Descripteur
Termes IGN > sciences naturelles > sciences de la vie > biologie > botanique > botanique systématique > Tracheophyta > Spermatophytina
SpermatophytinaSynonyme(s)phanérogame |
Documents disponibles dans cette catégorie (1190)
![](./images/expand_all.gif)
![](./images/collapse_all.gif)
Etendre la recherche sur niveau(x) vers le bas
Variation in irradiance, soil features and regeneration patterns in experimental forest canopy gaps / Urša Vilhar in Annals of Forest Science, vol 72 n° 2 (March - april 2015)
![]()
[article]
Titre : Variation in irradiance, soil features and regeneration patterns in experimental forest canopy gaps Type de document : Article/Communication Auteurs : Urša Vilhar, Auteur ; Dušan Roženbergar, Auteur ; Primož Simončič, Auteur ; Jurij Diaci, Auteur Année de publication : 2015 Article en page(s) : pp 253 - 266 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Végétation
[Termes IGN] Acer pseudoplatanus
[Termes IGN] éclairement énergétique
[Termes IGN] Fagus (genre)
[Termes IGN] peuplement mélangé
[Termes IGN] plantation forestière
[Termes IGN] régénération (sylviculture)
[Termes IGN] solNuméro de notice : A2015-428 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article DOI : 10.1007/s13595-014-0424-y Date de publication en ligne : 01/10/2014 En ligne : https://doi.org/10.1007/s13595-014-0424-y Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=77017
in Annals of Forest Science > vol 72 n° 2 (March - april 2015) . - pp 253 - 266[article]Non-invasive forest litter characterization using full-wave inversion of microwave radar data / Frédéric André in IEEE Transactions on geoscience and remote sensing, vol 53 n° 2 (February 2015)
![]()
[article]
Titre : Non-invasive forest litter characterization using full-wave inversion of microwave radar data Type de document : Article/Communication Auteurs : Frédéric André, Auteur ; Mathieu Jonard, Auteur ; Sébastien Lambot, Auteur Année de publication : 2015 Article en page(s) : pp 828 - 840 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] caractérisation
[Termes IGN] déchet organique
[Termes IGN] Fagus (genre)
[Termes IGN] forêt
[Termes IGN] forme d'onde pleine
[Termes IGN] humidité du sol
[Termes IGN] image radar
[Termes IGN] litière
[Termes IGN] radar pénétrant GPR
[Termes IGN] rétrodiffusion
[Termes IGN] sol forestier
[Termes IGN] télédétection en hyperfréquenceRésumé : (Auteur) Litter is acknowledged to affect microwave remote sensing data over forests, and accurate quantification of litter radiative properties is essential for proper retrieval of forest soil water content and forest canopy biophysical characteristics from satellite or airborne sensors. Furthermore, detailed characterization of forest soil organic horizons is of paramount importance for ecological studies and for carbon cycle and global changerelated studies. Ultrawideband ground-penetrating radar (GPR) data acquired above beech forest litter were used to analyze the effects of litter on the backscattering and investigate the ability of GPR to quantitatively characterize the properties of the forest floor. Radar measurements were performed over different litter configurations (i.e., single layers of recently fallen litter (OL) or of fragmented litter (OF), and combined OL-OF layers) and thicknesses. Radar data were processed through full-wave inversion. Over the considered frequency range (0.8-4.0 GHz), attenuation of the radar signal increased as both frequency and litter thickness increase, due to scattering and dielectric losses. These effects were accounted for in the radar model through frequency dependence of litter apparent electrical conductivity. Good agreement (RMSE = 9.5 × 10-3 m) was observed between estimated and measured litter thicknesses. Radar data inversions provided reliable estimates of litter electromagnetic properties, with relative dielectric permittivity values around 1.2 and 3.9 for OL and OF litters, respectively, and corresponding values of 0.032 and 0.080 Sm-1 for litter apparent electrical conductivity at 4.0 GHz. These results show great promise for the use of GPR for noninvasive characterization of forest litter. Numéro de notice : A2015-102 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2014.2328776 En ligne : https://doi.org/10.1109/TGRS.2014.2328776 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=75620
in IEEE Transactions on geoscience and remote sensing > vol 53 n° 2 (February 2015) . - pp 828 - 840[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 065-2015021 RAB Revue Centre de documentation En réserve L003 Disponible
Titre : Document d’objectifs Natura 2000 Chenaie verte et juniperaie de la Tartagine : PSIC FR9402004 Communes de Vallica et de Moltifao (Haute-Corse), version 2015 Type de document : Rapport Auteurs : A. Rinascita, Auteur ; Centre permanent d'initiatives pour l'environnement, Auteur Editeur : Bastia : Préfecture de Haute Corse Année de publication : 2015 Langues : Français (fre) Descripteur : [Termes IGN] chênaie
[Termes IGN] habitat d'intérêt communautaire
[Termes IGN] Haute-Corse
[Termes IGN] juniperaie
[Termes IGN] Populus alba
[Termes IGN] Quercus ilex
[Termes IGN] Salix alba
[Termes IGN] site Natura 2000
[Vedettes matières IGN] Ecologie forestièreNuméro de notice : 17298 Affiliation des auteurs : non IGN Thématique : FORET Nature : Rapport Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83000 Documents numériques
en open access
Document d’objectifs Natura 2000 Chenaie verte et juniperaie de la TartagineAdobe Acrobat PDFEstimating forest biomass from TerraSAR-X stripmap radargrammetry / Svein Solberg in IEEE Transactions on geoscience and remote sensing, vol 53 n° 1 (January 2015)
![]()
[article]
Titre : Estimating forest biomass from TerraSAR-X stripmap radargrammetry Type de document : Article/Communication Auteurs : Svein Solberg, Auteur ; Gertrud Riegler, Auteur ; Philippe Nonin, Auteur Année de publication : 2015 Article en page(s) : pp 154 - 161 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] analyse comparative
[Termes IGN] biomasse aérienne
[Termes IGN] image TerraSAR-X
[Termes IGN] inventaire forestier (techniques et méthodes)
[Termes IGN] Norvège
[Termes IGN] Picea (genre)
[Termes IGN] radargrammétrieRésumé : (Auteur) Radargrammetry has a potential for forest inventories, based on the relationship between the canopy height model (CHM) and the forest variables such as biomass. The objective of this study is to describe the relationship between above-ground biomass and a stripmap TerraSAR-X radargrammetry CHM, with emphasis on accuracy and straightness of the relationship. The study was carried out in a spruce forest in south Norway, comprising biomass data from 145 plots of 250 m2 within 21 selected stands. Above-ground biomass for the plots ranged from 0 to 338 t/ha. We derived a digital surface model (DSM) from six TerraSAR-X stripmap acquisitions by automatic stereo matching. We subtracted a digital terrain model (DTM) from the DSM and obtained a CHM. We assigned the nearest 10 m × 10 m pixel to each field plot. The height of the CHM increased linearly with biomass with 15 t/ha/m. The rmse values were 23 t/ha (18%) at the stand level and 58 t/ha (44%) at the plot level. The tendency of curvilinearity was so weak that it could hardly be distinguished from a straight linear relationship. The straightness of the relationship may enable monitoring of biomass changes without an external DTM as input. A comparison between radargrammetry and interferometric synthetic aperture radar (InSAR) showed that the relationship between the biomass and their respective CHMs was almost identical in terms of parameter estimates. The strength of the relationship was higher with InSAR. By combining ascending and descending pairs followed by editing, the performance of radargrammetry was equally good as with InSAR. Numéro de notice : A2015-028 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2014.2319853 En ligne : https://doi.org/10.1109/TGRS.2014.2319853 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=75109
in IEEE Transactions on geoscience and remote sensing > vol 53 n° 1 (January 2015) . - pp 154 - 161[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 065-2015011 RAB Revue Centre de documentation En réserve L003 Disponible Juniperus phoenicea growing on cliffs: dendrochronology and wiggle-matching applied to the oldest trees in France / C. Mathaux (2015)
![]()
contenu dans TRACE - Tree Rings in Archaeology, Climatology and Ecology, Volume 13 / Rob Wilson (2015)![]()
Titre : Juniperus phoenicea growing on cliffs: dendrochronology and wiggle-matching applied to the oldest trees in France Type de document : Article/Communication Auteurs : C. Mathaux, Auteur ; J. P. Mandin, Auteur ; J.-L. Edouard, Auteur ; et al., Auteur Editeur : Postdam : GeoForschungsZentrum Postdam Année de publication : 2015 Collection : Scientific technical reports Conférence : Dendrosymposium 2014 06/05/2014 10/05/2014 Aviemore Royaume-Uni OA Proceedings Importance : pp 76 - 81 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Végétation
[Termes IGN] dendrochronologie
[Termes IGN] juniperus phoeniceaRésumé : (auteur) [introduction] [...] In the French Mediterranean region, populations of this Juniper tree can also grow on vertical and exposed limestone cliffs. Larson et al. (1999, 2000) assigned to cliffs the property of supporting ancient, primary or virgin woodland. In such habitats, disturbances from humans are absent, due to inaccessibility. Trees also benefit of absence of fires, grazing and competition by more aggressive level-ground vegetation. On these cliffs, in the southeast of France, Juniperus phoenicea is adapted to extreme growing conditions where the main constraints are verticality and compact hard limestone constituting a strong mechanical stress on roots. Indeed it limits their growth and both nutrients and water supply in dry and warm conditions under Mediterranean climate. In addition to that, trees face sporadic rockfall. [...] Numéro de notice : C2015-001 Affiliation des auteurs : non IGN Thématique : FORET Nature : Communication DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=75986 Documents numériques
en open access
Juniperus phoeniceaAdobe Acrobat PDFMODIS-based vegetation index has sufficient sensitivity to indicate stand-level intra-seasonal climatic stress in oak and beech forests / Tomáš Hlásny in Annals of Forest Science, vol 72 n° 1 (January 2015)
PermalinkPermalinkPinastéréo, estimation de la hauteur dominante et de la biomasse forestière dans le massif des Landes de Gascogne à partir d'images stéréoscopiques Pléiades / Thierry Bélouard in Revue Française de Photogrammétrie et de Télédétection, n° 209 (Janvier 2015)
PermalinkRetrieving surface variables by integrating ground measurements and earth observation data in forest canopies : a case study in Speuldersbos forest / Kitsiri Weligepolage (2015)
![]()
PermalinkRetrieving the stand age from a retrospective detection of multinannual forest changes using Landsat data. Application on the heavily managed maritime pine forest in Southwestern France from a 30-year Landsat time-series (1984–2014) / Dominique Guyon (2015)
PermalinkSatellite data as indicators of tree biomass growth and forest dieback in a Mediterranean holm oak forest / Romà Ogaya in Annals of Forest Science, vol 72 n° 1 (January 2015)
PermalinkThe Forests in Germany / Federal ministry of food and agriculture = Bundesministerium für Ernährung und Landwirtschaft (Berlin, Allemagne) (2015)
PermalinkPermalinkVisualisation of spread of Chalara ash dieback for raising public awareness and responsible woodland access / Chen Wang (2015)
PermalinkDeadwood and tree microhabitat dynamics in unharvested temperate mountain mixed forests: A life-cycle approach to biodiversity monitoring / Laurent Larrieu in Forest ecology and management, vol 334 ([15/12/2014])
Permalink