: "bark"

Showing result 21 - 25 of 250 essays containing the word bark.

  1. 21. Analysis and Valorization of Bark from Silver Birch, Scots Pine, and Norway Spruce : Compositional analysis of bark from common Swedish trees in forestry, to optimize sustainability procedures and monetary value of bark residue

    University essay from Umeå universitet/Kemiska institutionen

    Author : Isak Lindbäck; [2022]
    Keywords : ;

    Abstract : Silver birch, Scots pine, and Norway spruce are the three most common types of trees in Sweden and make up to 90% of standing volume in Swedish forests (Skogsstyrelsen 2015, 3). With millions of cubic meters of wood being cut down annually, bark and other residues that cannot be used for sawn timber is left over and burnt for energy. READ MORE

  3. 22. Granbarkborren i svenska produktionsskogar : vilka faktorer påverkar massutbrott och vilka åtgärder kan vidtas för att minska dem?

    University essay from SLU/Dept. of Biosystems and Technology (from 130101)

    Author : Fredrike Lohe; Sonja Otell; [2022]
    Keywords : Ips typographus; Picea abies; klimatförändringar; skadedjur; naturliga fiender; vattenstress; storm; skogsbruk; massattack;

    Abstract : Granbarkborren, Ips typographus, är en av få arter som kan öka drastiskt i populationsdensitet och leda till en omfattande dödlighet av träd i skogen. Skadorna år 2020 uppgick till ett värde på 3,5 miljarder kronor, vilket gör det värdefullt att försöka förstå varför dessa utbrott sker och vad för åtgärder som kan vidtas för att undvika dem. READ MORE

  4. 23. Tonsillit hos hund : en uppföljande studie av tonsillektomi

    University essay from SLU/Dept. of Clinical Sciences

    Author : Marie Petersson; [2022]
    Keywords : tonsillit; jakthundar; hundar; tonsillektomi;

    Abstract : Tonsillit är en svensk veterinärmedicinsk problematik som vanligtvis ses hos jakthundar. Hundarna behandlas oftast genom flertalet långvariga medicinska behandlingar innan veterinärer rekommenderar tonsillektomi. READ MORE

  5. 24. Early-stage detection of bark beetle infested spruce forest stands using Sentinel-2 data and vegetation indices

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Karl Piltz; [2022]
    Keywords : Geomatics; Remote sensing; Bark beetle; Early-stage; Vegetation index; Sentinel-2; Spruce; Forestry; Earth and Environmental Sciences;

    Abstract : The European spruce bark beetle is an insect that is often referred to as a pest. Responsible for the destruction of over 150 million m3 of Norwegian spruce forest in Europe over the last 50 years makes this insect one of the major disturbances to the forest industry. READ MORE

  6. 25. Mixed Stand vs Monoculture : a Simulation Study Assessing Growth and Profitability of Norway spruce and Birch in Mixtures and Pure Stands

    University essay from SLU/Southern Swedish Forest Research Centre

    Author : Babatunde Dosumu; [2022]
    Keywords : N.spruce-birch stands; monoculture; thinning treatment; mixed forest;

    Abstract : Picea abies L. Karst (N. spruce) monocultures dominate the forest landscape of southern Sweden due to their suitability for the prevalent site conditions, well established silviculture, and profitability. However, disturbances such as windthrow, bark beetle damage, and Heterobasidion root rot pose a risk to N. READ MORE