CO 2 fertilization, transpiration deficit and vegetation period drive the response of mixed broadleaved forests to a cha
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RESEARCH PAPER
CO2 fertilization, transpiration deficit and vegetation period drive the response of mixed broadleaved forests to a changing climate in Wallonia Louis de Wergifosse 1 & Frédéric André 1 & Hugues Goosse 1 & Steven Caluwaerts 2 & Lesley de Cruz 3 & Rozemien de Troch 3 & Bert Van Schaeybroeck 3 & Mathieu Jonard 1 Received: 5 December 2019 / Accepted: 19 May 2020 # INRAE and Springer-Verlag France SAS, part of Springer Nature 2020
Abstract & Key message The change in forest productivity was simulated in six stands in Wallonia (Belgium) following different climate scenarios using a process-based and spatially explicit tree growth model. Simulations revealed a strong and positive impact of the CO2 fertilization while the negative effect of the transpiration deficit was compensated by longer vegetation periods. The site modulated significantly the forest productivity, mainly through the stand and soil characteristics. & Context Forest net primary production (NPP) reflects forest vitality and is likely to be affected by climate change. & Aims Simulating the impact of changing environmental conditions on NPP and two of its main drivers (transpiration deficit and vegetation period) in six Belgian stands and decomposing the site effect. & Methods Based on the tree growth model HETEROFOR, simulations were performed for each stand between 2011 and 2100 using three climate scenarios and two CO2 modalities (constant vs time dependent). Then, the climate conditions, soils and stands were interchanged to decompose the site effect in these three components. Handling Editor: Céline Meredieu Contributions of the co-authors Conceptualization: Louis DE WERGIFOSSE, Mathieu JONARD; Methodology: Louis DE WERGIFOSSE, Mathieu JONARD; Resources: Steven CALUWAERTS, Lesley DE CRUZ, Rozemien DE TROCH, Bert VAN SCHAEYBROECK; Writing – original draft: Louis DE WERGIFOSSE; Writing – review & editing: Louis DE WERGIFOSSE, Frédéric ANDRE, Hugues GOOSSE, Bert VAN SCHAEYBROECK, Mathieu JONARD; Supervision: Hugues GOOSSE, Mathieu JONARD This article is part of the topical collection on Mensuration and modelling for forestry in a changing environment * Louis de Wergifosse [email protected]
Rozemien de Troch [email protected] Bert Van Schaeybroeck [email protected]
Frédéric André [email protected]
Mathieu Jonard [email protected]
Hugues Goosse [email protected] Steven Caluwaerts [email protected] Lesley de Cruz [email protected]
1
Earth and Life Institute, Université catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
2
Department of Geography, Ghent University, Ghent, Belgium
3
Department of Meteorological Research and Development, Royal Meteorological Institute of Belgium, Ukkel, Belgium
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Annals of Forest Science
(2020) 77:70
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Results In a changing climate with constant atmospheric CO2, NPP values remained constant due to a compensation of the negative effect of increased transpiration deficit by a positive impact of longer vegetation perio
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