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Development of forest carbon stock and wood production in the Czech Republic until 2060 / Emil Cienciala in Annals of Forest Science, Vol 65 n° 6 (September 2008)  

Public [article]  inAnnals of Forest Science > Vol 65 n° 6 (September 2008) . - n° 603 Titre : Development of forest carbon stock and wood production in the Czech Republic until 2060 Titre original : Évolution du stock de carbone forestier et de la production de bois en République Tchèque jusqu'en 2060 Type de document : Article/Communication Auteurs : Emil Cienciala, Auteur ; Emil Cienciala, Auteur ; Zuzana Exnerová, Auteur ; Mart-Jan Schelhaas, Auteur Année de publication : 2008 Article en page(s) : n° 603 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] changement climatique [Termes IGN] gestion forestière durable [Termes IGN] modèle de simulation [Termes IGN] puits de carbone [Termes IGN] République Tchèque [Vedettes matières IGN] Végétation et changement climatique Résumé : (auteur) This study describes the scenarios of likely development of carbon pools in managed forest ecosystems of the Czech Republic. The analysis was based on a matrix scenario model (EFISCEN), adopting a novel parameterization based on forest stand site types and forest typology. The model was constrained by practical management rules as prescribed by the Czech Forestry Act and used to assess production potential for the next five decades under three management and three climate scenarios. The analysis provided data on carbon pool development, including both tree biomass and soil compartments. For the tested scenarios of sustainable forest management (wood removals not exceeding increment) the model indicated a slight increase of soil carbon pool. For the possibly largest removals (maximum sustainable felling scenario), soil carbon stabilized within two or three decades reaching a mean value of about 8.1 kg/m2 for. At the same time, the mean carbon stock held in biomass reached about 10.2 kg/m2 including belowground parts. No decline of soil carbon was observed for any of the tested scenarios. We conclude that it is reasonable to assume that soil carbon is not a source of carbon under the current management constraints as implemented in the Czech forestry practice. Numéro de notice : A2008-695 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1051/forest:2008043 Date de publication en ligne : 04/09/2008 En ligne : https://www.afs-journal.org/articles/forest/abs/2008/06/f07205/f07205.html Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=70776 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
IFN-DIR-P000123	PER	Revue	Nogent-sur-Vernisson	Salle périodiques	Exclu du prêt

Organic carbon stocks and stock changes of forest biomass in Belgium derived from forest inventory data in a spatially explicit approach / Suzanna Lettens in Annals of Forest Science, Vol 65 n° 6 (September 2008)  

Public [article]  inAnnals of Forest Science > Vol 65 n° 6 (September 2008) . - n° 604 Titre : Organic carbon stocks and stock changes of forest biomass in Belgium derived from forest inventory data in a spatially explicit approach Titre original : Évolution des stocks de carbone dans la biomasse des forêts belges entre 1984 et 2000 Type de document : Article/Communication Auteurs : Suzanna Lettens, Auteur ; Suzanna Lettens, Auteur ; Jos Van Orshoven, Auteur ; Dominique Perrin, Auteur ; Bas Van Wesemael, Auteur ; Bart Muys, Auteur Année de publication : 2008 Article en page(s) : n° 604 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] Belgique [Termes IGN] bioénergie [Termes IGN] biomasse forestière [Termes IGN] inventaire forestier étranger (données) [Termes IGN] puits de carbone [Termes IGN] teneur en carbone [Vedettes matières IGN] Ecologie forestière Résumé : (auteur) Carbon sequestration in forest ecosystems is an important though still uncertain process in the global greenhouse gas balance. We computed biomass organic carbon (BOC) stocks of spatially explicit forested landscape units (LSU) in Belgium based on data collected in the regional forest inventories of 1984 (Wallonia region only) and 2000 (Wallonia and Flanders). C stock changes between 1984 and 2000 were estimated for Wallonia. The total BOC pool stored in Belgian forests in 2000 amounts to 57.8 Mt C in 6 222 km2, or 10.0 kg C m-2 in broadleaf, 9.5 kg C m-2 in coniferous and 8.7 kg C m-2 in mixed forest. Based on previous soil organic carbon (SOC) analysis for the same LSU, BOC and SOC stock per LSU appeared only weakly correlated. The total BOC sequestration between 1984 and 2000 equals 5.7 Mt C over an area of 5 107 km2, resulting in a flux of 0.07 kg C m-2 y-1. The BOC content of broadleaf forest in Wallonia increased with 6%, of coniferous forest with 32% and of mixed forest with 11%. The observed regional differences in BOC stocks and in BOC sequestration rates are explained by the forest age-class distribution and site productivity. The strength of the spatially explicit approach lies in the fact that BOC and SOC data originating from diverse sampling strategies can be combined for spatial or temporal comparison of C stocks. Numéro de notice : A2008-696 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1051/forest:2008034 Date de publication en ligne : 19/07/2008 En ligne : https://www.afs-journal.org/articles/forest/abs/2008/06/f07215/f07215.html Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=70777 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
IFN-DIR-P000123	PER	Revue	Nogent-sur-Vernisson	Salle périodiques	Exclu du prêt

Predicting decay and round-wood end use volume in trembling aspen (Populus tremuloides Michx.) / Robert Schneider in Annals of Forest Science, Vol 65 n° 6 (September 2008)  

Public [article]  inAnnals of Forest Science > Vol 65 n° 6 (September 2008) . - n° 608 Titre : Predicting decay and round-wood end use volume in trembling aspen (Populus tremuloides Michx.) Titre original : Prévision du volume de bois carié et de la répartition par produits chez le peuplier faux-tremble (Populus tremuloides Michx.) Type de document : Article/Communication Auteurs : Robert Schneider, Auteur ; Martin Riopel, Auteur ; David Pothier, Auteur ; Lévis Côté, Auteur Année de publication : 2008 Article en page(s) : n° 608 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] bois sur pied [Termes IGN] gestion forestière [Termes IGN] modèle mathématique [Termes IGN] Populus tremuloides [Termes IGN] Québec (Canada) [Termes IGN] régression linéaire [Termes IGN] volume en bois Résumé : (auteur) In Quebec (Canada), predicting net merchantable volume of standing trees is essential to adjust stumpage fees. Furthermore, round-wood end use is important in the provincial forest management context because it is used to split the allowable annual cut among the different mill types. A method relying on linear, binomial and cumulative logit regressions is proposed to predict both decay volume and round-wood end use volume. Tree age, height and quality, as well as ecological region, stand origin and presence of Phellinus tremulae (Bond.) Bond. & Boriss. and Ceratocystis fimbriata (Ellis & Halst.) fungi are the main factors that contribute to the presence and the proportion of decayed merchantable volume. Once the net merchantable volume is estimated, its division into round-wood end use is estimated through a series of steps involving the presence of Phellinus tremulae, saw log height, stem quality and size as explanatory variables. The first step is a multinomial regression which predicts the number of end uses (pulp wood, low-grade saw logs, saw logs, low-grade veneer, and veneer) that are present in the stem. A series of logistic regressions then determines the presence of each end use, with linear regressions predicting the round-wood volume of each end use. Numéro de notice : A2008-697 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1051/forest:2008042 Date de publication en ligne : 04/09/2008 En ligne : https://www.afs-journal.org/articles/forest/abs/2008/06/f07223/f07223.html Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=70781 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
IFN-DIR-P000123	PER	Revue	Nogent-sur-Vernisson	Salle périodiques	Exclu du prêt

Interactive responses of Quercus suber L. seedlings to light and mild water stress: effects on morphology and gas exchange traits / Jaime Puértolas in Annals of Forest Science, Vol 65 n° 6 (September 2008)  

Public [article]  inAnnals of Forest Science > Vol 65 n° 6 (September 2008) . - n° 611 Titre : Interactive responses of Quercus suber L. seedlings to light and mild water stress: effects on morphology and gas exchange traits Titre original : Réponses interactives de semis de Quercus suber L. à la lumière et à un stress hydrique modéré : effets sur la morphologie et sur les caractéristiques des échanges gazeux Type de document : Article/Communication Auteurs : Jaime Puértolas, Auteur ; Marta Pardos, Auteur ; María Dolores Jiménez, Auteur ; Ismael Aranda, Auteur ; José Alberto Pardos, Auteur Année de publication : 2008 Article en page(s) : n° 611 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Végétation [Termes IGN] diagnostic foliaire [Termes IGN] ombre [Termes IGN] photosynthèse [Termes IGN] Quercus suber [Termes IGN] stress hydrique Résumé : (auteur) The combined effect of water stress and light on seedlings of forest species is a key factor to determine the best silvicultural and afforestation practices in the Mediterranean area. The aims of this work was (1) to determine the optimal light level for the early development of cork oak seedlings under mild water stress and (2) to test if the combined effect of water stress and light followed the trade-off, the facilitation or the orthogonal hypothesis. Shade reduced instantaneous photosynthetic rates and water use efficiency in cork oak. However, seedlings grown under moderate shade (15% of full sunlight) were capable to accumulate similar amount of biomass than those grown under more illuminated environments by increasing their specific leaf area. Absolute differences in net photosynthesis between light treatments were higher in well watered than in water stressed seedlings. However, the impact of both factors on overall growth was orthogonal. We concluded that cork oak development is impaired under deep shade (5% of full sunlight) but it can be optimal under moderate shade (15% of full sunlight) even under moderate water stress. Implications of these patterns on regeneration, cultivation and afforestation of cork oak are discussed. Numéro de notice : A2008-698 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1051/forest:2008044 Date de publication en ligne : 04/09/2008 En ligne : https://www.afs-journal.org/articles/forest/abs/2008/06/f08038/f08038.html Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=70784 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
IFN-DIR-P000123	PER	Revue	Nogent-sur-Vernisson	Salle périodiques	Exclu du prêt