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Auteur Bernard Riera |
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Affiner la recherche Interroger des sources externesThe spatiotemporal dynamics of forest–heathland communities over 60 years in Fontainebleau, France / Samira Mobaied in ISPRS International journal of geo-information, vol 4 n°4 (December 2015)
Titre : The spatiotemporal dynamics of forest–heathland communities over 60 years in Fontainebleau, France Type de document : Article/Communication Auteurs : Samira Mobaied, Auteur ; Nathalie Machon, Auteur ; Arnault Lalanne, Auteur ; Bernard Riera, Auteur Année de publication : 2015 Article en page(s) : pp 957 - 973 Langues : Anglais (eng) Descripteur : [Termes IGN] aire protégée
[Termes IGN] analyse spatio-temporelle
[Termes IGN] changement d'occupation du sol
[Termes IGN] état de conservation
[Termes IGN] Fontainebleau, forêt de
[Termes IGN] lande
[Termes IGN] sol
[Vedettes matières IGN] Ecologie forestièreRésumé : (auteur) According to the EU Habitats Directive, heathlands are “natural habitats of community interest”. Heathland management aims at conserving these habitats threatened by various changes, including successional processes leading to forest vegetation. We investigate the dynamics of woody species to the detriment of heathland over a period of 60 years in the Fontainebleau forest and we examine the effects of soil types, soil depth and topography parameters on heathland stability. We assess changes in forest cover between 1946 and 2003 by comparing vegetation maps derived from aerial photographs coupled to GIS analyses. The results show the loss of more than 75% of heathland during 1946–2003 due to tree colonisation of abandoned heathland. We detected differences in the dynamics of colonisation between coniferous and deciduous trees. The colonisation of heathland by coniferous species was faster over the last 20 years of our study period. Tree encroachment was faster in north-facing areas and in areas of acidic luvisols. While this dynamic was very slow in acid sandstone soils, heathland stability was more important in shallow soils on flat and south facing areas. Our study has the potential to assist land managers in selecting those heathland areas that will be easier to conserve and/or to restore by focusing on areas and spatial conditions that prevent forest colonisation and hence favour the long-term stability of heathland. Numéro de notice : A2015--004 Affiliation des auteurs : non IGN Thématique : BIODIVERSITE/FORET Nature : Article nature-HAL : ArtAvecCL-RevueIntern En ligne : http://dx.doi.org/10.3390/ijgi4020957 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=80447
in ISPRS International journal of geo-information > vol 4 n°4 (December 2015) . - pp 957 - 973[article]Documents numériques
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The spatiotemporal dynamics of forest–heathlandAdobe Acrobat PDF
Titre : The spatiotemporal dynamics of forest–heathland communities over 60 years in Fontainebleau, France Type de document : Article/Communication Auteurs : Samira Mobaied, Auteur ; Nathalie Machon, Auteur ; Arnault Lalanne, Auteur ; Bernard Riera, Auteur Année de publication : 2015 Article en page(s) : pp 957 - 973 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] aire protégée
[Termes IGN] analyse spatio-temporelle
[Termes IGN] carte de la végétation
[Termes IGN] couvert végétal
[Termes IGN] Fontainebleau, forêt de
[Termes IGN] forêt tempérée
[Termes IGN] habitat forestier
[Termes IGN] lande
[Termes IGN] photographie aérienne
[Termes IGN] protection de la biodiversité
[Termes IGN] sol
[Termes IGN] vingtième siècleRésumé : (auteur) According to the EU Habitats Directive, heathlands are “natural habitats of community interest”. Heathland management aims at conserving these habitats threatened by various changes, including successional processes leading to forest vegetation. We investigate the dynamics of woody species to the detriment of heathland over a period of 60 years in the Fontainebleau forest and we examine the effects of soil types, soil depth and topography parameters on heathland stability. We assess changes in forest cover between 1946 and 2003 by comparing vegetation maps derived from aerial photographs coupled to GIS analyses. The results show the loss of more than 75% of heathland during 1946–2003 due to tree colonisation of abandoned heathland. We detected differences in the dynamics of colonisation between coniferous and deciduous trees. The colonisation of heathland by coniferous species was faster over the last 20 years of our study period. Tree encroachment was faster in north-facing areas and in areas of acidic luvisols. While this dynamic was very slow in acid sandstone soils, heathland stability was more important in shallow soils on flat and south facing areas. Our study has the potential to assist land managers in selecting those heathland areas that will be easier to conserve and/or to restore by focusing on areas and spatial conditions that prevent forest colonisation and hence favour the long-term stability of heathland. Numéro de notice : A2015-709 Affiliation des auteurs : non IGN Thématique : FORET/GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern En ligne : http://www.mdpi.com/2220-9964/4/2/957 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78346
in ISPRS International journal of geo-information > vol 4 n°2 (June 2015) . - pp 957 - 973[article]
Titre : Apport de la télédétection radar polarimétrique pour la discrimination et la distribution spatiale des groupements végétaux Type de document : Article/Communication Auteurs : F. Palla, Auteur ; Cédric Lardeux, Auteur ; K. Jeffery, Auteur ; Pierre-Louis Frison Editeur : Saint-Mandé : Institut national de l'information géographique et forestière - IGN Année de publication : 2015 Conférence : WFC 2015, 14th World Forestry Congress 07/09/2015 11/09/2015 Durban Afrique du sud Open access proceedings Langues : Français (fre) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications Numéro de notice : C2015-061 Affiliation des auteurs : UPEM-LaSTIG+Ext (2016-2019) Thématique : FORET Nature : Communication nature-HAL : ComSansActesPubliés-Unpublished DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=91893
Titre : Remote sensing training in scientific master in France and Africa: Educational choices according to students' academic initial training and first distance learning feedback in Cameroon Type de document : Article/Communication Auteurs : Jean-Paul Rudant Editeur : New York : Institute of Electrical and Electronics Engineers IEEE Année de publication : 2012 Conférence : IGARSS 2012, International Geoscience And Remote Sensing Symposium 22/07/2012 27/07/2012 Munich Allemagne Proceedings IEEE Importance : pp 7365 - 7368 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Télédétection
[Termes IGN] formation
[Termes IGN] mastèreRésumé : (auteur) In this paper, various aspects of remote sensing teaching are presented in 5 master's degree, second year, in which remote sensing training is important, those are master IG Paris-Est France IASIG (Douala Cameroun), DEA IOGA (Tananarive, Madagascar), ERAIFT (Kinsahsa RDCongo), BVT (Museum Paris). In the five cases, remote sensing is just a part of courses which are completed by the master's specialities. Numéro de notice : C2012-010 Affiliation des auteurs : ENSG+Ext (2012-2019) Thématique : IMAGERIE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1109/IGARSS.2012.6351928 En ligne : https://doi.org/10.1109/IGARSS.2012.6351928 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90644
