Descripteur
Termes IGN > foresterie > sylviculture
sylviculture
Commentaire :
Arboriculture, Arboriculture forestière, Arbres -- Techniques culturales, Cultures forestières, Forêts -- Techniques culturales, Forêts et sylviculture, Techniques forestières. Agriculture. >> Industrie forestière, Bois, Forêt -- Exploitation, Forêt, Machine forestière. Voir aussi les vedettes commençant par Forêts ; Foresterie ; Sylviculture. >>Terme(s) spécifique(s) : Écorçage, Martelage (sylviculture), Arbre -- Abattage, Déboisement, Déchet d'abattage, Dendrométrie, Inventaire forestier, Route forestière, Station forestière -- Typologie, Sylviculture tropicale, Essartage, Éclaircie (sylviculture), Cloisonnement (sylviculture), Coupe à blanc, Dégagement (sylviculture). Equiv. LCSH : Forest and forestry. |
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Above ground biomass estimation in an African tropical forest with lidar and hyperspectral data / Gaia Vaglio Laurin in ISPRS Journal of photogrammetry and remote sensing, vol 89 (March 2014)
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Titre : Above ground biomass estimation in an African tropical forest with lidar and hyperspectral data Type de document : Article/Communication Auteurs : Gaia Vaglio Laurin, Auteur ; Qi Chen, Auteur ; Jeremy A. Lindsell, Auteur ; David A. Coomes, Auteur ; et al., Auteur Année de publication : 2014 Article en page(s) : pp 49 - 58 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] Afrique tropicale
[Termes IGN] bilan du carbone
[Termes IGN] biomasse
[Termes IGN] données lidar
[Termes IGN] forêt tropicale
[Termes IGN] image hyperspectrale
[Termes IGN] modélisation de la forêtRésumé : (Auteur) The estimation of above ground biomass in forests is critical for carbon cycle modeling and climate change mitigation programs. Small footprint lidar provides accurate biomass estimates, but its application in tropical forests has been limited, particularly in Africa. Hyperspectral data record canopy spectral information that is potentially related to forest biomass. To assess lidar ability to retrieve biomass in an African forest and the usefulness of including hyperspectral information, we modeled biomass using small footprint lidar metrics as well as airborne hyperspectral bands and derived vegetation indexes. Partial Least Square Regression (PLSR) was adopted to cope with multiple inputs and multicollinearity issues; the Variable of Importance in the Projection was calculated to evaluate importance of individual predictors for biomass. Our findings showed that the integration of hyperspectral bands (R2 = 0.70) improved the model based on lidar alone (R2 = 0.64), this encouraging result call for additional research to clarify the possible role of hyperspectral data in tropical regions. Replacing the hyperspectral bands with vegetation indexes resulted in a smaller improvement (R2 = 0.67). Hyperspectral bands had limited predictive power (R2 = 0.36) when used alone. This analysis proves the efficiency of using PLSR with small-footprint lidar and high resolution hyperspectral data in tropical forests for biomass estimation. Results also suggest that high quality ground truth data is crucial for lidar-based AGB estimates in tropical African forests, especially if airborne lidar is used as an intermediate step of upscaling field-measured AGB to a larger area. Numéro de notice : A2014-124 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2014.01.001 En ligne : https://doi.org/10.1016/j.isprsjprs.2014.01.001 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=33029
in ISPRS Journal of photogrammetry and remote sensing > vol 89 (March 2014) . - pp 49 - 58[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-2014031 RAB Revue Centre de documentation En réserve L003 Disponible Carbon stock changes of forest land in Finland under different levels of wood use and climate change / Risto Sievänen in Annals of Forest Science, vol 71 n° 2 (March 2014)
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Titre : Carbon stock changes of forest land in Finland under different levels of wood use and climate change Type de document : Article/Communication Auteurs : Risto Sievänen, Auteur ; Olli Salminen, Auteur ; Aleski Lehtonen, Auteur ; et al., Auteur Année de publication : 2014 Article en page(s) : pp 255 - 265 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] analyse comparative
[Termes IGN] changement climatique
[Termes IGN] Finlande
[Termes IGN] forêt boréale
[Termes IGN] puits de carbone
[Termes IGN] sylviculture
[Vedettes matières IGN] Végétation et changement climatiqueRésumé : (Auteur) Context: Prediction of the effect of harvests and climate change (CC) on the changes in carbon stock of forests is necessary both for CC mitigation and adaptation purposes. Aims: We assessed the impact of roundwood and fuelwood removals and climate change (CC) on the changes in carbon stock of Finnish forests during 2007–2042. We considered three harvest scenarios: two based on the recent projections of roundwood and fuelwood demand, and the third reflecting the maximum sustainable cutting level. We applied two climate scenarios: the climate was in the state that prevailed around year 2006, or it changed according to the IPCC SRES A1B scenario. Methods: We combined the large-scale forestry model MELA with the soil carbon model Yasso07 for mineral soils. For soils of drained, forested peatlands, we used a method based on emission factors. Results: The stock change of trees accounted for approximately 80 % of the total stock change. Trees and mineral soils acted as carbon sinks and the drained peatland soils as a carbon source. The forest carbon sink increased clearly in both of the demand-based scenarios, reaching the level of 13–20 Tg C/year (without CC). The planned increase in the use of bioenergy reduced the forest sink by 2.6 Tg C/year. CC increased the forest carbon sink in 2042 by 38 %–58 % depending on the scenario. CC decreased the sink of mineral soils in the initial years of the simulations; after 2030, the effect was slightly positive. CC increased the emissions from the drained peatland soils. Conclusions: It is likely that forest land in Finland acts as a carbon sink in the future. The changes in carbon stocks of trees, mineral soils, and peatland soils respond differently to CC and fuelwood and roundwood harvests. Numéro de notice : A2014-052 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1007/s13595-013-0295-7 Date de publication en ligne : 22/05/2013 En ligne : https://doi.org/10.1007/s13595-013-0295-7 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32957
in Annals of Forest Science > vol 71 n° 2 (March 2014) . - pp 255 - 265[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 016-2014021 SL Revue Centre de documentation Revues en salle Disponible Observation à l'aide des images satellitaires Landsat TM multidates des impacts du transfert de la gestion forestière aux communautés de base : cas de la commune de Didy, région d'Alaotra-Mangoro, Madagascar / Solofoaisoa Rakotoniaina in Photo interprétation, European journal of applied remote sensing, vol 50 n° 1 (mars 2014)
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Titre : Observation à l'aide des images satellitaires Landsat TM multidates des impacts du transfert de la gestion forestière aux communautés de base : cas de la commune de Didy, région d'Alaotra-Mangoro, Madagascar Type de document : Article/Communication Auteurs : Solofoaisoa Rakotoniaina, Auteur ; Pascal Rakotomandrindra, Auteur ; et al., Auteur Année de publication : 2014 Article en page(s) : pp 2 - 10 Note générale : Bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] analyse diachronique
[Termes IGN] classification dirigée
[Termes IGN] image Landsat-TM
[Termes IGN] occupation du sol
[Termes IGN] sylvicultureRésumé : (Auteur) L'objectif principal de ce travail est de produire, à l'aide des images satellitaires Landsat TM, des cartes d'occupation du sol à différentes dates afin d'évaluer l'efficacité du programme des transferts de la gestion forestière aux communautés de base locales. Le site considéré est la commune de Didy, dans la région d'Alaotra-Mangoro, à la partie Centre-Nord de Madagascar. Les images multispectrales acquises à différentes dates ont été tout d'abord soumises à des corrections atmosphériques puis classifiées pour chaque date à l'aide de la méthode de classification non paramétrique SVM (Séparateur à Vaste Marge). Les résultats obtenus montrent en général des impacts positifs de l'installation des transferts de gestion (TG) sur le ralentissement des défrichements et le maintien de la couverture forestière. Numéro de notice : A2014-161 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=33066
in Photo interprétation, European journal of applied remote sensing > vol 50 n° 1 (mars 2014) . - pp 2 - 10[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 104-2014011 SL Revue Centre de documentation Revues en salle Exclu du prêt Uneven-aged management options to promote forest resilience for climate change adaptation: effects of group selection and harvesting intensity / Valentine Lafond in Annals of Forest Science, vol 71 n° 2 (March 2014)
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Titre : Uneven-aged management options to promote forest resilience for climate change adaptation: effects of group selection and harvesting intensity Type de document : Article/Communication Auteurs : Valentine Lafond, Auteur ; Guillaume Lagarrigues, Auteur ; et al., Auteur Année de publication : 2014 Article en page(s) : pp 173 - 186 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Végétation
[Termes IGN] changement climatique
[Termes IGN] gestion durable
[Termes IGN] ressources naturelles
[Termes IGN] sylviculture
[Termes IGN] vulnérabilitéRésumé : (Auteur) Context: Climate change is expected to increase forest vulnerability through disturbances such as windstorms and droughts. Forest managers are therefore investigating strategies to increase forest resistance and resilience, especially by promoting uneven-aged and mixed forests through group selection, and by reducing stand stocking and large trees proportion. However, there is little information on the long-term impacts of these two practices. Aims: The objectives of this study were (1) to develop an original silviculture algorithm designed for uneven-aged management and (2) to use it to assess the effects of the above-mentioned management methods in long-term simulations. Methods: We simulated individual and group selection techniques in order to study the effects of group size, harvesting intensity and their interactions on wood production, stand heterogeneity, and regeneration in mountain spruce–fir forests. We used the spatially explicit individual-based forest model Samsara2 to simulate forest dynamics. Results: Our simulation results confirmed the positive effect of group selection practices on structure diversity and regeneration but not on spruce maintenance. Increasing harvesting intensity enabled forest destocking but decreased structure diversity and led to non-sustained yields for the most intensive scenarios. Conclusion: As adaptation measure, we thus recommend moderate group selection harvesting creating 500 m2 gaps. Numéro de notice : A2014-051 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1007/s13595-013-0291-y Date de publication en ligne : 16/05/2013 En ligne : https://doi.org/10.1007/s13595-013-0291-y Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32956
in Annals of Forest Science > vol 71 n° 2 (March 2014) . - pp 173 - 186[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 016-2014021 SL Revue Centre de documentation Revues en salle Disponible Detecting subcanopy invasive plant species in tropical rainforest by integrating optical and microwave (InSAR/PolInSAR) remote sensing data, and a decision tree algorithm / Abduwasit Ghulam in ISPRS Journal of photogrammetry and remote sensing, vol 88 (February 2014)
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Titre : Detecting subcanopy invasive plant species in tropical rainforest by integrating optical and microwave (InSAR/PolInSAR) remote sensing data, and a decision tree algorithm Type de document : Article/Communication Auteurs : Abduwasit Ghulam, Auteur ; Ingrid Porton, Auteur ; Karen Freeman, Auteur Année de publication : 2014 Article en page(s) : pp 174 - 192 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image mixte
[Termes IGN] analyse des mélanges spectraux
[Termes IGN] arbre de décision
[Termes IGN] espèce exotique envahissante
[Termes IGN] extraction de la végétation
[Termes IGN] extraction de traits caractéristiques
[Termes IGN] forêt équatoriale
[Termes IGN] hauteur des arbres
[Termes IGN] image optique
[Termes IGN] image radar
[Termes IGN] intégration de données
[Termes IGN] interféromètrie par radar à antenne synthétique
[Termes IGN] Madagascar
[Termes IGN] polarimétrie radar
[Termes IGN] réserve naturelle
[Termes IGN] sous-boisRésumé : (Auteur) In this paper, we propose a decision tree algorithm to characterize spatial extent and spectral features of invasive plant species (i.e., guava, Madagascar cardamom, and Molucca raspberry) in tropical rainforests by integrating datasets from passive and active remote sensing sensors. The decision tree algorithm is based on a number of input variables including matching score and infeasibility images from Mixture Tuned Matched Filtering (MTMF), land-cover maps, tree height information derived from high resolution stereo imagery, polarimetric feature images, Radar Forest Degradation Index (RFDI), polarimetric and InSAR coherence and phase difference images. Spatial distributions of the study organisms are mapped using pixel-based Winner-Takes-All (WTA) algorithm, object oriented feature extraction, spectral unmixing, and compared with the newly developed decision tree approach. Our results show that the InSAR phase difference and PolInSAR HH–VV coherence images of L-band PALSAR data are the most important variables following the MTMF outputs in mapping subcanopy invasive plant species in tropical rainforest. We also show that the three types of invasive plants alone occupy about 17.6% of the Betampona Nature Reserve (BNR) while mixed forest, shrubland and grassland areas are summed to 11.9% of the reserve. This work presents the first systematic attempt to evaluate forest degradation, habitat quality and invasive plant statistics in the BNR, and provides significant insights as to management strategies for the control of invasive plants and conversation in the reserve. Numéro de notice : A2014-090 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2013.12.007 En ligne : https://doi.org/10.1016/j.isprsjprs.2013.12.007 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32995
in ISPRS Journal of photogrammetry and remote sensing > vol 88 (February 2014) . - pp 174 - 192[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-2014021 RAB Revue Centre de documentation En réserve L003 Disponible Stand structure and plant species occurrence in forest edge habitat along different aged roads on Okinawa Island, southwestern Japan / Tsutomu Enoki in Journal of Forest Research, vol 19 n° 1 (February 2014)
PermalinkPermalinkGreen is the new grey / Mary Jo Wagner in GEO: Geoconnexion international, vol 13 n° 1 (january 2014)
PermalinkLarge scale road network extraction in forested moutainous areas using airborne laser scanning data / António Ferraz (2014)
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PermalinkPermalinkPermalinkForest cutting and impacts on carbon in the eastern United States / Decheng Zhou in Scientific reports, vol 3 (2013)
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PermalinkAssessing the relationship between ground measurements and object-based image analysis of land cover classes in Pinyon and Juniper Woodlands / April Hulet in Photogrammetric Engineering & Remote Sensing, PERS, vol 79 n° 9 (September 2013)
PermalinkGround-based array for tomographic imaging of the tropical forest in P-band / Ho Tong Minh Dinh in IEEE Transactions on geoscience and remote sensing, vol 51 n° 8 (August 2013)
PermalinkPhenomenology of ground scattering in a tropical forest through polarimetric synthetic aperture radar tomography / Mauro Mariotti d'Alessandro in IEEE Transactions on geoscience and remote sensing, vol 51 n° 8 (August 2013)
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