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Canada-wide maps of dominant tree species from remotely sensed and ground data / G. Pavlic in Geocarto international, vol 22 n° 3 (September - November 2007)  

Public [article]  inGeocarto international > vol 22 n° 3 (September - November 2007) . - pp 185 - 204 Titre : Canada-wide maps of dominant tree species from remotely sensed and ground data Type de document : Article/Communication Auteurs : G. Pavlic, Auteur ; W. Chen, Auteur ; R. Fernandes, Auteur ; et al., Auteur Année de publication : 2007 Article en page(s) : pp 185 - 204 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] Canada [Termes IGN] carte de la végétation [Termes IGN] données de terrain [Termes IGN] feuillu [Termes IGN] image SPOT-Végétation [Termes IGN] inventaire forestier étranger (données) [Termes IGN] Pinophyta Résumé : (Auteur) Information on the spatial distribution of dominant tree species is important as input or validation data in large scale ecological studies, such as carbon budget estimation, biodiversity assessment, and vegetation dynamic modelling. We used a 1-km resolution land cover map of Canada produced from 1998 SPOT VGT satellite data as the base map. Fractions of coniferous needleleaf or deciduous broadleaf forests within each 1-km pixel were then estimated by developing relationships with climate using land-cover maps from Landsat images selected as a representative sample. The fraction of coniferous/deciduous forest within each 1-km pixel was further divided into dominant species fractions using species composition information at the sub-ecoregion level, derived from statistics in the Canadian Forest Inventory (CanFI 1991/94 version), from narrative descriptions of ecoregions, and from topographical data. A total of 17 Canada-wide maps of dominant tree species groups at 1 km-resolution were produced. The estimates of this study agree well with CanFI data at the ecoregion level where available, and show good correspondence with published range maps of Canadian tree species. Numéro de notice : A2007-461 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106040701201798 Date de publication en ligne : 16/08/2007 En ligne : https://doi.org/10.1080/10106040701201798 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28824 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
059-07031	RAB	Revue	Centre de documentation	En réserve L003	Disponible

The effectiveness of richness, diversity and dominance textural indices when applied on digital ground photographs using a GIS for landscape visual analysis purposes / A. Tsouchlaraki in Geocarto international, vol 22 n° 3 (September - November 2007)  

Public [article]  inGeocarto international > vol 22 n° 3 (September - November 2007) . - pp 205 - 217 Titre : The effectiveness of richness, diversity and dominance textural indices when applied on digital ground photographs using a GIS for landscape visual analysis purposes Type de document : Article/Communication Auteurs : A. Tsouchlaraki, Auteur Année de publication : 2007 Article en page(s) : pp 205 - 217 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] analyse visuelle [Termes IGN] Grèce [Termes IGN] IDRISI [Termes IGN] image numérisée [Termes IGN] paysage [Termes IGN] photographie terrestre [Termes IGN] texture d'image Résumé : (Auteur) This study aims to investigate the effectiveness of three main textural indices for the automatic evaluation and classification of landscape scenic quality using digital ground photographs. Based on the textural indices that are commonly used in landscape ecology, the richness, diversity and dominance indices were selected to be examined, and the results from the application of these indices to a sample of ground photographs are described in this paper. The application of the textural indices to the sample of photographs takes place in two different ways, using a geographic information system (GIS) that aims to describe the general and partial heterogeneity of the landscape appearing in each photograph. Furthermore, we investigate the effectiveness of the indices selected as to the classification of the landscape's scenic quality, with the results being compared to other results derived from a research programme of the National Technical University of Athens. Comments and suggestions are presented for further investigation. The main conclusion of the investigation is that the texture indices are sensitized in the landscape's scenic quality, a fact that is positive and encourages the pursuit of further research. Copyright Taylor & Francis Numéro de notice : A2007-462 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106040701204370 Date de publication en ligne : 16/08/2007 En ligne : https://doi.org/10.1080/10106040701204370 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28825 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
059-07031	RAB	Revue	Centre de documentation	En réserve L003	Disponible