Centre dedocumentation
scientifique

Monitoring clearcutting and subsequent rapid recovery in Mediterranean coppice forests with Landsat time series / Gherardo Chirici in Annals of Forest Science [en ligne], Vol 77 n° 2 (June 2020)  

Public [article]  inAnnals of Forest Science [en ligne] > Vol 77 n° 2 (June 2020) Titre : Monitoring clearcutting and subsequent rapid recovery in Mediterranean coppice forests with Landsat time series Type de document : Article/Communication Auteurs : Gherardo Chirici, Auteur ; Francesca Giannetti, Auteur ; Erica Mazza, Auteur ; et al., Auteur Année de publication : 2020 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes descripteurs IGN] brûlis [Termes descripteurs IGN] canopée [Termes descripteurs IGN] coupe rase (sylviculture) [Termes descripteurs IGN] dégradation du signal [Termes descripteurs IGN] forêt méditerranéenne [Termes descripteurs IGN] image Landsat [Termes descripteurs IGN] Normalized Difference Vegetation Index [Termes descripteurs IGN] reconstruction du signal [Termes descripteurs IGN] régénération (sylviculture) [Termes descripteurs IGN] série temporelle [Termes descripteurs IGN] taillis [Termes descripteurs IGN] télémètre laser aéroporté Résumé : (auteur) Key message: This work analyses the rate of recovery of the spectral signal from clearcut areas of coppice Mediterranean forests using Landsat Time Series (LTS). The analysis revealed a more rapid rate of spectral signal recovery than what was found in previous investigations in boreal and temperate forests. Context: The rate of post-disturbance vegetation recovery is an important component of forest dynamics. Aims: In this study, we analyze the recovery of the spectral signal from forest clearcut areas in Mediterranean conditions when the coppice system of forest management is applied. Methods: We used LTS surface reflectance data (1999–2015). We generated an annual reference database of clearcuts using visual interpretation and local forest inventory data, and then derived the Normalized Difference Vegetation Index (NDVI) and Normalized Burn Ratio (NBR) spectral trajectories for these clearcuts. From these spectral trajectories, we calculated the Years to Recovery or Y2R, the number of years it takes for a pixel to return to within a specified threshold (i.e., 70%, 80%, 90%, 100%) of its pre-disturbance value. Spectral recovery rates were then corroborated using measures of canopy height derived from airborne laser scanning (ALS) data. Results: The coppice system is associated with rapid recovery rates when compared to rates of recovery from seeds or seedlings in temperate and boreal forest conditions. We found that the Y2R derived from the spectral trajectories of post-clearcut NBR and NDVI provided similar characterizations of rapid recovery for the coppice system of forest management applied in our study area. The ALS measures of canopy height indicated that the Y2R metric accurately captured the rapid regeneration of coppice systems. Conclusion: The rapid rate of spectral recovery associated with the coppice system is 2–4 years, which contrasts with values reported in boreal and temperate forest environments, where spectral recovery was attained in approximately 10 years. NBR is an effective index for assessing rapid recovery in this forest system. Numéro de notice : A2020-293 Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s13595-020-00936-2 date de publication en ligne : 15/04/2020 En ligne : https://doi.org/10.1007/s13595-020-00936-2 Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=95123 [article]

Comparing nearest neighbor configurations in the prediction of species-specific diameter distributions / Janne Raty in Annals of Forest Science [en ligne], vol 75 n° 1 (March 2018)  

Public [article]  inAnnals of Forest Science [en ligne] > vol 75 n° 1 (March 2018) Titre : Comparing nearest neighbor configurations in the prediction of species-specific diameter distributions Type de document : Article/Communication Auteurs : Janne Raty, Auteur ; Petteri Packalen, Auteur ; Matti Maltamo, Auteur Année de publication : 2018 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes descripteurs IGN] classificateur non paramétrique [Termes descripteurs IGN] diamètre des arbres [Termes descripteurs IGN] Finlande [Termes descripteurs IGN] forêt boréale [Termes descripteurs IGN] image aérienne [Termes descripteurs IGN] télémètre laser aéroporté [Termes descripteurs IGN] volume en bois [Vedettes matières IGN] Sylviculture Résumé : (Auteur) We examine how the configurations in nearest neighbor imputation affect the performance of predicted species-specific diameter distributions. The simultaneous nearest neighbor imputation for all tree species and separate imputation by tree species are evaluated with total volume calibration as a prediction method for diameter distributions. This study considers the predictions of species-specific diameter distributions in Finnish boreal forests by means of airborne laser scanning (ALS) data and aerial images. The aim was to investigate different configurations in non-parametric nearest neighbor (NN) imputation and to determine how changes in configurations affect prediction error rates for timber assortment volumes and the error indices of the diameter distributions. Non-parametric NN imputation was used as a modeling method and was applied in two different ways: (1) diameter distributions were predicted at the same time for all tree species by simultaneous NN imputation, and (2) diameter distributions were predicted for one tree species at a time by separate NN imputation. Calibration to a regression-based total volume prediction was applied in both cases. The results indicated that significant changes in the volume prediction error rates for timber assortment and for error indices can be achieved by the selection of responses, calibration to total volume, and separate NN imputation by tree species. verall, the selection of response variables in NN imputation and calibration to total volume improved the predicted diameter distribution error rates. The most successful prediction performance of diameter distribution was achieved by separate NN imputation by tree species. Numéro de notice : A2018-314 Thématique : FORET Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s13595-018-0711-0 date de publication en ligne : 06/03/2018 En ligne : https://doi.org/10.1007/s13595-018-0711-0 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90438 [article]

Meet Dr Johannes Riegl / P. Ftizgibbon in GEO: Geoconnexion international, vol 12 n° 2 (february 2013)

Public [article]  inGEO: Geoconnexion international > vol 12 n° 2 (february 2013) . - pp 20 - 21 Titre : Meet Dr Johannes Riegl Type de document : Article/Communication Auteurs : P. Ftizgibbon, Auteur Année de publication : 2013 Article en page(s) : pp 20 - 21 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie [Termes descripteurs IGN] données lidar [Termes descripteurs IGN] données localisées 3D [Termes descripteurs IGN] instrumentation Riegl [Termes descripteurs IGN] télémètre laser aéroporté [Termes descripteurs IGN] télémètre laser terrestre Résumé : (Auteur) At the Intergeo 2012 conference and trade fair in Hannover, Germany, Geoconnexion's Peter Fitzgibbon interviewed Dr Johannes Riegl, the founder and chief executive officer of Riegl laser measurements systems GMBH. Numéro de notice : A2013-085 Thématique : IMAGERIE Nature : Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32223 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
062-2013021	SL	Revue	Centre de documentation	Revues en salle	Disponible

Airborne lidar for natural environments: research and applications in France / C. Puech in Revue Française de Photogrammétrie et de Télédétection, n° 200 (Novembre 2012)

Public [article]  inRevue Française de Photogrammétrie et de Télédétection > n° 200 (Novembre 2012) . - pp 54 - 68 Titre : Airborne lidar for natural environments: research and applications in France Type de document : Article/Communication Auteurs : C. Puech, Auteur ; Sylvie Durrieu, Auteur ; Jean-Stéphane Bailly, Auteur Année de publication : 2012 Article en page(s) : pp 54 - 68 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie [Termes descripteurs IGN] données lidar [Termes descripteurs IGN] données localisées 3D [Termes descripteurs IGN] géomorphologie [Termes descripteurs IGN] Lidar [Termes descripteurs IGN] lidar à retour d'onde complète [Termes descripteurs IGN] modèle numérique de surface [Termes descripteurs IGN] télémètre laser aéroporté [Termes descripteurs IGN] traitement du signal [Termes descripteurs IGN] végétation Résumé : (Auteur) This paper is a review of various research works in France on airborne LiDAR applied to the monitoring of natural environment. Firstly, it presents applications based on the use of very high-resolution digital surface models derived from LiDAR data. The use of such models is quickly expanding on all the fields related to the environment. This article also discusses more specific research on signal processing and accuracy. Part of this work summarizes papers that were published in the "Revue Française de Photogrammétrie et de Télédétection (RFPT)", the French Journal of Photogrammetry and Remote Sensing, following two national conferences organized in Montpellier (2006) and Le Mans (2009) in order to invite researchers using LiDAR in several fields of application to initiate technical and scientific exchanges. We also provide an update on ongoing research and instrument developments in France. Numéro de notice : A2012-568 Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32014 [article]

Réservation

Réserver ce document

Exemplaires (2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
018-2012051	RAB	Revue	Centre de documentation	En réserve 3L	Disponible
018-2012052	RAB	Revue	Centre de documentation	En réserve 3L	Disponible

Airborne topographic laser scanners / Gordon Petrie in Geoinformatics, vol 14 n° 1 (01/01/2011)

Public [article]  inGeoinformatics > vol 14 n° 1 (01/01/2011) . - pp 34 - 44 Titre : Airborne topographic laser scanners Type de document : Article/Communication Auteurs : Gordon Petrie, Auteur Année de publication : 2011 Article en page(s) : pp 34 - 44 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s) [Termes descripteurs IGN] balayage laser [Termes descripteurs IGN] télémètre laser aéroporté Résumé : (Auteur) The recent Intergeo 2010 conference and trade fair and ELMF 2010 forum and exhibition have both served to highlight the many new developments that have been tacking place in airborne topographic laser scanners. Indeed, as result of all of this activity and innovation, airborne laser scanning is a booming sector of the mapping industry and flourishing area for the system suppliers. This article discusses the main advances that occur in the technology and presents an overview and survey of those systems that are operational and are currently available on the market. Numéro de notice : A2011-022 Thématique : IMAGERIE Nature : Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30804 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
262-2011011	SL	Revue	Centre de documentation	Revues en salle	Disponible

A low-cost multi-sensoral mobile mapping system and its feasibility for tree measurements / Anttoni Jaakkola in ISPRS Journal of photogrammetry and remote sensing, vol 65 n° 6 (November - December 2010)

Permalink

Advanced full-waveform lidar data echo detection: assessing quality of derived terrain and tree height models in an alpine coniferous forest / Adrien Chauve in International Journal of Remote Sensing IJRS, vol 30 n° 19 (October 2009)    

Permalink

Contrôle de l'intégrité GPS en temps réel et géoréférencement direct par RTK-GPS pour le levé laser aéroporté / Yannick Stebler in Géomatique suisse, vol 107 n° 3 (01/03/2009)

Permalink

Taking LIDAR data to the next level / A. Denniss in GEO: Geoconnexion international, vol 8 n° 1 (january 2009)

Permalink

Data fusion of high-resolution satellite imagery and Lidar data for automatic building extraction / Gunho Sohn in ISPRS Journal of photogrammetry and remote sensing, vol 62 n° 1 (May 2007)

Permalink

Laser-scanning and heritage / H. Ruther in GIM international, vol 21 n° 5 (May 2007)

Permalink

L'homme de la juste gestion de la mesure / M. Mayo in Géomètre, n° 2034 (février 2007)

Permalink

Airborne laser scanning: new systems and services shown at Intergeo 2006 / Gordon Petrie in Geoinformatics, vol 9 n° 8 (01/12/2006)

Permalink

Examining the influence of changing laser pulse repetition frequencies on conifer forest canopy returns / Laura Chasmer in Photogrammetric Engineering & Remote Sensing, PERS, vol 72 n° 12 (December 2006)

Permalink

Geometric validation of imagery and products from a high performance airborne digital sensor / J.P. Mills in Revue Française de Photogrammétrie et de Télédétection, n° 183 (Septembre 2006)

Permalink