Sökning: "naturgeografi"
Visar resultat 16 - 20 av 341 avhandlingar innehållade ordet naturgeografi.
16. Agricultural expansion impacts on wetland ecosystem services from Kilombero Valley, Tanzania
Sammanfattning : Land use change has major impact on the world’s wetland ecosystems and biodiversity. The motivation behind this change has been to increase agricultural production, often resulting in negative effects on water quality and soil fertility. LÄS MER
17. The transition to a bio-based economy : Toward an integrated understanding
Sammanfattning : The bio-based economy has gained increasing attention in societal and academic debates over the past two decades, and is argued to hold solutions to several pressing sustainability challenges. However, it is not yet clear if the high-reaching aspirations of the bio-based economy can be realized. LÄS MER
18. Understanding West African Monsoon Variability : Insights from Paleoclimate Modelling of Past Warm Climates
Sammanfattning : The Sahel, a water-vulnerable region in West Africa, relies heavily on rainfed agriculture. The region experienced pronounced droughts during the 20th Century, emphasising the socio-economic importance of understanding the drivers of the rainfall variability. LÄS MER
19. Paleoglaciology of the Tian Shan and Altai Mountains, Central Asia
Sammanfattning : The mountain-systems of Central Asia, act as barriers to atmospheric circulation patterns, which in turn impose striking climate gradients across the region. Glaciers are sensitive indicators of climate change and respond to changes in climate gradients over time by advancing during cold and wet periods and receding during warm and dry periods. LÄS MER
20. Speleothems from Warm Climates : Holocene Records from the Caribbean and Mediterranean Regions
Sammanfattning : This thesis contributes to increased knowledge on Holocene climate and environmental variability from two complex and sparsely studied areas. Using a speleothem from Gasparee Cave, Trinidad, as a paleoclimate archive, the local expression of the 8. LÄS MER