Salt marsh vegetation as a carbonyl sulfide (COS) source to the atmosphere
| Autor: | Mary E. Whelan, Robert C. Rhew, Dong-Ha Min |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Hydrology
Atmospheric Science geography Batis maritima Biogeochemical cycle geography.geographical_feature_category biology chemistry.chemical_element Sulfur cycle biology.organism_classification Photosynthesis Sulfur Sink (geography) chemistry.chemical_compound chemistry Salt marsh Environmental chemistry Environmental science General Environmental Science Carbonyl sulfide |
| Zdroj: | Atmospheric Environment. 73:131-137 |
| ISSN: | 1352-2310 |
| DOI: | 10.1016/j.atmosenv.2013.02.048 |
| Popis: | Carbonyl sulfide (COS) is the most abundant and longest-lived reduced sulfur compound in the atmo- sphere; changes in its atmospheric concentration could significantly affect global climate and the biogeochemical sulfur cycle. The largest sink of COS in the troposphere is its destruction in plant leaves by the enzymes involved in photosynthesis. In this study, net fluxes of COS were measured from a coastal salt marsh on a subtropical barrier island on the Texas shore of the Gulf of Mexico. We find net emissions from sites with the common salt marsh plant Batis maritima compared to the net uptake from vegetated plots of most previously investigated biomes. The magnitude of the COS production from vegetated plots in this study was twice the emissions of soil-only salt marsh plots. This is the first time that emissions of COS have been found to be significantly enhanced by the presence of vegetation compared to soil alone. COS fluxes exceeded þ110 pmol m |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect