Journal article
Reconciling Top-Down and Bottom-Up Estimates of Ecosystem Respiration in a Mature Eucalypt Forest
NJ Noh, AA Renchon, J Knauer, V Haverd, J Li, A Griebel, CVM Barton, J Yang, D Sihi, SK Arndt, EA Davidson, MG Tjoelker, E Pendall
Journal of Geophysical Research Biogeosciences | AMER GEOPHYSICAL UNION | Published : 2024
DOI: 10.1029/2024JG008064
Abstract
Ecosystem respiration (Reco) arises from interacting autotrophic and heterotrophic processes constrained by distinct drivers. Here, we evaluated up-scaling of observed components of Reco in a mature eucalypt forest in southeast Australia and assessed whether a land surface model adequately represented all the fluxes and their seasonal temperature responses. We measured respiration from soil (Rsoil), heterotrophic soil microbes (Rh), roots (Rroot), and stems (Rstem) in 2018–2019. Reco and its components were simulated using the CABLE–POP (Community Atmosphere-Biosphere Land Exchange–Population Orders Physiology) land surface model, constrained by eddy covariance and chamber measurements and e..
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Awarded by Australian Research Council
Funding Acknowledgements
This research was supported by the Australian Research Council (DP170102766 and DP220102039) and TERN-OzFlux, an NCRIS enabled facility. We thank C. McNamara, V. Kumar and D. Metzen for their excellent support for experiments and data sets from EucFACE and Cumberland Plain TERN sites. Open access publishing facilitated by Western Sydney University, as part of the Wiley - Western Sydney University agreement via the Council of Australian University Librarians.