Essays about: "microtopography"

Found 5 essays containing the word microtopography.

  1. 1. GIS and remote sensing based mapping of microtopography and vegetation composition in a boreal mire complex

    University essay from SLU/Dept. of Forest Ecology and Management

    Author : Nils Helge Havertz; [2023]
    Keywords : Microtopography modelling; Remote sensing; Boreal mixed mires; Object Based Image Analysis OBIA ; random forest RF ;

    Abstract : Small scale variations in mire surface elevation referred to as microtopography are fundamental characteristics of mire ecosystems especially in the boreal region. Microtopography commonly classified into hummocks and hollows play a major role in several ecological, hydrological and biogeochemical processes including vegetation composition and carbon and methane dynamics. READ MORE

  3. 2. Växthusgasflöden från restaurerad torvmark : en jämförelse mellan en restaurerad torvtäkt och en orörd myr i Store Mosse nationalpark 7 år efter återvätning

    University essay from SLU/Dept. of Soil and Environment

    Author : Karin Halldin; [2022]
    Keywords : vitmossa; sphagnum; vattennivå; marktemperatur; vegetation; PAR; kammarmätningar; högupplösta mätningar; kolsänka;

    Abstract : Den globala uppvärmningen ökar. För att dämpa denna ökning behöver världens växthusgasutsläpp minska. När torvmarker dikas ut för industrier går de från att vara kolsänkor till att vara kolkällor. För att få tillbaka torvmarkers funktion som kolsänka restaureras dem, främst genom återvätning. READ MORE

  4. 3. Consumption of the organic layer in southern Sweden during fire events and correlations with the Canadian Forest Fire Weather Index (FWI) risk ratings

    University essay from SLU/Southern Swedish Forest Research Centre

    Author : Blake Mccallum Jordan; [2013]
    Keywords : fire; organic layer consumption; Canadian Fire Weather Index FWI ; ; Sweden;

    Abstract : The occurrence and thickness of organic layers in forests can significantly influence fire behavior. Complete understanding of the consumption of these layers during fire events is a knowledge gap that exists in southern Sweden. In this region, sixteen burned sites were measured for fermentation and humus layer thickness. READ MORE

  5. 4. Spatiotemporal variation of net methane emissions and its causes across an ombrotrophic peatland : a site study from Southern Sweden

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Amelie Lindgren; [2013]
    Keywords : temporal variation; spatial variation; Methane; geography; physical geography; ombrotrophic peatland; Earth and Environmental Sciences;

    Abstract : Methane emissions from natural wetlands are an important contributor to methane levels in the atmosphere. These emissions are highly variable in time and space, even within sites. Further understanding of this variation is vital to successfully model the overall methane emissions from wetlands. READ MORE

  6. 5. Warming alters photosynthetic rates of sub-boreal peatland vegetation

    University essay from SLU/Southern Swedish Forest Research Centre

    Author : Arvo Aljaste; [2011]
    Keywords : Peatlands; CO2 uptake; Climate change; microtopography;

    Abstract : Boreal peatlands are important in the global carbon cycle. Despite coveringonly 3% of the global land area, peatlands store approximately one third of all soilcarbon. Temperature is one of the major drivers in peatland carbon cycling as itaffects both plant production and CO2 fluxes from soils. READ MORE