Essays about: "land cover product validation"

Found 4 essays containing the words land cover product validation.

  1. 1. Modelling gross primary production in semi-arid regions: effects on carbon uptake of intensive agriculture in southern Kenya

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Malin Ahlbäck; [2020]
    Keywords : Physical Geography; Ecosystem Analysis; GPP; Africa; Kenya; Land cover changes; Cropland; Remote sensing; Sentinel-2; Earth and Environmental Sciences;

    Abstract : Background and aim: Gross primary production (GPP) is the largest global carbon (C) flux and an important component for counteracting anthropogenic CO2 emissions, understanding vegetation dynamics, and sustaining universal human standards. Africa plays a prominent role in the global C cycle, though our understanding of GPP dynamics is largely hampered by a paucity of ground-based observations. READ MORE

  3. 2. 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

  4. 3. Automatic Detection of Low Passability Terrain Features in the Scandinavian Mountains

    University essay from KTH/Geodesi och satellitpositionering

    Author : Fredrik Ahnlén; [2019]
    Keywords : Classification; Fuzzy Logic; Fuzzy Inference System; Automatic Mapping; Terrain Features; Land Cover Mapping; Cartography; Shrub; Mire; Stony Ground; Klassificering; Fuzzy Logic; Fuzzy Inference System; Automatisk Kartering; Terrängföremål; Marktäcke; Kartografi; Videsnår; Sankmark; Stenig Mark;

    Abstract : During recent years, much focus have been put on replacing time consuming manual mappingand classification tasks with automatic methods, having minimal human interaction. Now it ispossible to quickly classify land cover and terrain features covering large areas to a digital formatand with a high accuracy. READ MORE

  5. 4. Comparison and validation of five land cover products over the African continent

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Ling Bai; [2010]
    Keywords : land cover product validation; land cover products; geography; classification algorithm; classification legend; Earth and Environmental Sciences;

    Abstract : Earth surface has always been an interesting scientific study area. it is tightly connected with other researches such as hydrology, ecosystem, atmosphere and climate change. READ MORE