Essays about: "Vegetation reconstruction"

Showing result 1 - 5 of 18 essays containing the words Vegetation reconstruction.

  1. 1. Using Pollen to Reconstruct Past Vegetation in a Landscape : Comparing Theoretical and Empirical Methods on a Single Pollen Record in Hemavan, Sweden

    University essay from Umeå universitet/Institutionen för idé- och samhällsstudier

    Author : Johanna Kantak; [2022]
    Keywords : Vegetation reconstruction; LRA; palynology; fall speed; GIS;

    Abstract : 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. READ MORE

  3. 2. A valuation of ecosystem services from blue-green infrastructure for stormwater management

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Sofia Anderzon; [2021]
    Keywords : Stormwater; blue-green infrastructure; urban ecosystem services; indicators; semi-quantitative valuation; Dagvatten; dagvattenhantering; blågrön infrastruktur; urbana ekosystemtjänster; indikatorer; semi-kvantitativ värdering;

    Abstract : The ongoing urbanization leads to densification and growth of cities, which replaces natural areas with hard surfaces. Precipitation is then more likely to runoff as stormwater than to be detained locally. Also, precipitation is predicted to be increasing as an effect of climate change. READ MORE

  4. 3. Reconstruction of past European land cover from pollen data: using spatial statistics and Crank-Nicolson Monte Carlo

    University essay from Lunds universitet/Matematisk statistik

    Author : Lovisa Svensson; [2019]
    Keywords : Pollen data; compositional data; Dirichlet distribution; spatio-temporal reconstruction; Kronecker product; Gaussian Markov random field GMRF ; Markov Chain Monte Carlo MCMC ; Metropolis Hastings MH ; Metropolis adjusted Langevin algorithm MALA ; Mathematics and Statistics;

    Abstract : Given a pollen data set from Europe over a time period, the aim is to reconstruct the past land cover by interpolating from the pollen data values to a continuous map. The data is on compositional form with three vegetation categories; coniferous forest, broadleaved forest and open land. READ MORE

  5. 4. Land cover changes in Southern Sweden from the mid-Holocene to present day: insights for ecosystem service assessments

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Robert O'Dwyer; [2019]
    Keywords : Geography; Geographical Information Systems; GIS; Physical Geography; Götaland; Landscape Reconstruction Algorithm; Fossil Pollen; Ecosystem Services; Earth and Environmental Sciences;

    Abstract : 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. READ MORE

  6. 5. Omprojektering av parkeringsytor : en väg mot multifunktionella gröna ytor

    University essay from SLU/Dept. of Landscape Architecture, Planning and Management (from 130101)

    Author : Linn Carlsson; Daniel Björfors; Jessica Persson; [2019]
    Keywords : förtätning; ekosystemtjänster; dagvatten; parkeringsytor; klimatanpassning; Lomma kommun; hårdgjorda ytor; hållbart stadsbyggande; multifunktionella ytor;

    Abstract : Densification that takes place in both Sweden and the rest of the world can lead to the nature around the cities being protected but can also mean that greenery and good habitats within the cities are lost. In the discussion about densification, the handling of unused surfaces is a factor. READ MORE