Sökning: "skogsbruk och fiske Jordbruksvetenskap"
Visar resultat 1 - 5 av 205 avhandlingar innehållade orden skogsbruk och fiske Jordbruksvetenskap.
1. 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
2. Model-Based Stem Volume Retrieval and Windthrow Detection using CARABAS and P-band SAR
Sammanfattning : Radar remote sensing is an efficient method for monitoring forests over large areas. Radar waves transmitted from a system carried by a satellite or an aircraft interact with trees on the ground, and the reflected waves are used to form images which are independent of weather and light conditions. 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. Utjordar och ödegårdar : en studie i retrogressiv metod
Sammanfattning : The crisis of the Late Middle Ages is still an ongoing discussion. Desertion of small isolated settlements in woodlands is a well known fact. In villages and hamlets, however, desertion is hidden because holdings were merged (partial desertion). LÄS MER