Measurement of greenhouse gas flux from agricultural soils using static chambers.
J Vis Exp
; (90): e52110, 2014 Aug 03.
Article
em En
| MEDLINE
| ID: mdl-25146426
ABSTRACT
Measurement of greenhouse gas (GHG) fluxes between the soil and the atmosphere, in both managed and unmanaged ecosystems, is critical to understanding the biogeochemical drivers of climate change and to the development and evaluation of GHG mitigation strategies based on modulation of landscape management practices. The static chamber-based method described here is based on trapping gases emitted from the soil surface within a chamber and collecting samples from the chamber headspace at regular intervals for analysis by gas chromatography. Change in gas concentration over time is used to calculate flux. This method can be utilized to measure landscape-based flux of carbon dioxide, nitrous oxide, and methane, and to estimate differences between treatments or explore system dynamics over seasons or years. Infrastructure requirements are modest, but a comprehensive experimental design is essential. This method is easily deployed in the field, conforms to established guidelines, and produces data suitable to large-scale GHG emissions studies.
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Solo
/
Dióxido de Carbono
/
Metano
/
Óxido Nitroso
Tipo de estudo:
Guideline
Idioma:
En
Revista:
J Vis Exp
Ano de publicação:
2014
Tipo de documento:
Article