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Ingrid Seynave Alain Bailly Philippe Balandier Jean-Daniel Bontemps Priscilla Cailly Thomas Cordonnier Christine Deleuze Jean-François Dhôte Christian Ginisty François Lebourgeois Dominique Merzeau Eric Paillassa Sandrine Perret Claudine Richter Céline Meredieu 《Annals of Forest Science》2018,75(2):48
Key message
The diversity of forest management systems and the contrasted competition level treatments applied make the experimental networks of the GIS Coop, a nationwide testing program in the field of emerging forestry topics within the framework of the ongoing global changes.Context
To understand the dynamics of forest management systems and build adapted growth models for new forestry practices, long-term experiment networks remain more crucial than ever.Aims
Two principles are at the basis of the experimental design of the networks of the Scientific Interest Group Cooperative for data on forest tree and stand growth (GIS Coop): contrasted and extreme silvicultural treatments in diverse pedoclimatic contexts.Methods
Various forest management systems are under study: regular and even-aged stands of Douglas fir, sessile and pedunculate oaks, Maritime and Laricio pines, mixed stands of sessile oak, European silver fir, and Douglas fir combined with other species. Highly contrasted stand density regimes, from open growth to self-thinning, are formalized quantitatively.Results
One hundred and eighty-five sites representing a total of 1206 plots have been set up in the last 20 years, where trees are measured regularly (every 3 to 10 years). The major outputs of these networks for research and management are the calibration/validation of growth and yield models and the drawing up of forest management guides.Conclusion
The GIS Coop adapts its networks so that they can contribute to develop growth models that explicitly integrate pedoclimatic factors and thus also contribute to research on the sustainability of ecosystems under environmental and socio-economic changes.3.
L. Augusto M. R. Bakker C. Morel C. Meredieu P. Trichet V. Badeau D. Arrouays C. Plassard D. L. Achat A. Gallet‐Budynek D. Merzeau D. Canteloup M. Najar J. Ranger 《European Journal of Soil Science》2010,61(6):807-822
Soil scientists are receiving increasing numbers of requests for expert advice on soil over large areas, but at a high resolution. We tested the use of the soil data contained in sources of information that are not directly accessible (referred to as ‘grey’ data) to accomplish this task. We collected grey data about a pine forest, which is currently the subject of drastic, and questionable, changes in management, including a rapid rate of biomass removal. These grey data (from 266 sites) were compared with soil data obtained directly from our field sampling (83 sites). Our comparisons showed that the two sources of data were consistent when the variables concerned had been sampled and analysed by using methods shared by the soil scientists such as particle‐size distribution. Conversely, significant discrepancies appeared for variables for which different methods existed, such as for CEC. For the latter, using corrective equations gave contrasting results, depending on the soil variable. The final database was used to characterize the soils of the study region. Results showed that soils of the study region (mainly sandy podzols and arenosols) were acidic and particularly oligotrophic. Several important properties (CEC, phosphorus cycling, pH, bulk density) were related to the organic fraction or carbon (C) content of soils. For instance, CEC values were linearly and exclusively dependent on C content. The most oligotrophic sites of the study region were clearly not suitable for the new intensive management of the forest in the long term. For the other sites, the question remains open because some specific data are still needed before drawing conclusions. We conclude that as a complement to conventional soil studies, the grey literature is a useful source of data and information to characterize soils at a regional scale. 相似文献
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To&#;go Maude Castagneyrol Bastien Jactel Herv&#; Morin Xavier Meredieu Celine 《European Journal of Forest Research》2022,141(1):165-175
European Journal of Forest Research - The effects of tree mixture on stand productivity are usually examined using a substitutive approach whereby productivity in mixed stands is compared to... 相似文献
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Olfa Shaiek Denis Loustau Pierre Trichet Céline Meredieu Beya Bachtobji Salah Garchi Mohamed Hédi EL Aouni 《Annals of Forest Science》2011,68(3):443-452
• Introduction
In order to predict the biomass of aerial components of maritime pine stands (Pinus pinaster Ait.), generalized allometric equations were developed using data collected from the southern and northern margins of its geographical area. 相似文献6.
Samuel Dufour-Kowalski Benoît Courbaud Philippe Dreyfus Céline Meredieu François de Coligny 《Annals of Forest Science》2012,69(2):221-233
Context
Forest scientists build models to simulate stand growth and forests dynamics. Dedicated computer tools are often developed to implement these models in order to run silvicultural scenarios and explore simulation results. 相似文献7.
Antoine Brin Céline Meredieu Dominique Piou Hervé Brustel Hervé Jactel 《Forest Ecology and Management》2008
Although the volume of dead wood is commonly acknowledged as an indicator of biodiversity in sustainable forest management schemes, only few data are available for plantation forests. To evaluate the volume and qualify the diversity of woody debris along a chronosequence of maritime pine plantations, we sampled downed woody debris, snags and stumps in 143 stands of different ages. To test the hypothesis that the pattern of dead wood accumulation mainly results from silvicultural operations, we developed a predictive model. It combined an empirical growth model evaluating the amount of dead wood produced by successive thinnings with a decay function that estimated the loss of dead wood with time. 相似文献
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Patrick Vallet Céline Meredieu Ingrid Seynave Thierry Bélouard Jean-François Dhôte 《Forest Ecology and Management》2009
Species choice is potentially an important management decision for increasing carbon stocks in forest ecosystems. The substitution of a slow-growing hardwood species (Quercus petraea) by a fast-growing conifer plantation (Pinus nigra subsp. laricio) was studied in central France. Simulations of carbon stocks in tree biomass were conducted using stand growth models Fagacées for sessile oak and PNL for Corsican pine. The changes in soil carbon were assessed using the Century model and data from two European soil monitoring networks: 16 km × 16 km grid and RENECOFOR. Carbon in wood products was assessed with life cycle analysis and lifespan of final products. However, only carbon stocks and their variation were accounted for: effects of energy-consuming materials or fossil fuel substitution are excluded from the analysis. To compare the growth of these two types of forest stands, an important part of the study was to assess the productivity of both species at the same site, using National Forest Inventory data. 相似文献
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Improving models of forest nutrient export with equations that predict the nutrient concentration of tree compartments 总被引：1，自引：0，他引：1
Laurent Augusto Céline Meredieu Didier Bert Pierre Trichet Annabel Porté Alexandre Bosc Frédéric Lagane Denis Loustau Sylvain Pellerin Frédéric Danjon Jacques Ranger Jacques Gelpe 《Annals of Forest Science》2008,65(8):808-808
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Annabel J. Porté Jean-Charles Samalens Raphaël Dulhoste Rémi Teissier Du Cros Alexandre Bosc Céline Meredieu 《Annals of Forest Science》2009,66(3):307-307
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