Search for dissertations about: "whole-tree harvest"

Found 5 swedish dissertations containing the words whole-tree harvest.

  2. 1. Biodiversity & Biofuel. Harvest of Logging Residue Affects Arthropods

    Author : Karolina Nittérus; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; biodiversity; beetles; biofuel; Carabidae; Cerambycidae; Celeoptera; forestry; habitat; structure; logging residue; Lycosidae; microhabitat choice; slash; species compositin; species richness; spiders; structural comlexity; whole-tree harvest;

    Abstract : .... READ MORE

  4. 2. Measured and modelled long-term effects of whole-tree harvest : impact on soil and surface water acid-base status in boreal forests

    Author : Therese Zetterberg; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : This thesis examines the impact of whole-tree harvest (WTH) on soils and surface waters acid-base status in coniferous forests compared with conventional harvesting (CH). A combination of field observations (up to four decades) and dynamic modelling was used to describe the impact on soil calcium (Ca²⁺) pools and surface water acid neutralizing capacity (ANC). READ MORE

  5. 3. Forest Biomass Production Potential and its Implications for Carbon Balance

    Author : Bishnu Chandra Poudel; Mittuniversitetet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Forestry and Wood Technology; Skog och träteknik;

    Abstract : An integrated methodological approach is used to analyse the forestbiomass production potential in the Middle Norrland region of Sweden, and itsuse to reduce carbon emissions. Forest biomass production, forest management,biomass harvest, and forest product use are analyzed in a system perspectiveconsidering the entire resource flow chains. READ MORE

  6. 4. Effects of wood ash on freshwater organisms and aquatic forest ecosystems

    Author : K. Andreas Aronsson; Nils Ekelund; Thomas Palo; Olli-Pekka Penttinen; Mittuniversitetet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Wood ash; Euglena gracilis; Gammarus pulex; Fontinalis antipyretica; pH; alkalinity; toxicity; nutrients; first order stream; Askåterföring; Vedaska; Akvatiska näringssystem; Mineralnäring; Biology; Biologi;

    Abstract : Wood ash application (WAA) has been recommended mainly for two reasons; i) to avoid depletion of minerals in the soil due to whole tree harvest in the forestry and ii) to mitigate harmful effects of acidification of soil and surface waters. In conclusion, the effects on terrestrial ecosystems and, especially, tree growth, can be attributed to the properties of the ash, the dose applied and the specific site at which the ash is applied. READ MORE

  7. 5. Modelling effects of climate change and forestry on weathering rates and base cation cycling in forest soils

    Author : Veronika Kronnäs; BECC: Biodiversity and Ecosystem services in a Changing Climate; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; weathering; forest; biogeochemistry; Dynamic Modelling; ForSAFE;

    Abstract : Base cations are important in forest soils as nutrients for vegetation and protection against soil acidification. Today, base cations have been lost from soils through acidification and forest harvesting. With low levels in soils, temporary situations of deficiency could occur. READ MORE