Sökning: "soil organic matter"
Visar resultat 1 - 5 av 103 avhandlingar innehållade orden soil organic matter.
- Detta är en avhandling från Stockholm : Department of Physical Geography and Quaternary Geology (INK), Stockholm University
Sammanfattning : High latitude terrestrial ecosystems are considered key components in the global carbon (C) cycle and hold large reservoirs of soil organic carbon (SOC). Much of this is stored as soil organic matter (SOM) in permafrost soils and peat deposits and is vulnerable to remobilization under future global warming. LÄS MER
2. Chlorinated organic pollutants in soil and groundwater at chlorophenol-contaminated sawmill sitesDetta är en avhandling från Umeå : Kemi
Sammanfattning : Mixtures of chlorinated organic pollutants can be found in the soils at chlorophenol-contaminated sawmill, including (inter alia) polychlorinated phenols (CPs), phenoxyphenols (PCPPs), diphenyl ethers (PCDEs), dibenzofurans (PCDFs) and dioxins (PCDDs). These hydrophobic compounds have low water solubility and hence low mobility as truly dissolved compounds. LÄS MER
- Detta är en avhandling från ; Department of Chemistry and Biotechnology, Swedish University of Agricultural Sciences
Sammanfattning : Soil organic matter is the largest carbon (C) pool in the terrestrial C cycle, and soil CO₂ emissions surpass anthropogenic emissions from fossil fuel combustion by a factor of nine. Therefore, mechanisms controlling C stabilisation in soils and its feedback to climate change are widely debated. LÄS MER
4. Permafrost carbon in a changing Arctic On periglacial landscape dynamics, organic matter characteristics, and the stability of a globally significant carbon poolDetta är en avhandling från Stockholm : Department of Physical Geography, Stockholm University
Sammanfattning : Organic matter (OM) in arctic permafrost ground contains about twice as much carbon (C) as is currently present in the atmosphere. Climate change is particularly strong in the Arctic, and could cause a considerable part of the OM in permafrost to thaw out, decompose, and be released as greenhouse gases; further enhancing global warming. LÄS MER
5. Compositional clues to sources and sinks of terrestrial organic matter transported to the Eurasian Arctic shelfDetta är en avhandling från Stockholm : Department of Environmental Science and Analytical Chemistry, Stockholm University
Sammanfattning : The amount of organic carbon (OC) present in Siberian Arctic permafrost soils is estimated at twice the amount of carbon currently in the atmosphere. The shelf seas of the Arctic Ocean receive large amounts of this terrestrial OC from Eurasian Arctic rivers and from coastal erosion. LÄS MER