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L’expansion séculaire des forêts françaises est dominée par l’accroissement du stock sur pied et ne sature pas dans le temps / Anaïs Denardou-Tisserand in Revue forestière française, vol 69 n° 4-5 (2017)
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Titre : L’expansion séculaire des forêts françaises est dominée par l’accroissement du stock sur pied et ne sature pas dans le temps Titre original : The centuries-long expansion of French forests, driven prevalently by increased growing stock, shows no sign of saturation Type de document : Article/Communication Auteurs : Anaïs Denardou-Tisserand , Auteur ; Jean-Christophe Hervé (1961-2017)
, Auteur ; Jean-Luc Dupouey, Auteur ; Jean Bir
, Auteur ; Timothée Audinot
, Auteur ; Jean-Daniel Bontemps
, Auteur
Année de publication : 2017 Projets : ARBRE / AgroParisTech (2007 -) Article en page(s) : pp 319 - 339 Note générale : bibliographie Langues : Français (fre) Descripteur : [Termes IGN] forêt
[Termes IGN] France (végétation)
[Termes IGN] inventaire forestier national (données France)
[Termes IGN] Massif central (France)
[Termes IGN] variabilité
[Termes IGN] variation séculaire
[Vedettes matières IGN] Inventaire forestierRésumé : (auteur) The expansion of French forests both in surface area and growing stock is explored based on National Forest Inventory data and Daubrée’s statistics (1908). The author studied their geographic variability under various ownership schemes (private, state or other regulated public forests) and depending on their composition (hardwood/softwood). Between 1908 and 2010, the increase in surface area was 5.1 million hectares (+ 50 %) with the fastest expansion rate in the Massif Central, and hardwoods gaining ground twice as fast as softwoods, although their overall proportions remained unchanged. Between 1975 and 2010, growing stock (+ 59 %, + 930 million cubic metres) developed three times more quickly than surface area but varied considerably between geographic locations: with area taking the lead in southern France and Brittany while in the Massif Central growing stock was preeminent, pointing to a certain continuity in relation to previous expansion of forest area. Over the same period, private forests and other regulated public forests experienced similar relative surface area variations (+ 20 %), but private forests accumulated twice as much growing stock (+ 80 %) as public forests. Between 1987 and 1994, private deciduous forests increased the most (+ 280 000 ha and + 105 million cubic metres), followed by private coniferous forests (+ 60 000 ha and + 63 million cubic metres). In the recent decade (2006-2015), increases in areas and stocks have continued at a pace of respectively 120 000 ha/year and 44 million cubic metres suggesting that this trend will continue over coming decades. Numéro de notice : A2017-884 Affiliation des auteurs : LIF+Ext (2012-2019) Thématique : FORET Nature : Article nature-HAL : ArtAvecCL-RevueNat DOI : 10.4267/2042/67864 Date de publication en ligne : 12/06/2018 En ligne : https://doi.org/10.4267/2042/67864 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=91834
in Revue forestière française > vol 69 n° 4-5 (2017) . - pp 319 - 339[article]
[article]
Titre : Forêts, l'appel 2.0 du SIG Type de document : Article/Communication Auteurs : Fanny Perrin d'Arloz, Auteur ; Steve Carpentier, Auteur ; Xavier Fodor, Auteur Année de publication : 2017 Article en page(s) : pp 20 - 31 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique
[Termes IGN] aménagement forestier
[Termes IGN] application web
[Termes IGN] ArcMap
[Termes IGN] biodiversité végétale
[Termes IGN] bois
[Termes IGN] couvert forestier
[Termes IGN] données localisées
[Termes IGN] forêt privée
[Termes IGN] forêt publique
[Termes IGN] gestion durable
[Termes IGN] incendie de forêt
[Termes IGN] lutte contre l'incendie
[Termes IGN] protection de l'environnement
[Termes IGN] SIG nomadeRésumé : (Auteur) Cette fois, l'appel sera mobile, car les forestiers utilisent depuis longtemps le SIG. Sans lui, il serait difficile de gérer efficacement des territoires vastes et vivants, donc mouvants. D'autant que les missions de gestion désormais durable de cette ressource naturelle gagnent en variété et s'étendent bien au-delà des lisières. L'arrivée d'applications mobiles permet de faciliter ce travail en consultant ou en renseignant les géodonnées directement in situ, sous la canopée. Bienvenue dans la forêt 2.0 ! Numéro de notice : A2017-084 Affiliation des auteurs : non IGN Thématique : BIODIVERSITE/FORET/GEOMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84387
in SIGmag > n° 12 (mars 2017) . - pp 20 - 31[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 147-2017011 RAB Revue Centre de documentation En réserve L003 Disponible 147-2017012 RAB Revue Centre de documentation En réserve L003 Disponible A hybrid genetic algorithm with local optimiser improves calibration of a vegetation change cellular automata model / Rachel Whitsed in International journal of geographical information science IJGIS, vol 31 n° 3-4 (March-April 2017)
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Titre : A hybrid genetic algorithm with local optimiser improves calibration of a vegetation change cellular automata model Type de document : Article/Communication Auteurs : Rachel Whitsed, Auteur ; Lisa T. Smallbone, Auteur Année de publication : 2017 Article en page(s) : pp 717 - 737 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] algorithme génétique
[Termes IGN] arbre (flore)
[Termes IGN] automate cellulaire
[Termes IGN] croissance des arbres
[Termes IGN] dynamique de la végétation
[Termes IGN] étalonnage des données
[Termes IGN] inventaire forestier (techniques et méthodes)
[Termes IGN] modèle de croissance végétale
[Termes IGN] optimisation (mathématiques)
[Termes IGN] sous-bois
[Termes IGN] Victoria (Australie)
[Vedettes matières IGN] ForesterieRésumé : (Auteur) Cellular automata (CA) models are commonly used to model vegetation dynamics, with the genetic algorithm (GA) being one method of calibration. This article investigates different GA settings, as well as the combination of a GA with a local optimiser to improve the calibration effort. The case study is a pattern-calibrated CA to model vegetation regrowth in central Victoria, Australia. We tested 16 GA models, varying population size, mutation rate, and level of allowable mutation. We also investigated the effect of applying a local optimiser, the Nelder‒Mead Downhill Simplex (NMDS) at GA convergence. We found that using a decreasing mutation rate can reduce computational cost while avoiding premature GA convergence, while increasing population size does not make the GA more efficient. The hybrid GA-NMDS can also reduce computational cost compared to a GA alone, while also improving the calibration metric. We conclude that careful consideration of GA settings, including population size and mutation rate, and in particular the addition of a local optimiser, can positively impact the efficiency and success of the GA algorithm, which can in turn lead to improved simulations using a well-calibrated CA model. Numéro de notice : A2017-081 Affiliation des auteurs : non IGN Thématique : FORET/INFORMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/13658816.2016.1231315 En ligne : http://dx.doi.org/10.1080/13658816.2016.1231315 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84344
in International journal of geographical information science IJGIS > vol 31 n° 3-4 (March-April 2017) . - pp 717 - 737[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-2017021 RAB Revue Centre de documentation En réserve L003 Disponible 079-2017022 RAB Revue Centre de documentation En réserve L003 Disponible Mapping spatial distribution of forest age in China / Yuan Zhang in Earth and space science, vol 4 n° 3 (March 2017)
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Titre : Mapping spatial distribution of forest age in China Type de document : Article/Communication Auteurs : Yuan Zhang, Auteur ; Yitong Yao, Auteur ; Xuhui Wang, Auteur ; Yongwen Liu, Auteur ; Shilong Piao, Auteur Année de publication : 2017 Article en page(s) : pp 108 - 116 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Végétation
[Termes IGN] carte forestière
[Termes IGN] Chine
[Termes IGN] Cupressaceae
[Termes IGN] distribution spatiale
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] forêt ancienne
[Termes IGN] hauteur des arbres
[Termes IGN] incertitude des données
[Termes IGN] inventaire forestier (techniques et méthodes)
[Termes IGN] inventaire forestier étranger (données)
[Termes IGN] peuplement forestier
[Termes IGN] Pinophyta
[Termes IGN] Pinus massoniana
[Termes IGN] puits de carboneRésumé : (auteur) Forest stand age is a meaningful metric, which reflects the past disturbance legacy, provides guidelines for forest management practices, and is an important factor in qualifying forest carbon cycles and carbon sequestration potential. Reliable large-scale forest stand age information with high spatial resolutions, however, is difficult to obtain. In this study, we developed a top-down method to downscale the provincial statistics of national forest inventory data into 1 km stand age map using climate data and light detection and ranging-derived forest height. We find that the distribution of forest stand age in China is highly heterogeneous across the country, with a mean value of ~42.6 years old. The relatively young stand age for Chinese forests is mostly due to the large proportion of newly planted forests (0–40 years old), which are more prevailing in south China. Older forests (stand age > 60 years old) are more frequently found in east Qinghai-Tibetan Plateau and the central mountain areas of west and northeast China, where human activities are less intensive. Among the 15 forest types, forests dominated by species of , with the exception of Cunninghamia lanceolata stands, have the oldest mean stand age (136 years), whereas Pinus massoniana forests are the youngest (18 years). We further identified uncertainties associated with our forest age map, which are high in west and northeast China. Our work documents the distribution of forest stand age in China at a high resolution which is useful for carbon cycle modeling and the sustainable use of China's forest resources. Numéro de notice : A2107-277 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1002/2016EA000177 En ligne : https://doi.org/10.1002/2016EA000177 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85298
in Earth and space science > vol 4 n° 3 (March 2017) . - pp 108 - 116[article]Reconstructing forest canopy from the 3D triangulations of airborne laser scanning point data for the visualization and planning of forested landscapes / Jari Vauhkonen in Annals of Forest Science, vol 74 n° 1 (March 2017)
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Titre : Reconstructing forest canopy from the 3D triangulations of airborne laser scanning point data for the visualization and planning of forested landscapes Type de document : Article/Communication Auteurs : Jari Vauhkonen, Auteur ; Roope Ruotsalainen, Auteur Année de publication : 2017 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] analyse multicritère
[Termes IGN] biomasse forestière
[Termes IGN] canopée
[Termes IGN] coupe (sylviculture)
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] géovisualisation
[Termes IGN] modèle de simulation
[Termes IGN] participation du public
[Termes IGN] processus de hiérarchisation analytique
[Termes IGN] reconstruction 3D
[Termes IGN] relation topologique 3D
[Termes IGN] SIG participatif
[Termes IGN] simulation numérique
[Termes IGN] troncRésumé : (Auteur) We present a data-driven technique to visualize forest landscapes and simulate their future development according to alternative management scenarios. Gentle harvesting intensities were preferred for maintaining scenic values in a test of eliciting public’s preferences based on the simulated landscapes.
Context : Visualizations of future forest landscapes according to alternative management scenarios are useful for eliciting stakeholders’ preferences on the alternatives. However, conventional computer visualizations require laborious tree-wise measurements or simulators to generate these observations.
Aims : We describe and evaluate an alternative approach, in which the visualization is based on reconstructing forest canopy from sparse density, leaf-off airborne laser scanning data.
Methods : Computational geometry was employed to generate filtrations, i.e., ordered sets of simplices belonging to the three-dimensional triangulations of the point data. An appropriate degree of filtering was determined by analyzing the topological persistence of the filtrations. The topology was further utilized to simulate changes to canopy biomass, resembling harvests with varying retention levels. Relative priorities of recreational and scenic values of the harvests were estimated based on pairwise comparisons and analytic hierarchy process (AHP).
Results : The canopy elements were co-located with the tree stems measured in the field, and the visualizations derived from the entire landscape showed reasonably realistic, despite a low numerical correspondence with plot-level forest attributes. The potential and limitations to improve the proposed parameterization are discussed.
Conclusion : Although the criteria to evaluate the landscape visualization and simulation models were not conclusive, the results suggest that forest scenes may be feasibly reconstructed based on data already covering broad areas and readily available for practical applications.Numéro de notice : A2017-041 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article DOI : 10.1007/s13595-016-0598-6 Date de publication en ligne : 06/07/2017 En ligne : http://doi.org/10.1007/s13595-016-0598-6 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84199
in Annals of Forest Science > vol 74 n° 1 (March 2017)[article]Characterizing vegetation canopy structure using airborne remote sensing data / Debsunder Dutta in IEEE Transactions on geoscience and remote sensing, vol 55 n° 2 (February 2017)
PermalinkForest diversity promotes individual tree growth in central European forest stands / Juliette Chamagne in Journal of applied ecology, vol 54 n° 1 (February 2017)
PermalinkMultiview marker-free registration of forest terrestrial laser scanner data with embedded confidence metrics / David Kelbe in IEEE Transactions on geoscience and remote sensing, vol 55 n° 2 (February 2017)
PermalinkPermalinkContributions méthodologiques pour la caractérisation des milieux par imagerie optique et lidar / Nesrine Chehata (2017)
PermalinkForest Products Annual Market Review 2015-2016 / United Nations Economic Commission for Europe (2017)
PermalinkLearning-based spatial-temporal superresolution mapping of forest cover with MODIS images / Yihang Zhang in IEEE Transactions on geoscience and remote sensing, vol 55 n° 1 (January 2017)
PermalinkLe mémento inventaire forestier, édition 2017 / Institut national de l'information géographique et forestière (2012 -) (2017)
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PermalinkTélédétection pour l'observation des surfaces continentales, Volume 3. Observation des surfaces continentales par télédétection 1 / Nicolas Baghdadi (2017)
PermalinkTélédétection pour l'observation des surfaces continentales, Volume 5. Observation des surfaces continentales par télédétection 3 / Nicolas Baghdadi (2017)
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