Sökning: "whole-tree harvest"
Hittade 5 avhandlingar innehållade orden whole-tree harvest.
1. Biodiversity & Biofuel. Harvest of Logging Residue Affects Arthropods
Sammanfattning : .... LÄS MER
2. Measured and modelled long-term effects of whole-tree harvest : impact on soil and surface water acid-base status in boreal forests
Sammanfattning : 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). LÄS MER
3. Forest Biomass Production Potential and its Implications for Carbon Balance
Sammanfattning : 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. LÄS MER
4. Effects of wood ash on freshwater organisms and aquatic forest ecosystems
Sammanfattning : 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. LÄS MER
5. Modelling effects of climate change and forestry on weathering rates and base cation cycling in forest soils
Sammanfattning : 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. LÄS MER