Sökning: "remote sensing"

Visar resultat 1 - 5 av 359 uppsatser innehållade orden remote sensing.

  1. 1. Remote Sensing Based Pre-Season Yellow Rust Early Warning in Oromia, Ethiopia

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

    Författare :Chinatsu Endo; [2021]
    Nyckelord :yellow rust; modeling; prediction; early warning; remote sensing; geography; geographical information systems; GIS; Agriculture and Food Sciences; Earth and Environmental Sciences;

    Sammanfattning : Yellow rust (Puccinia striiformis f. sp. Tritici) is a crop disease caused by a fungus that regularly infects wheat and causes yield loss in Ethiopia. The disease has a significant impact on the country’s crop production, food security, health, and socioeconomic well-being. LÄS MER

  2. 2. Using remote sensing and land abandonment as a proxy for long-term human out-migration. A Case Study: Al-Hassakeh Governorate, Syria

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

    Författare :Berit Mohr; [2021]
    Nyckelord :geography; GIS; remote sensing; Syria; vegetation indices; land abandonment; Earth and Environmental Sciences;

    Sammanfattning : The topic of human migration and displacement has become more important in recent years and will continue to do so in the following decades. Voices become louder claiming that climate change is a driving factor for increased displacement and migration. LÄS MER

  3. 3. Using Sentinel-2 Satellite Images to Estimate Traits of Forage Grasslands

    Master-uppsats, SLU/Dept. of Agricultural Research for Northern Sweden

    Författare :Niklas Zeiner; [2021]
    Nyckelord :Remote sensing; Forage grasslands; Sentinel-2; Dry matter yield; Canopy average height; Total leaf chlorophyll content; Partial least squares; Support vector machines;

    Sammanfattning : In this project, regression models based on data from field measurements and spectral information extracted from satellite imagery were used to estimate traits of forage grasslands; dry matter yield, canopy average height and total leaf chlorophyll. Four fields at SLUs Röbäcksdalen field station were sampled on 22 occasions and a total of 198 samples, including measurement of the highest plant, canopy height, leaf chlorophyll content, canopy spectral reflectance and biomass were collected. LÄS MER

  4. 4. 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

  5. 5. “Looking for the trees in the forest“ An attempt to finding the best segmentation-based methodology to discriminate deciduous trees in the Dubbarp area, Sweden

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

    Författare :Mihai Patrascu; [2021]
    Nyckelord :Physical Geography and Ecosystem analysis; segmentation analysis; tree crown recognition; eCognition; Scania; Geomatics; Earth and Environmental Sciences;

    Sammanfattning : Finding a solution to automatically identify tree crowns in has been a well discussed topic in the academic community. Different ideas have been put to practice, with researches mainly targeting coniferous forests. In a global context, papers concerning deciduous trees are rare and their results differ in relation to their respective study zone. LÄS MER