Sökning: "logging operations"

Visar resultat 1 - 5 av 20 avhandlingar innehållade orden logging operations.

  1. 1. Boreal vegetation responses to forestry as reflected in field trial and survey data

    Författare :Johan Bergstedt; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Logging; boreal forest; selective cutting; scarification; ground-layer flora; survey data;

    Sammanfattning : This thesis had two objectives: the first objective was to evaluate the response of forest ground vegetation to selected forestry operations, i.e. cutting of different intensities and scarification; the second objective was to compare the use of survey data in vegetation research with that of more traditional research using field trials - i.e. LÄS MER

  3. 2. Excavators and backhoe loaders as base machines in logging operations

    Författare :Jerry Johansson; Högskolan Dalarna; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  4. 3. Terpener i luft från skogsbruk och skogsindustri

    Författare :Ann-Margret Hvitt Strömvall; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; monoterpenes; forest decline; gas chromatography; kraft pulp industry; ambient air; photo-oxidants; logging operations; ozone; stone groundwood; Scots pine; Norwegian spruce;

    Sammanfattning : .... LÄS MER

  5. 4. GIS-based decision support systems to minimise soil impacts in logging operations

    Författare :Sima Mohtashami; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Mechanised logging operations can leave negative impacts, like ruts, on forest soils. To avoid this, forestry planners and machine operators need decision support systems that can estimate soil trafficability and help to minimise soil impacts. LÄS MER

  7. 5. Human factors in mechanized cut-to-length forest operations

    Författare :Carola Häggström; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Although forest operations research has a more than 50-year-long tradition in the field of human factors, there is a current decline in resources put on continuous and systematic human factors research. Therefore, the overall aim of this thesis was to contribute new knowledge on working conditions in mechanized cut-to-length logging operations and their relationship to system performance. LÄS MER