El Nino-Southern Oscillation forcing on carbon and water cycling in a Bornean tropical rainforest.

ABSTRACT: Carbon dioxide and water vapor exchanges between tropical forest canopies and the atmosphere through photosynthesis, respiration, and evapotranspiration (ET) influence carbon and water cycling at the regional and global scales. Their inter- and intra-annual variations are sensitive to seasonal rhythms and longer-timescale tropical climatic events. In the present study, we assessed the El Niño-Southern Oscillation (ENSO) influence on ET and on the net ecosystem exchange (NEE), using eddy-covariance flux observations in a Bornean rainforest over a 10-y period (2010-2019) that included several El Niño and La Niña events. From flux model inversions, we inferred ecophysiological properties, notably the canopy stomatal conductance and "big-leaf" maximum carboxylation rate (V_{cmax25_BL}

SUBMITTER: Takamura N 

PROVIDER: S-EPMC10589656 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature