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Auteur Fabian Härtl |
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Climate change and mixed forests: how do altered survival probabilities impact economically desirable species proportions of Norway spruce and European beech? / Carola Paul in Annals of Forest Science, vol 76 n° 1 (March 2019)
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Titre : Climate change and mixed forests: how do altered survival probabilities impact economically desirable species proportions of Norway spruce and European beech? Type de document : Article/Communication Auteurs : Carola Paul, Auteur ; Susanne Brandl, Auteur ; Stefan Friedrich, Auteur ; Wolfgang Falk, Auteur ; Fabian Härtl, Auteur ; Thomas Knoke, Auteur Année de publication : 2019 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] Allemagne
[Termes IGN] aménagement forestier
[Termes IGN] analyse de survie
[Termes IGN] biodiversité végétale
[Termes IGN] changement climatique
[Termes IGN] Fagus sylvatica
[Termes IGN] gestion forestière durable
[Termes IGN] peuplement mélangé
[Termes IGN] Picea abies
[Termes IGN] reboisement
[Termes IGN] régénération (sylviculture)
[Termes IGN] restauration écologique
[Vedettes matières IGN] Economie forestièreRésumé : (auteur) Context : Climate change is expected to increase natural hazards in European forests. Uncertainty in expected tree mortality and resulting potential economic consequences complicate regeneration decisions.
Aims : This study aims to analyze the economic consequences of altered survival probabilities for mixing Norway spruce (Picea abies L. Karst.) and European beech (Fagus sylvatica L.) under different climate change scenarios. We investigate whether management strategies such as species selection and type of mixture (mixed stands vs. block mixture) could mitigate adverse financial effects of climate change.
Methods : The bio-economic modelling approach combines a parametric survival model with modern portfolio theory. We estimate the economically optimal species mix under climate change, accounting for the biophysical and economic effects of tree mixtures. The approach is demonstrated using an example from Southeast Germany.
Results : The optimal tree species mixtures under simulated climate change effects could buffer but not completely mitigate undesirable economic consequences. Even under optimally mixed forest stands, the risk-adjusted economic value decreased by 28%. Mixed stands economically outperform block mixtures for all climate scenarios.
Conclusion : Our results underline the importance of mixed stands to mitigate the economic consequences of climate change. Mechanistic bio-economic models help to understand consequences of uncertain input variables and to design purposeful adaptation strategies.Numéro de notice : A2019-041 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s13595-018-0793-8 Date de publication en ligne : 08/02/2019 En ligne : https://doi.org/10.1007/s13595-018-0793-8 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=92039
in Annals of Forest Science > vol 76 n° 1 (March 2019)[article]Terrestrial laser scanning : applications in cultural heritage conservation and civil engineering / T. Abmayr (01/08/2005)
Titre : Terrestrial laser scanning : applications in cultural heritage conservation and civil engineering Type de document : Article/Communication Auteurs : T. Abmayr, Auteur ; Fabian Härtl, Auteur ; M. Reinköster, Auteur ; C. Fröhlich, Auteur Editeur : International Society for Photogrammetry and Remote Sensing ISPRS Année de publication : 01/08/2005 Collection : International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences, ISSN 1682-1750 num. 36-5/W17 Conférence : 3D-ARCH 2005, ISPRS WG V-4 Workshop, Virtual reconstruction and visualisation of complex architecture 22/08/2005 24/08/2005 Venise Italie OA Proceedings Importance : 6 p. Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] génie civil
[Termes IGN] patrimoine culturel
[Termes IGN] télémètre laser terrestre
[Termes IGN] télémétrie laser terrestreRésumé : (Auteur) Laser scanners are used more and more as instruments for various tasks in cultural heritage conservation. Especially old buildings and archaeological sites are relevant to offer a variety of applications e.g. the surveying of static or simply the visualization and precise modelling for data archiving purposes. The developed IMAGER 5003 is a state-of-the-art, high precision, high speed laser scanner, which provides accurate measurements. The IMAGER 5003 measures range and intensity images at the same time, with a one to one correspondence between these both images with respect to the angles: The range image generates geometric dimensions of the environmental scenes, whereas the reflectance image generates a photographic like impression of the scanned environment which is used for feature extraction, visual inspection, object segmentation, and surface classification. For visualisation tasks the scan data can be combined with colour information: For this purpose either a special high resolution line scan camera developed by the German Aerospace or a standard digital array camera can be used. This paper introduces from a practical point of view into visualization and modelling techniques by using the laser scanner IMAGER 5003. The paper describes features and methods of the system, and shows up two applications in the field of cultural heritage conservation and civil engineering. Numéro de notice : C2005-012 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Communication DOI : sans En ligne : http://www.isprs.org/proceedings/XXXVI/5-W17/pdf/19.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=64232 Documents numériques
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