Sökning: "Forage grasslands"

Hittade 2 uppsatser innehållade orden Forage grasslands.

  1. 1. 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

  3. 2. Effekt av ras och säsong på nötkreaturs avbetningsgrad av konkurrenskraftiga betesmarksväxter

    L3-uppsats, SLU/Dept. of Animal Environment and Health

    Författare :Jannicke Bertilsson; [2006]
    Nyckelord :väneko; charolais; bete; naturbetesmark; betesselektion; hävd; betesdjur; ras; tidpunkt; nötkreatur; kvigor; lantras; avbetningsgrad; älggräs; veketåg; tuvtåtel; klibbal; fuktig; försommar; högsommar; sensommar; avbetningsgrad; beteshöjd;

    Sammanfattning : Grasslands which have been actively managed for a long time and which in modern times have not been subject to cultivation such as fertilization are called semi-natural grasslands. These rare and species-rich areas hold an ecological, biological and historical value and if the management stops these areas will likely diminish. LÄS MER