期刊名称：Revista Ibero-Americana de Ciências Ambientais
电子版ISSN：2179-6858
出版年度：2018
卷号：9
期号：5
语种：English
出版社：Escola Superior de Sustentabilidade
其他摘要：The determination of greenhouse gas emissions from wetlands are of great interest given the biogeochemistry these areas exhibit. We measure soil CO2 concentration and monthly fluxes on a tree island of the Northern Pantanal of Mato Grosso, Brazil, and estimate the role of soil as a carbon source or sink during high tide, low tide, flooding, and drought seasons. The average value of the CO2 fluxes in the wetland soil was 0.54 ± 0.30 g (CO2)·m- 2·h- 1 with the soil acting as a carbon source at -9.11 ton.·ha-1 over the one year cycle. Soil CO2 fluxes were significantly correlated with soil moisture and temperature at 5 cm depth. Soil CO2 concentrations reached more than 100 ppm. Soil carbon stocks did not correlate significantly with variables in this study, suggesting that non-measured variables can influence soil carbon dynamics.
Loading...
