Warming Diminishes the Day-Night Discrepancy in the Apparent Temperature Sensitivity of Ecosystem Respiration.

ABSTRACT: Understanding the sensitivity of ecosystem respiration (ER) to increasing temperature is crucial to predict how the terrestrial carbon sink responds to a warming climate. The temperature sensitivity of ER may vary on a diurnal basis but is poorly understood due to the paucity of observational sites documenting real ER during daytime at a global scale. Here, we used an improved flux partitioning approach to estimate the apparent temperature sensitivity of ER during the daytime (E_0,day) and nighttime (E_0,night) derived from multiyear observations of 189 FLUXNET sites. Our results demonstrated that E_0,night is significantly higher than E_0,day across all biomes, with significant seasonal variations in the day-night discrepancy in the temperature sens

SUBMITTER: Li N 

PROVIDER: S-EPMC11644270 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature