Essays about: "kolcykeln"

Showing result 1 - 5 of 19 essays containing the word kolcykeln.

  1. 1. Precipitation variability modulates the terrestrial carbon cycle in Scandinavia

    University essay from Uppsala universitet/Luft-, vatten- och landskapslära

    Author : Ella Ek; [2021]
    Keywords : Terrestrial carbon cycle; NDVI; Precipitation variability; EOF analysis; Scandinavia; Terrestra kolcykeln; NDVI; Nederbördsvariation; EOF analys; Skandinavien;

    Abstract : Climate variability and the carbon cycle (C-cycle) are tied together in complex feedback loops and due to these complexities there are still knowledge-gaps of this coupling. However, to make accurate predictions of future climate, profound understanding of the C-cycle and climate variability is essential. READ MORE

  3. 2. Hur grönt är ett stadsträd? : ett stadsträds klimatavtryck ur ett livscykelperspektiv

    University essay from SLU/Dept. of Landscape Architecture, Planning and Management (from 130101)

    Author : Erik Lind; [2020]
    Keywords : klimatavtryck; stadsträd; livscykelanalys; LCA; växthusgasutsläpp; koldioxidupptag; kolförråd; kolsänka; Salix alba; Quercus rubra; Pinus sylvestris; negativa utsläpp; klimatförändringar;

    Abstract : I uppsatsen undersöks vad plantering av ett enskilt stadsträd har för effekt på växthusgasbalansen. Ämnet undersöks genom litteraturstudie och livscykelanalys av plantering av E-plantor av trädarterna Salix alba, Quercus rubra och Pinus sylvestris i plantskolestorlek alléträd 30-35 med rotklump i öppen parkmark i Helsingborg, Stockholm och Umeå. READ MORE

  4. 3. Linking Jet Stream Variability and the NAO to the Terrestrial Carbon Cycle in Europe

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Emma Rosengren; [2020]
    Keywords : Terrestrial; Carbon Cycle; Jet Latitude; Jet Speed; NAO; NDVI; Jordbunden; Kolcykel; Jetlatitud; Jethastighet; NAO; NDVI;

    Abstract : The terrestrial carbon cycle is a part of the global carbon cycle, where one important component is the terrestrial vegetation. Terrestrial vegetation largely controls the land surface carbon exchanges and leverage the atmospheric greenhouse gas concentrations, significantly affecting the trajectory of global warming. READ MORE

  5. 4. Assessing the biodiversity crisis within the Triassic-Jurassic boundary interval using redox sensitive trace metals and stable carbon isotope geochemistry

    University essay from Lunds universitet/Geologiska institutionen

    Author : Halla Margrét Viðarsdóttir; [2020]
    Keywords : Stenlille; Schandelah; redox conditions; C-isotopes; marine sediments; trace elements; enrichment factors; mass extinction; Triassic – Jurassic boundary; Earth and Environmental Sciences;

    Abstract : Around the Triassic-Jurassic-Boundary time interval, a severe mass extinction event occurred, which has been associated to volcanism of the Central Atlantic Magmatic Province (CAMP). Significant amounts of greenhouse gases as carbon dioxide (CO2) or methane (CH4) and other volatiles are suggested to have been released into the atmosphere, leading to global warming with subsequent impact on the biosphere. READ MORE

  6. 5. Effects of Salinization on Lake Metabolism

    University essay from Karlstads universitet/Institutionen för miljö- och livsvetenskaper (from 2013)

    Author : Emil Nordström; [2020]
    Keywords : Freshwater ecology; carbon flux; mesocosms; diurnal variation;

    Abstract : With rising salinity levels in many freshwaters across the globe caused by for example sealevel rise and de-icing salts, it becomes important to understand what effect it has on freshwater ecosystems, since the lakes and rivers themselves are important parts in the global carbon cycle. In this study I have looked at what effects increased salinity levels have on different lakes metabolism, specifically oxygen concentration and primary production. READ MORE