Intercomparison of methods to estimate gross primary production based on CO₂ and COS flux measurements.

ABSTRACT: Separating the components of ecosystem-scale carbon exchange is crucial in order to develop better models and future predictions of the terrestrial carbon cycle. However, there are several uncertainties and unknowns related to current photosynthesis estimates. In this study, we evaluate four different methods for estimating photosynthesis at a boreal forest at the ecosystem scale, of which two are based on carbon dioxide (CO₂) flux measurements and two on carbonyl sulfide (COS) flux measurements. The CO₂-based methods use traditional flux partitioning and artificial neural networks to separate the net CO₂ flux into respiration and photosynthesis. The COS-based methods make use of a unique 5-year COS flux data set and involve two different approaches to dete

SUBMITTER: Kohonen KM 

PROVIDER: S-EPMC7613647 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature