Essays about: "se nee"

Showing result 16 - 20 of 28 essays containing the words se nee.

  1. 16. Land- atmosphere exchange of carbon dioxide in a high Arctic fen : importance of wintertime fluxes

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Anna Lindstein; [2015]
    Keywords : geography; physical geography; ecosystem analysis; NEE; eddy covariance; Arctic; CO2; wintertime flux; Zackenberg; Earth and Environmental Sciences;

    Abstract : Global warming is predicted to have a major impact on the ecosystems over the polar latitudes including the Arctic region which is thought to be especially sensitive to changes in climate. So far, the research studying greenhouse gases in the Arctic has primarily been focused on the short and intense growing season when carbon flux is mostly driven by plants and soil microorganisms. READ MORE

  3. 17. Temperaturens och den fotosyntetiskt aktiva strålningens effekt på avgång och inlagring av kol på en dikad torvjord

    University essay from SLU/Dept. of Soil and Environment

    Author : Kristian Österlund; [2013]
    Keywords : torv; markrespiration; NEE; fotosyntes;

    Abstract : The decomposition of organic carbon in drained peat soils is a major source of carbon di-oxide in Sweden. A big part of these drained peat soils are used in agriculture and it is a big challenge to slow down their decomposition. READ MORE

  4. 18. The temporal and spatial variability of soil respiration in boreal forests : a case study of Norunda forest, Central Sweden

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Elisabeth Vogel; [2013]
    Keywords : boreal forests; soil respiration; carbon dioxide exchange; automatic chamber measurements; Eddy covariance; Wavelet analysis; Norunda; physical geography and ecosystem analysis; Earth and Environmental Sciences;

    Abstract : Previous studies have shown that, contrary to expectations, the boreal forest at the Norunda research site in central Sweden is acting as a carbon source. Therefore, the aim of this study was to investigate the spatial and temporal variability of soil carbon dioxide (CO2) efflux (FSoil) in order to provide insights into its role for the net carbon balance of this forest. READ MORE

  5. 19. The response of European forests to the change in summer temperatures : a comparison between normal and warm years, from 1996 to 2006

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Sarah Loudin; [2012]
    Keywords : Physical Geography; Geography; eddy covariance; gross primary product; ecosystem respiration; summer temperatures; Earth and Environmental Sciences;

    Abstract : This study shows how six different European forests react during the summer to abnormally warm temperatures, from 1996 to 2006. With the forecasted increase of summer temperatures over Europe, the carbon balance of forests – photosynthesis (GPP), ecosystem respiration and Net Ecosystem Exchange - in likely to change. READ MORE

  6. 20. 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