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Soil methane production, anaerobic and aerobic oxidation in porewater of wetland soils of the Minjiang River Estuarine, China
Wang, Weiqi (Fujian Normal University. Institute of Geography)
Zeng, Congsheng (Fujian Normal University. Institute of Geography)
Sardans i Galobart, Jordi (Centre de Recerca Ecològica i Aplicacions Forestals)
Wang, Chun (Fujian Normal University. Institute of Geography)
Tong, Chuan (Fujian Normal University. Institute of Geography)
Peñuelas, Josep (Centre de Recerca Ecològica i Aplicacions Forestals)

Data: 2018
Resum: Wetlands are important sources of methane emission. Anaerobic oxidation, aerobic oxidation and production of methane as well as dissolved methane are important processes of methane metabolism. We studied methane metabolism and the soil influencing factors. Potential soil methane production, anaerobic oxidation and aerobic oxidation rates, and dissolved methane in soil porewater changed seasonally and the annual average was 21. 1 ± 5. 1 μg g⁻¹d⁻¹, 11. 0 ± 3. 9 μg g⁻¹d⁻¹, 20. 9 ± 5. 8 μg g⁻¹d⁻¹, and 62. 9 ± 20. 6 μmol l⁻¹, respectively. Potential soil methane production and anaerobic and aerobic oxidation were positively correlated among themselves and with soil pH and negatively correlated with soil redox potential (Eh). Potential soil methane production and aerobic and anaerobic oxidation rates were negatively related to pore soil methane concentration. Thus, the more water-saturated the soil (the lower Eh), the higher its capacity to produce methane. The potential soil capacity for methane oxidation was higher both in the same anaerobic circumstances and when the soil was suddenly subjected to aerobic conditions. The results of this study suggested a buffer effect in the methane balance in wetland areas. The environmental circumstances favoring methane production are also favorable for anaerobic methane oxidation.
Nota: Número d'acord de subvenció EC/FP7/610028
Nota: Número d'acord de subvenció MINECO/CGL2016-79835-P
Nota: Número d'acord de subvenció AGAUR/2014/SGR-274
Drets: Tots els drets reservats
Llengua: Anglès.
Document: article ; recerca ; acceptedVersion
Matèria: Methane production ; Methane anaerobic oxidation ; Methane aerobic oxidation ; Dissolved methane Minjiang ; River estuarine wetland
Publicat a: Wetlands, Vol. 38, issue 3 (June 2018) , p. 627–640, ISSN 0277-5212

DOI: 10.1007/s13157-018-1006-9


Disponible a partir de: 2019-06-30
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Disponible a partir de: 2019-06-30
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Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals) > Imbalance-P
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 Registre creat el 2018-12-05, darrera modificació el 2019-02-02



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