Essays about: "canopy height model"

Showing result 1 - 5 of 21 essays containing the words canopy height model.

  1. 1. Forest Aboveground Biomass Monitoring in Southern Sweden Using Random Forest Modelwith Sentinel-1, Sentinel-2, and LiDAR Data

    University essay from Högskolan i Gävle/Samhällsbyggnad

    Author : Wan Ni Lin; [2023]
    Keywords : Aboveground biomass; Sentinel-1; Sentinel-2; LiDAR; random forest; GEE;

    Abstract : Monitoring carbon stock has emerged as a critical environmental problem among several worldwide organizations and collaborations in the context of global warming and climate change. This study seeks to provide a remote sensing solution based on three types of data, to explore the feasibility and reliability of estimating aboveground biomass (AGB) in order to improve the efficiency of monitoring carbon stock. READ MORE

  3. 2. Evaluation of the variation in albedo over snow-covered forest in Northern Sweden and Finland

    University essay from Göteborgs universitet/Institutionen för geovetenskaper

    Author : Klara Hugosson; [2022-05-20]
    Keywords : ;

    Abstract : The effect of albedo variability induced by meteorological parameters in snow-covered forested areas at local scale is poorly known. Few meteorological stations measure albedo, even though the effect on albedo caused by land use changes is well known. READ MORE

  4. 3. How do forest characteristics relate to brown bear (Ursus arctos) density? : focusing on basal area, age, height, and field layer

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Jeanette Jonsson; [2022]
    Keywords : brown bear; ursus arctos; linear mixed model; forest characteristics; bear density;

    Abstract : Brown bear (Ursus arctos) is one of our most common large carnivores. The historic population in Sweden has been reduced due to conflicts with humans. The diet of the brown bear varies with the season and location. READ MORE

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

    University essay from SLU/Dept. of Agricultural Research for Northern Sweden

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

    Abstract : 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. READ MORE

  6. 5. Topographic controls of drought impact on Swedish primary forests

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Johanna Asch; [2021]
    Keywords : Physical geography; ecosystem analysis; primary forest; boreal forest; drought impact; topography; drainage; climate change; random forest; terrain index; Earth and Environmental Sciences;

    Abstract : Anthropogenic climate change has increased the frequency of extreme drought events and leads to “hotter” droughts. Topography controls plant available water and site-specific climatic conditions. Drought sensitivity may therefore vary over short distances between wet and dry locations of the landscape. READ MORE