Semi-empirical modeling of abiotic and biotic factors controlling ecosystem respiration across eddy covariance sites
2010
Migliavacca, Mirco | Reichstein, Markus | Richardson, Andrew D. | Colombo, Roberto | Sutton, Mark A. | Lasslop, Gitta | Wohlfahrt, Georg | Tomelleri, Enrico | Carvalhais, Nuno | Cescatti, Alessandro | Mahecha, Miguel Dario | Montagnani, Leonardo | Papale, Dario | Zaehle, Sönke | Arain, M Altaf | Arneth, Almut | Black, T Andrew | Dore, Sabina | Gianelle, Damiano | Helfter, Carole | Hollinger, David | Kutsch, Werner L | Law, Beverly E. | Lafleur, Peter M | Nouvellon, Yann | Rebmann, Corinna | da Rocha, Humberto R. | Rodeghiero, Mirco | Olivier, Roupsard | Sebastià, Maria-Teresa | Seufert, Guenther | Soussana, Jean-Francoise | van Der Molen, Michiel K | Remote Sensing of Environmental Dynamics ; Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB) | Department of Biogeochemical Integration [Jena] ; Max Planck Institute for Biogeochemistry (MPI-BGC) ; Max-Planck-Gesellschaft-Max-Planck-Gesellschaft | Department of Organismic and Evolutionary Biology [Cambridge] (OEB) ; Harvard University | Edinburgh Research Station ; Centre for Ecology and Hydrology | Institute of Ecology ; Leopold Franzens Universität Innsbruck - University of Innsbruck | Faculdade de Ciências e Tecnologia = School of Science & Technology (FCT NOVA) ; Universidade Nova de Lisboa = NOVA University Lisbon (NOVA) | JRC Institute for Environment and Sustainability (IES) ; European Commission - Joint Research Centre [Ispra] (JRC) | Department of Environmental Systems Science [ETH Zürich] (D-USYS) ; Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich) | Servizi Forestali ; Provincia Autonoma di Bolzano, Agenzia per l'Ambiente | DISAFRI ; Università degli studi della Tuscia = Tuscia University [Viterbo] (UNITUS) | Biogeochemical Systems Department [Jena] ; Max Planck Institute for Biogeochemistry (MPI-BGC) ; Max-Planck-Gesellschaft-Max-Planck-Gesellschaft | School of Geography & Earth Sciences ; McMaster University [Hamilton, Ontario] | Department of Physical Geography and Ecosystem Science [Lund] ; Skane University Hospital [Lund] | Faculty of Land and Food Systems ; University of British Columbia [Canada] (UBC) | School of Forestry [Flagstaff] ; Northern Arizona University [Flagstaff] | Centro di Ecologia Alpina ; Fondazione Edmund Mach - Edmund Mach Foundation [Italie] (FEM) | NE Research Station ; USDA Forest Service | Institut für Agrarrelevante Klimaforschung ; Johann Heinrich von Thünen-Institut = Thünen Institute | College of Forestry [Corvallis] ; Oregon State University (OSU) | 20- Department of Geography ; Trent University | Département Performances des systèmes de production et de transformation tropicaux (Cirad-PERSYST) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad) | Department Biogeochemical Processes [Jena] ; Max Planck Institute for Biogeochemistry (MPI-BGC) ; Max-Planck-Gesellschaft-Max-Planck-Gesellschaft | Micrometeorology Group [Bayreuth] ; Universität Bayreuth [Deutschland] = University of Bayreuth [Germany] = Université de Bayreuth [Allemagne] | Department of Atmospheric Sciences [São Paulo] ; Universidade de São Paulo = University of São Paulo (USP) | Centro Agronómico Tropical de Investigación y Enseñanza - Tropical Agricultural Research and Higher Education Center (CATIE) | Agronomical Engineering School ; Universitat de Lleida | Laboratory of Plant Ecology and Botany ; Centre de Ciència i Tecnologia Forestal de Catalunya (CTFC) | Institut National de la Recherche Agronomique (INRA) | Department of Hydrology and Geo-Environmental Sciences [Amsterdam] ; Vrije Universiteit Amsterdam [Amsterdam] (VU) | CarboEuropeIP; FAO-GTOS-TCO; iLEAPS; Max Planck Institute for Biogeochemistry; National Science Foundation; University of Tuscia; US Department of Energy; University of Milano-Bicocca; Model-Data Integration Group of the Max-Planck Institute for Biogeochemistry
International audience
Show more [+] Less [-]English. In this study we examined ecosystem respiration (RECO) data from 104 sites belonging to FLUXNET, the global network of eddy covariance flux measurements. The main goal was to identify the main factors involved in the variability of RECO: temporally and between sites as affected by climate, vegetation structure and plant functional type (PFT) (evergreen needleleaf, grasslands, etc.). We demonstrated that a model using only climate drivers as predictors of RECO failed to describe part of the temporal variability in the data and that the dependency on gross primary production (GPP) needed to be included as an additional driver of RECO. The maximum seasonal leaf area index (LAIMAX) had an additional effect that explained the spatial variability of reference respiration (the respiration at reference temperature Tref=15°C, without stimulation introduced by photosynthetic activity and without water limitations), with a statistically significant linear relationship (r2=0.52 p<0.001, n=104) even within each PFT. Besides LAIMAX, we found that the reference respiration may be explained partially by total soil carbon content. For undisturbed temperate and boreal forest a negative control of the total nitrogen deposition on the reference respiration was also identified. We developed a new semi-empirical model incorporating abiotic factors (climate), recent productivity (daily GPP), general site productivity and canopy structure (LAIMAX) which performed well in predicting the spatio-temporal variability of RECO, explaining >70% of the variance for most vegetation types. Exceptions include tropical and Mediterranean broadleaf forests and deciduous broadleaf forests. Part of the variability in respiration that could not be described by our model could be attributed to a range of factors, including phenology in deciduous broadleaf forests and management practices in grasslands and croplands.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by Institut national de la recherche agronomique