Sökning: "climate gases"

Visar resultat 11 - 15 av 172 avhandlingar innehållade orden climate gases.

1. 11. A song of ice and mud : Interactions of microbes with roots, fauna and carbon in warming permafrost-affected soils

   Författare :Sylvain Monteux; Ellen Dorrepaal; Frida Keuper; James T. Weedon; Joshua Schimel; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; microbial communities; permafrost; functional limitations; rhizosphere; SOM decomposition; soil fauna; climate change; carbon dioxide;

   Sammanfattning : Permafrost-affected soils store a large quantity of soil organic matter (SOM) – ca. half of worldwide soil carbon – and currently undergo rapid and severe warming due to climate change. LÄS MER

3. 12. Microbial Communities in Boreal Peatlands : Responses to Climate Change and Atmospheric Nitrogen and Sulfur Depositions

   Författare :Magalí Martí Genero; Bo Svensson; Åsa Danielsson; Torben Christensen; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Microbial communities; methanogens; plant communities; peatland; temperature; nitrogen; long-term; field experiment; high-throughput sequencing; Microbiella samhällen; metanogener; växtsamhällen; myrar; torv; temperatur; kväve; långtid; fältexperiment; high-throughput-sekvensering;

   Sammanfattning : Myrmarker har en stor roll i regleringen av den globala kolbalansen och koncentrationerna av koldioxid och metan i atmosfären, vilket gör dem till speciellt viktiga ekosystem ur ett klimatförandringsperspektiv. Förändringar av myrmarker genom naturlig utveckling eller antropogen påverkan kan därför få långtgående störningar av myrars klimatreglerande funktion. LÄS MER

4. 13. Temporal climate impacts of using willow and logging residues for district heating in Sweden

   Författare :Torun Hammar; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Using bioenergy to replace fossil fuels has been adopted as a climate mitigation measure, since less greenhouse gases are expected to be released into the atmosphere. In Sweden, the share of bioenergy is relative high (about 23% of total consumption including peat), with a relatively large proportion originating from domestically produced forest biomass. LÄS MER

5. 14. Non-CO2 greenhouse gases, uncertainty and land-use competition

   Författare :Daniel Johansson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Kyoto protocol; energy system; integrated assessment; environmental economics; land use change; bioenergy; climate change; greenhouse gases; GWP;

   Sammanfattning : Over the past 250 years the concentrations of greenhouse gases in the atmosphere have increased drastically. It is close to scientific consensus that these changes have increased the temperature of the earth. LÄS MER

7. 15. MAKING TRADE-OFFS IN THE GREENHOUSE: Relative Price Changes, Non-CO2 Greenhouse Gases and Tropical Deforestation in Climate Policy

   Författare :Martin Persson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; GWP; discounting; RED; climate change; substitutability; Kyoto protocol; tropical deforestation; palm oil; biofuels; Amazon; climate policy; uncertainty;

   Sammanfattning : This thesis, consisting of five separate papers, is an inquiry into climate policy and the trade-offs that have to be made when formulating such policy. It covers three major topics: (1) the economics of choosing a climate policy target; (2) the economic merits of the Global Warming Potentials (GWPs), the metric governing the trade-off between abatement of different greenhouse gases (GHGs) in the current climate regime; and (3) the promises and challenges with including the GHG emissions from tropical deforestation in a future climate regime. LÄS MER