Sökning: "forest trees 1985"
Hittade 4 avhandlingar innehållade orden forest trees 1985.
1. Modelling and Retrieval of Forest Parameters from Synthetic Aperture Radar Data
Sammanfattning : Currently, one of the most uncertain factors in the global carbon cycle models lies in the terrestrialcarbon stock, mainly forests. The available methods for global forest resource mapping provide onlyrough estimates of biomass, the most relevant practical quantity related to carbon stock. LÄS MER
2. Increased resilience in managed boreal forests : Controlling damage by spruce bark beetle and moose in Sweden
Sammanfattning : Most of the forests growing in Europe today have been planted, or heavily affected, by humans. This is because the forest industry provides crucial raw materials for diverse products, including timber, pulp and paper, cellulose-based substances and renewable energy sources. LÄS MER
3. The impact of forest on pest damage, pollinators and pollination services in an Ethiopian agricultural landscape
Sammanfattning : The distribution of wild biodiversity in agroecosystems affect crop performance and yield in various ways. In this thesis I have studied the impact of wild biodiversity, in terms of trees and forest structures, on crop pests, pollinators and the pollination services provided in a heterogeneous landscape in southwestern Ethiopia. LÄS MER
4. The significance of ethylene and ETHYLENE RESPONSE FACTORS in wood formation of hybrid aspen
Sammanfattning : The woody tissues serve to stabilise plants, store nutrients and translocate water and minerals. The formation of wood, or ’secondary xylem’, follows a well-defined developmental gradient which is initiated by cell division activity in the vascular cambium. LÄS MER
