Sökning: "Landscape Reconstruction Algorithm"
Hittade 3 uppsatser innehållade orden Landscape Reconstruction Algorithm.
1. Reconstruction of Fire Spread with a Markov Random Field Mixture Model
Master-uppsats, Lunds universitet/Matematisk statistikSammanfattning : This thesis revolves around reconstructing fire sizes for historical fires in Jämtgaveln, Sweden based on data of fire scars in trees. We propose a Hidden Markov Model (HMM), where the domain is divided into quadratic grid cells of 250 $\times$ 250 m and with these grid cells we associate a binary Markov random field taking values 0 or 1 corresponding to no fire and fire respectively. LÄS MER
2. Using Pollen to Reconstruct Past Vegetation in a Landscape : Comparing Theoretical and Empirical Methods on a Single Pollen Record in Hemavan, Sweden
Magister-uppsats, Umeå universitet/Institutionen för idé- och samhällsstudierSammanfattning : Pollenanalyser har länge gjorts för att få en uppfattning om förflutna vegetationer. Men att återskapa olika miljöer med hjälp av pollen är svårt på grund av en rad olika faktorer. LÄS MER
3. Land cover changes in Southern Sweden from the mid-Holocene to present day: insights for ecosystem service assessments
Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapSammanfattning : Climate change and human impact play a huge role in the sustainability and development of ecosystems and the services they offer to societies over temporal and spatial scales. Fossil pollen-based estimates provide unique information on past land cover change, but to date there are not many methods able to create spatially continuous maps and have a fine scale of land cover changes inferred from pollen information. LÄS MER