Anomalous wet summers and rising atmospheric CO₂ concentrations increase the CO₂ sink in a poorly drained forest on permafrost.

ABSTRACT: At the northern high latitudes, rapid warming, associated changes in the hydrological cycle, and rising atmospheric CO₂ concentrations, [CO₂], are observed at present. Under rapid environmental changes, it is important to understand the current and future trajectories of the CO₂ budget in high-latitude ecosystems. In this study, we present the importance of anomalous wet conditions and rising [CO₂] on the long-term CO₂ budget based on two decades (2003-2022) of quasicontinuous measurements of CO₂ flux at a poorly drained black spruce forest on permafrost peat in interior Alaska. The long-term CO₂ budget for the black spruce forest was a small sink of -53 ± 63 g C m^-2 y^-1. The CO₂ s

SUBMITTER: Ueyama M 

PROVIDER: S-EPMC11536150 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature