Sökning: "mapping vegetation index"

Visar resultat 1 - 5 av 17 uppsatser innehållade orden mapping vegetation index.

1. 1. Estimating active layer thickness at the high Arctic study site Zackenberg from remotely sensed ground subsidence

   Kandidat-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Författare :Lotte Wendt; [2021]
   Nyckelord :active layer thickness; DInSAR; subsidence; permafrost; Zackenberg; CALM; Earth and Environmental Sciences;

   Sammanfattning : The active layer thickness (ALT) is an indicator of permafrost thaw, which potentially leads to the release of large amounts of greenhouse gases under global warming, and thus could further amplify climate change. The thaw depth of the active layer also governs seasonal surface deformation, caused by the volume change between ice to water, which poses risks for slope stability and infrastructure foundations. LÄS MER

3. 2. UAV based hyperspectral grassland monitoring in an alpine shallow erosion area : lessons learnt from classifying vegetation indicating shallow erosion risk

   Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Författare :John Peitz; [2019]
   Nyckelord :Physical Geography; Ecosystem Analysis; Shallow Erosion; Blaiken; UAV; Hyperspectral Imaging; Alps; Grassland; Spectral Signatures; Geomatics; Earth and Environmental Sciences;

   Sammanfattning : UAV based hyperspectral grassland monitoring in an alpine shallow erosion area Recent research in the Alps found that a reduction in grassland management is correlated to an increase in a certain type of shallow erosion areas called blaiken. This change also entails changes to the dominant grassland vegetation. LÄS MER

4. 3. Indexbaserad kartering av markfuktighet

   Kandidat-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

   Författare :John Jernberg; [2018]
   Nyckelord :GIS; GIS-analys; våtmarker; LiDAR; topografiska index; kartering; fjärranalys;

   Sammanfattning : Det växande behovet av metoder för tillförlitlig identifiering och kartering av markfuktighet i landskapet inom naturvård och skogsbruk ställer ökade krav på kartmaterialet. Dagens kartor är generellt baserade på flygbildstolkning vilket ofta resulterar i en ofullständig och generaliserad redovisning av våtmarker. LÄS MER

5. 4. Comparison of multi-temporal and multispectral Sentinel-2 and Unmanned Aerial Vehicle imagery for crop type mapping

   Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Författare :Stephania Zabala Ramos; [2017]
   Nyckelord :classification; Random Forest; precision agriculture; UAV; remote sensing; Micasense; GEM; Earth and Environmental Sciences;

   Sammanfattning : Precision Agriculture aims to maximize crop production and the efficiency of land use to meet the increased demand for food while minimizing environmental impact and economic cost of food production. Crop type maps are needed for Precision Agriculture applications and remote sensing techniques are an efficient way to produce this information. LÄS MER

7. 5. Mapping tree canopy cover in the semi-arid Sahel using satellite remote sensing and Google Earth imagery

   Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Författare :Abdalla Eltayeb Abdalla Mohamed; [2017]
   Nyckelord :Sahel; physical geography and ecosystem analysis; tree cover; NDVI; Google Earth; Landsat 8; geomatics; Earth and Environmental Sciences;

   Sammanfattning : Tree vegetation is an essential element in the daily life of the people in the Sahel region of Africa. It is also considered as a robust indicator of the Sahel ecosystem status and health. In this thesis, a method to estimate tree vegetation was developed and used in mapping the tree canopy cover in semi-arid Sahel. LÄS MER