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SlopeManagement via satellite navigation / Daniel Maurice in Geoinformatics, vol 18 n° 8 (December 2015)
[article]
Titre : SlopeManagement via satellite navigation Type de document : Article/Communication Auteurs : Daniel Maurice, Auteur Année de publication : 2015 Article en page(s) : pp 16 - 17 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes IGN] Autriche
[Termes IGN] épaisseur
[Termes IGN] manteau neigeux
[Termes IGN] neige
[Termes IGN] penteNuméro de notice : A2015-805 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78833
in Geoinformatics > vol 18 n° 8 (December 2015) . - pp 16 - 17[article]Developing predictive models of wind damage in Austrian forests / Ferenc Pasztor in Annals of Forest Science, vol 72 n° 3 (May 2015)
[article]
Titre : Developing predictive models of wind damage in Austrian forests Type de document : Article/Communication Auteurs : Ferenc Pasztor, Auteur ; Christoph Matulla, Auteur ; Maja Zuvela-Aloise, Auteur ; et al., Auteur Année de publication : 2015 Article en page(s) : pp 289 - 301 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Végétation
[Termes IGN] Autriche
[Termes IGN] discrétisation
[Termes IGN] dommage matériel
[Termes IGN] forêt
[Termes IGN] modèle linéaire
[Termes IGN] Picea abies
[Termes IGN] station forestière
[Termes IGN] tempête
[Termes IGN] ventRésumé : (auteur) Context : Among natural disturbances, wind storms cause the greatest damage to forests in Austria.
Aim : The aim of this study is to quantify the effects of site, stand and meteorological attributes on the wind disturbance regime at the operational scale of forest stands.
Methods : We used binomial generalized linear mixed models (GLMMs) to quantify the probability of damage events and linear mixed models (LMMs) to explain the damage intensity at the forest stand level in four management units with a total forest area of approximately 28,800 ha.
Results : Timber stock volume, stand age, elevation, previous disturbances, wind gust speed and frozen state of soil contributed in explaining probability of wind damage. While the model of disturbance probability correctly classified 90 % of all cases in the data set (specificity 95 %, sensitivity 26 %), the model for damage intensity explained only low percentages of the variation in the observed damage data (full model R 2 = 0.38, fixed effects-only model R 2 = 0.09; cross-validation in the four forest management units yielded similar R 2 values).
Conclusion : The developed models indicated that decreasing the proportion of Norway spruce (Picea abies [L.] Karst), limiting stand age and reducing the timber stock in course of tending treatments in stands exposed to wind disturbance can mitigate the risk and the expected damage intensity. High gust speeds and salvage cuts after earlier damage increase the probability of further wind disturbance events.Numéro de notice : A2015-452 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1007/s13595-014-0386-0 Date de publication en ligne : 11/06/2014 En ligne : https://doi.org/10.1007/s13595-014-0386-0 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=77108
in Annals of Forest Science > vol 72 n° 3 (May 2015) . - pp 289 - 301[article]Do competition-density rule and self-thinning rule agree? / Sonja Vospernik in Annals of Forest Science, vol 72 n° 3 (May 2015)
[article]
Titre : Do competition-density rule and self-thinning rule agree? Type de document : Article/Communication Auteurs : Sonja Vospernik, Auteur ; Hubert Sterba, Auteur Année de publication : 2015 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] Abies (genre)
[Termes IGN] auto-éclaircie
[Termes IGN] Autriche
[Termes IGN] croissance des arbres
[Termes IGN] densité de la végétation
[Termes IGN] inventaire forestier étranger (données)
[Termes IGN] Larix decidua
[Termes IGN] Normalized Difference Vegetation Index
[Termes IGN] Picea abies
[Termes IGN] Pinus nigra
[Termes IGN] Pinus pinea
[Termes IGN] Pinus sylvestris
[Vedettes matières IGN] ForesterieRésumé : (auteur) Context : The competition-density principle, which can mathematically be described by the competition-density rule, is an important principle in plant ecology. The border line relationship is the self-thinning rule. Despite the importance of both rules for forest management, they have been fit for few species.
Aims : The aim of this study is to compare competition-density rule and self-thinning rule in particular with respect to potential density for 15 species from the Austrian National Forest Inventory (ANFI).
Methods : The self-thinning line was estimated using quantile regression. The competition-density rule was fit as four- and as three-parameter model, where the fourth parameter was substituted (a) with a specific slope from the self-thinning line estimated from the ANFI and (b) Reineke’s slope (−1.605).
Results : Potential density was highest for Austrian pine and Norway spruce, followed by silver fir and Scots pine; it was considerably lower for European larch, stone pine and broadleaf species. Species-specific slopes of the self-thinning line ranged between −1.5 and −2.0 and were significantly different from Reineke’s slope for Norway spruce, European larch and European beech.
Conclusions : Using robust estimation techniques, both competition-density rule and self-thinning line can also be fit for minor species, providing an important guide for practical forest management.Numéro de notice : A2015-456 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1007/s13595-014-0433-x Date de publication en ligne : 30/10/2014 En ligne : https://doi.org/10.1007/s13595-014-0433-x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=77120
in Annals of Forest Science > vol 72 n° 3 (May 2015)[article]Mapping the value of ecosystem services: A case study from the Austrian Alps / Alessandro Paletto in Annals of forest research, vol 58 n° 1 (January 2015)
[article]
Titre : Mapping the value of ecosystem services: A case study from the Austrian Alps Type de document : Article/Communication Auteurs : Alessandro Paletto, Auteur ; Clemens Geitner, Auteur ; Gianluca Grilli, Auteur ; Richard Hastik, Auteur ; et al., Auteur Année de publication : 2015 Article en page(s) : pp 157 - 175 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Economie
[Termes IGN] aide à la décision
[Termes IGN] alpes orientales
[Termes IGN] Autriche
[Termes IGN] carte thématique
[Termes IGN] distribution spatiale
[Termes IGN] forêt alpestre
[Termes IGN] hétérogénéité spatiale
[Termes IGN] indicateur de service écosystémique
[Termes IGN] ressources naturelles
[Termes IGN] service écosystémique
[Termes IGN] valeur économiqueRésumé : (auteur) Ecosystem services (ES) are considered the conditions and processes through which natural ecosystems sustain and fulfil human life. In the decision making process related to the natural resources management, two key-aspects must be taken into account: the economic value of the benefits provided by ES (provisioning, regulating and cultural services) and the spatial distribution of these benefits. The purpose of the paper is to develop a method aimed to capture the economic value of the benefits provided by ES, in order to support the decision makers in the natural resources management. ES are not homogeneous across landscapes nor in space. Consequently, gaining knowledge on the spatial distribution of the economic relevance of ES is a fundamental information to target management actions. This method was tested in a case study in the Austrian Alps (Leiblachtal area in Vorarlberg region), characterized by a high importance of forests and grasslands. The results show that the highest economic values could be achieved for the provisioning services with a range between 200 €/ha year and 1,400€/ha year. The regulating services have also important economic values, but strongly localized in specific areas (i.e. protective forests against natural hazards). The economic values of the cultural services are influenced by the preferences of tourists and varies between 5 €/ha year to 60 €/ha year. The method allowed us to reveal the spatial heterogeneity of provisioning, regulating and cultural ES, depending on the ecological characteristics of the site. Numéro de notice : A2015-716 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.15287/afr.2015.335 En ligne : http://dx.doi.org/10.15287/afr.2015.335 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78360
in Annals of forest research > vol 58 n° 1 (January 2015) . - pp 157 - 175[article]The Austrian land cadastre: from the earliest beginnings to the modern land information system / Anka Lisec in Geodetski vestnik, vol 58 n° 3 ([01/09/2014])
[article]
Titre : The Austrian land cadastre: from the earliest beginnings to the modern land information system Type de document : Article/Communication Auteurs : Anka Lisec, Auteur ; Gerhard Navratil, Auteur Année de publication : 2014 Article en page(s) : pp 482 - 499 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cadastre étranger
[Termes IGN] Autriche
[Termes IGN] base de données foncières
[Termes IGN] cadastre étranger
[Termes IGN] cadastre germanique
[Termes IGN] cartographie cadastrale
[Termes IGN] limite cadastrale
[Termes IGN] système d'information foncièreRésumé : (auteur) The objective of this discussion is the Austrian land cadastre, which forms the basis of the Austrian land information system, together with the land registry. From a data structure perspective, the Austrian land cadastre is a traditional parcel-oriented system and includes a geometric description of land plots linked to other records describing the nature of the land plots. The changeable institutional (legal) framework was shaped the continuous development of the Austrian land cadastre since the first systematic land survey and cadastral mapping at the beginning of the 19thcentury. With the progress of information technology in recent decades, it has been developed into a contemporary land information system, which (together with the land registry) provides up-to-date land information. It has to be emphasized that the current land cadastre still contains some data from its very beginning and, for this reason, the historical development of this evidence, including data sources, is of great importance for users of these data. The first part of the article provides an introduction to the historical development of the Austrian land cadastre, followed by the presentation of contents and procedures of the current land cadaster. Numéro de notice : A2014-561 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.15292/geodetski-vestnik.2014.03.482-516 En ligne : http://dx.doi.org/10.15292/geodetski-vestnik.2014.03.482-516 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=74699
in Geodetski vestnik > vol 58 n° 3 [01/09/2014] . - pp 482 - 499[article]Réservation
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