In situ soil COS exchange of a temperate mountain grassland under simulated drought.

ABSTRACT: During recent years, carbonyl sulfide (COS), a trace gas with a similar diffusion pathway into leaves as carbon dioxide (CO₂), but with no known "respiration-like" leaf source, has been discussed as a promising new approach for partitioning net ecosystem-scale CO₂ fluxes into photosynthesis and respiration. The utility of COS for flux partitioning at the ecosystem scale critically depends on the understanding of non-leaf sources and sinks of COS. This study assessed the contribution of the soil to ecosystem-scale COS fluxes under simulated drought conditions at temperate grassland in the Central Alps. We used transparent steady-state flow-through chambers connected to a quantum cascade laser spectrometer to measure the COS and CO₂ gas exchange between the s

SUBMITTER: Kitz F 

PROVIDER: S-EPMC5339329 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature