Radiation and temperature drive diurnal variation of aerobic methane emissions from Scots pine canopy.

ABSTRACT: Methane emissions from plant foliage may play an important role in the global methane cycle, but their size and the underlying source processes remain poorly understood. Here, we quantify methane fluxes from the shoots of Scots pine trees, a dominant tree species in boreal forests, to identify source processes and environmental drivers, and we evaluate whether these fluxes can be constrained at the ecosystem-level by eddy covariance flux measurements. We show that shoot-level measurements conducted in forest, garden, or greenhouse settings; on mature trees and saplings; manually and with an automated CO₂-, temperature-, and water-controlled chamber system; and with multiple methane analyzers all resulted in comparable daytime fluxes (0.144 ± 0.019 to 0.375 ± 0.074 nmol CH_4<

SUBMITTER: Kohl L 

PROVIDER: S-EPMC10756279 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature