Sökning: "Agricultural Sciences Other Agricultural Sciences Environmental Sciences related to Agriculture and"
Visar resultat 1 - 5 av 236 avhandlingar innehållade orden Agricultural Sciences Other Agricultural Sciences Environmental Sciences related to Agriculture and.
1. On Sustainability of Biomass for Energy and the Governance Thereof
Sammanfattning : Due to concerns about climate change, energy security, and resource scarcity, non- renewable resources are increasingly being displaced by biomass. As with most human activities, the production of biobased products can be associated with negative impacts. Primarily, this relates to the biomass supply systems, i.e. LÄS MER
2. Felling Forests from Afar: Quantifying Deforestation Driven by Agricultural Expansion and International Trade
Sammanfattning : Deforestation is a major source of human-caused greenhouse gas emissions and the largest threat to terrestrial biodiversity. Most forest loss is due to the expansion of agricultural land use increasingly driven by international demand for food, fuel and fibre. LÄS MER
3. Where have all the forests gone? Quantifying pantropical deforestation drivers
Sammanfattning : Deforestation across the tropics continues to be a major source of greenhouse gas emissions and the largest threat to biodiversity on land. With strengthened commitments to reduce deforestation from countries and companies alike, it is crucial that renewed investments for reducing deforestation be guided by a sound understanding of what drives deforestation. LÄS MER
4. Bioaugmentation for reduction of diffuse pesticide contamination : a bioprophylactic concept
Sammanfattning : Pesticides and their residues frequently contaminate surface waters and groundwater so consequently there is a great need to identify methods and practices that reduce such contamination. This thesis examined the potential of a 'bioprophylactic' concept based on the hypothesis that diffuse contamination after application in the field can be significantly reduced if pesticides are degraded as rapidly as possible after the intended effect has been achieved. LÄS MER
5. Assessing reactive nitrogen flows in European agricultural systems
Sammanfattning : In most ecosystems, nitrogen is a scarce and growth-limiting nutrient. Natural and anthropogenic processes convert unreactive atmospheric dinitrogen (N2) into reactive, bioavailable, nitrogen. LÄS MER