Hidden carbon sink beneath desert
| Autor: | Richard A. Houghton, Yugang Wang, Yan Li, Li-Song Tang |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Hydrology
geography geography.geographical_feature_category fungi Carbon sink Carbon sequestration Arid Sink (geography) Carbon cycle chemistry.chemical_compound Geophysics chemistry parasitic diseases Dissolved organic carbon Carbon dioxide General Earth and Planetary Sciences geographic locations Groundwater Geology |
| Zdroj: | Geophysical Research Letters. 42:5880-5887 |
| ISSN: | 0094-8276 |
| DOI: | 10.1002/2015gl064222 |
| Popis: | For decades, global carbon budget accounting has identified a “missing” or “residual” terrestrial sink; i.e., carbon dioxide (CO2) released by anthropogenic activities does not match changes observed in the atmosphere and ocean. We discovered a potentially large carbon sink in the most unlikely place on earth, irrigated saline/alkaline arid land. When cultivating and irrigating arid/saline lands in arid zones, salts are leached downward. Simultaneously, dissolved inorganic carbon is washed down into the huge saline aquifers underneath vast deserts, forming a large carbon sink or pool. This finding points to a direct, rapid link between the biological and geochemical carbon cycles in arid lands which may alter the overall spatial pattern of the global carbon budget. |
| Databáze: | OpenAIRE |
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