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Ensure forest-data integrity for climate change studies / Risto Päivinen in Nature climat change, vol 13 n° inconnu ([01/05/2023])
[article]
Titre : Ensure forest-data integrity for climate change studies Type de document : Article/Communication Auteurs : Risto Päivinen, Auteur ; Rasmus Astrup, Auteur ; Richard A. Birdsey, Auteur ; Johannes Breidenbach, Auteur ; Jonas Fridman, Auteur ; Annika S. Kangas, Auteur ; Pekka E. Kauppi, Auteur ; Mickael Kohl, Auteur ; Kari T. Korhonen, Auteur ; Vivian Kvist Johannsen, Auteur ; François Morneau , Auteur ; Thomas Riedel, Auteur ; Klemens Schadauer, Auteur ; Iddo K. Wernick, Auteur Année de publication : 2023 Article en page(s) : pp 495 - 496 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] changement climatique
[Termes IGN] intégrité des données
[Vedettes matières IGN] Inventaire forestierRésumé : (auteur) Forest inventory observations are critical for monitoring the contribution of terrestrial ecosystems to the global carbon cycle and a changing climate1. Like all scientific data, ensuring open access to forest data generally serves to secure the integrity of the data and facilitate climt mitigation efforts. ... Numéro de notice : A2023-175 Affiliation des auteurs : IGN+Ext (2020- ) Thématique : BIODIVERSITE/FORET Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1038/s41558-023-01683-8 Date de publication en ligne : 22/05/2023 En ligne : https://doi.org/10.1038/s41558-023-01683-8 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=103294
in Nature climat change > vol 13 n° inconnu [01/05/2023] . - pp 495 - 496[article]Assesment of manual and automated methods for updating stand-level forest inventories based on aerial photography / Perttu Antilla (2005)
Titre : Assesment of manual and automated methods for updating stand-level forest inventories based on aerial photography Type de document : Thèse/HDR Auteurs : Perttu Antilla, Auteur ; Risto Päivinen, Directeur de thèse ; Matti Maltamo, Directeur de thèse Editeur : Vantaa [Finlande] : Finnish Society of Forest Science Année de publication : 2005 Collection : Dissertationes forestales, ISSN 1795-7389 num. 9 Importance : 42 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-951-651-108-8 Note générale : bibliographie
Academic Dissertation, Faculty of Forestry, University of Joensuu, FinlandLangues : Anglais (eng) Descripteur : [Termes IGN] actualité des données
[Termes IGN] appariement d'images
[Termes IGN] détection d'arbres
[Termes IGN] détection de changement
[Termes IGN] Finlande
[Termes IGN] forêt boréale
[Termes IGN] identification automatique
[Termes IGN] inventaire forestier (techniques et méthodes)
[Termes IGN] inventaire forestier étranger (données)
[Termes IGN] peuplement forestier
[Termes IGN] photo-identification
[Termes IGN] photogrammétrie aérienne
[Vedettes matières IGN] Inventaire forestierRésumé : (auteur) Data collection for forest planning in private forestry in Finland is based on periodic, labour-intensive, stand level field inventories. Therefore, to increase guidance for forest owners more cost-efficient methods that replace or supplement field inventories are needed so as to reallocate labour resources. In addition, for active forest owners, up-to-date information is of interest. The aim of this thesis was to test the applicability of different inventory and updating methods that are based on aerial photography for the regional forest inventory of private forests in Finland. Four approaches were chosen: I) stand level visual interpretation of changes and simulation of stand development, 2) automatic, stand level interpretation of aerial photographs utilising nonparametric estimation, 3) automatic, photogrammetric estimation of mean height, and 4) automatic, monoscopic identification of individual trees. Approaches I and 2 are inventory or updating methods, while approaches 3 and 4 can be considered as components of such methods. Approach 1 was found to be appropriate for operative use for estates that have not ordered a forest plan, provided that the strict prerequisites for the inventory area are met. The- accuracy of approach 2, as such, was not considered to be high enough for forest planning, but this very inexpensive method could turn out to be applicable, if its accuracy could be improved. Approach 3 was based on image matching and would be most useful as a part of other methods, like template matching in multiple images. Although only identification of trees was tested in approach 4, the applicability of whole single tree based inventory method was appraised. Relatively high costs and low accuracy limit the possibilities to use this method, in practice. Note de contenu : Introduction
1 - Material
2 - Methods
3 - Results
4 - DiscussionNuméro de notice : 21692 Affiliation des auteurs : non IGN Thématique : FORET Nature : Thèse étrangère Note de thèse : Academic Dissertation : Forestry : University of Joensuu : 2005 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90928