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Auteur Gérôme Pignard
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Affiner la recherche Interroger des sources externesLarge-scale dynamics of a heterogeneous forest resource are driven jointly by geographically varying growth conditions, tree species composition and stand structure / Holger Wernsdörfer in Annals of Forest Science, Vol 69 n° 7 (October 2012)
Titre : Large-scale dynamics of a heterogeneous forest resource are driven jointly by geographically varying growth conditions, tree species composition and stand structure Type de document : Article/Communication Auteurs : Holger Wernsdörfer, Auteur ; Antoine Colin Année de publication : 2012 Article en page(s) : pp 829 - 844 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Statistiques
[Termes IGN] composition floristique
[Termes IGN] croissance des arbres
[Termes IGN] espèce végétale
[Termes IGN] gestion forestière durable
[Termes IGN] grande échelle
[Termes IGN] inventaire forestier national (données France)
[Termes IGN] strate végétaleRésumé : (auteur) Context: Forest resource projections are required as part of an appropriate framework for sustainable forest management. Suitable large-scale projection models are usually based on national forest inventory (NFI) data. However, sound projections are difficult to make for heterogeneous resources as they vary greatly with respect to the factors that are assumed to drive forest dynamics on a large spatial scale, e.g. geographically varying growth conditions (here represented by NFI regions), tree species composition (here broadleaf-dominated, conifer-dominated and broadleaf-conifer mixed stands) and stand structure (here high forest, coppice forest and high-coppice forest mixture).
Question and objective: Our question was how does the variance of forest dynamics parameters (i.e. growth, felling and mortality, and recruitment processes) and that of 20-year forest resource projections partition between these factors (NFI region, tree species composition and stand structure), including their interactions. Our objective was to capitalise on the suitability of an existing multi-strata, diameter class matrix model for the purposes of making projections for the highly heterogeneous French forest resource.
Methods: The model was newly calibrated for the entire territory of metropolitan France based on most recent NFI data, i.e. for years 2006–2008. The forest resource was divided into strata by crossing the factors NFI region, tree species composition and stand structure. The variance partitioning of the parameters and projections was assessed based on a model sensitivity analysis.
Results: Growth, felling and mortality varied mainly with NFI region and species composition. Recruitment varied mainly with NFI region and stand structure. All three factors caused variations in resource projections, but with unequal intensities. Factor impacts included first order and interaction effects.
Conclusions: We found, by considering both first order and interaction effects, that NFI region, species composition and stand structure are ecologically relevant factors that jointly drive the dynamics of a heterogeneous forest resource. Their impacts, in our study, varied depending on the forest dynamics process under consideration. Recruitment would appear to have a particularly great impact on resource changes over time.Numéro de notice : A2012-717 Affiliation des auteurs : IGN+Ext (2012-2019) Thématique : FORET Nature : Article DOI : 10.1007/s13595-012-0196-1 Date de publication en ligne : 22/03/2012 En ligne : https://doi.org/10.1007/s13595-012-0196-1 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=75562
in Annals of Forest Science > Vol 69 n° 7 (October 2012) . - pp 829 - 844[article]
Titre : Les indicateurs de gestion forestière durable à l'échelle nationale Type de document : Article/Communication Auteurs : Nabila Hamza, Auteur ; Gérôme Pignard, Auteur Année de publication : 2003 Article en page(s) : p. 23-25 Langues : Français (fre) Descripteur : [Termes IGN] biodiversité
[Termes IGN] forêt
[Termes IGN] France (administrative)
[Termes IGN] IFN cité
[Termes IGN] indicateur biologiqueRésumé : Le document "Les indicateurs de gestion durable des forêts françaises" dans sa version 2000, inclut pratiquement tous les indicateurs quantitatifs préconisés par les Conférences d'Helsinki (1993) et de Lisbonne (1998) et en comporte de nombreux autres, essentiellement dans le domaine de la diversité biologique. Numéro de notice : IFN_4213 Affiliation des auteurs : non IGN Thématique : BIODIVERSITE/FORET Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=72554
in Forêt entreprise > n° 150 (2003/2) . - p. 23-25[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité IFN-001-P000596 PER Revue Nogent-sur-Vernisson Archives périodiques Exclu du prêt
Titre : De la forêt de montagne ... aux forêts en montagne Type de document : Article/Communication Auteurs : Christian Barthod, Auteur ; Gérôme Pignard, Auteur Année de publication : 1996 Article en page(s) : 10 p. Langues : Français (fre) Descripteur : [Termes IGN] dendrométrie
[Termes IGN] forêt alpestreNuméro de notice : IFN_3966 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=72476
in Cahiers du Département de la santé des forêts > vol 1996 n° 5 (septembre 1996) . - 10 p.[article]
