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Auteur Robert Jandl |
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Forest adaptation to climate change—is non-management an option? / Robert Jandl in Annals of Forest Science, vol 76 n° 2 (June 2019)
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Titre : Forest adaptation to climate change—is non-management an option? Type de document : Article/Communication Auteurs : Robert Jandl, Auteur ; Peter Spathelf, Auteur ; Andreas Bolte, Auteur ; Cindy E. Prescott, Auteur Année de publication : 2019 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] changement climatique
[Termes IGN] gestion forestière durable
[Vedettes matières IGN] Végétation et changement climatiqueRésumé : (Auteur) Climate change is posing a considerable challenge to foresters. The intensity of required adaptive measures and the relevance of old-growth forests as benchmark for managed forests are debated. Forest managers need to make decisions on stand treatment that are based on climatological and biological parameters with high uncertainties. We provided the conceptual basis for adaptive forest management and provide a number of case studies that reflect the options and limitations of ways of coping with climate change. The examples are derived from the experience of the authors. We conclude that only few forest types are either not strongly affected by climate change or do not require immediate adaptations of forest management. Many productive forests have stand properties that are decisively shaped by past management decisions, such as tree species composition, age distribution, rotation period, and stand structure. Maintaining these properties under the influence of climate change requires continuous and even increasing efforts of forest managers. Numéro de notice : A2019-182 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s13595-019-0827-x Date de publication en ligne : 30/04/2019 En ligne : https://doi.org/10.1007/s13595-019-0827-x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=92702
in Annals of Forest Science > vol 76 n° 2 (June 2019)[article]Strategies for climate-smart forest management in Austria / Robert Jandl in Forests, vol 9 n° 10 (October 2018)
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Titre : Strategies for climate-smart forest management in Austria Type de document : Article/Communication Auteurs : Robert Jandl, Auteur ; Thomas Ledermann, Auteur ; Georg Kindermann, Auteur ; Alexandra Freudenschuss, Auteur ; Thomas Gschwantner, Auteur ; Peter Weiss, Auteur Année de publication : 2018 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] arbre caducifolié
[Termes IGN] Autriche
[Termes IGN] bioénergie
[Termes IGN] biomasse aérienne
[Termes IGN] changement climatique
[Termes IGN] gestion forestière durable
[Termes IGN] modèle de croissance végétale
[Termes IGN] Pinophyta
[Termes IGN] puits de carbone
[Vedettes matières IGN] Végétation et changement climatiqueRésumé : (Auteur) We simulated Austrian forests under different sustainable management scenarios. A reference scenario was compared to scenarios focusing on the provision of bioenergy, enhancing the delivery of wood products, and reduced harvesting rates. The standing stock of the stem biomass, carbon in stems, and the soil carbon pool were calculated for the period 2010–2100. We used the forest growth model Câldis and the soil carbon model Yasso07. The wood demand of all scenarios could be satisfied within the simulation period. The reference scenario led to a small decrease of the stem biomass. Scenarios aiming at a supply of more timber decreased the standing stock to a greater extent. Emphasizing the production of bioenergy was successful for several decades but ultimately exhausted the available resources for fuel wood. Lower harvesting rates reduced the standing stock of coniferous and increased the standing stock of deciduous forests. The soil carbon pool was marginally changed by different management strategies. We conclude that the production of long-living wood products is the preferred implementation of climate-smart forestry. The accumulation of carbon in the standing biomass is risky in the case of disturbances. The production of bioenergy is suitable as a byproduct of high value forest products. Numéro de notice : A2018-474 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.3390/f9100592 Date de publication en ligne : 22/09/2018 En ligne : https://doi.org/10.3390/f9100592 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=91173
in Forests > vol 9 n° 10 (October 2018)[article]Future management options for cembran pine forests close to the alpine timberline / Nathalia Jandl in Annals of Forest Science, vol 75 n° 3 (September 2018)
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Titre : Future management options for cembran pine forests close to the alpine timberline Type de document : Article/Communication Auteurs : Nathalia Jandl, Auteur ; Robert Jandl, Auteur ; Andreas Schindlbacher, Auteur Année de publication : 2018 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] biomasse forestière
[Termes IGN] changement climatique
[Termes IGN] économie forestière
[Termes IGN] forêt alpestre
[Termes IGN] gestion forestière
[Termes IGN] grume
[Termes IGN] Larix decidua
[Termes IGN] marché du bois
[Termes IGN] Pinus cembra
[Termes IGN] prévention des risques
[Termes IGN] puits de carbone
[Termes IGN] service écosystémique
[Termes IGN] simulation
[Termes IGN] Tyrol (Autriche)
[Vedettes matières IGN] SylvicultureRésumé : (auteur) Key message: High-elevation forests in the Alps protect infrastructure and human lives against natural hazards such as rockfall, flooding, and avalanches. Routinely performed silvicultural interventions maintain the required stand structure but are not commercially viable in remote forests due to high operational costs. Financial subsidies for the management of high-elevation protection forests are an efficient strategy to ensure sustainable forest cover.
Context:Presently, many high-elevation forests in the Alps are managed in order to ensure the provision of ecosystem services with emphasis on the minimization of natural hazards.
Aims: We studied the possible economic performance of a high-elevation protection forest from an owner’s perspective. We investigated whether the increase in productivity due to climate change and a favorable market for the dominating cembran pine (Pinus cembra L.) are sufficient for profitable timber production in protection forests.
Methods: We simulated the standing timber stock and the soil carbon pool for a 100-year period with climate-sensitive models and compared harvesting costs with expected revenues. Our scenarios included different climates, intensities of timber extractions, parameters of the timber market, and the availability of government subsidies.
Results: Overall, the productivity of forests increases by approximately 15% until the end of the century. In a zero-management scenario, the forest accumulates carbon both in the aboveground biomass and the soil. In the case of an extensive management with moderate timber extractions every 50 years, the carbon stocks decline both in biomass and soil. A more intensive management scenario with extractions every 30 years leads to substantial losses of the soil and biomass carbon pools. In addition, the stand structure changes and the protective function of the forest is not sustainably ensured. Timber production can be economically successful only with high selling prices of cembran pine timber and the availability of governmental subsidies for forest management. The admixed European larch (Larix decidua Mill.) contributes only marginally to the economic success. The main challenge are harvesting costs. The costs of timber extraction by a long-distance cableway logging system exceed the value of the harvested timber.
Conclusion: The intensification of forest management cannot be recommended from the perspective of timber production, sustainable forest management, and protection against natural hazards. Our simulation experiment shows that the extraction of timber at decadal intervals depletes the carbon stock that is insufficiently replenished from aboveground and belowground litterfall. Leaving the forest unmanaged does not impose a particular threat to stand stability and is under the encountered situation, a justified strategy.Numéro de notice : A2018-332 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s13595-018-0760-4 Date de publication en ligne : 15/08/2018 En ligne : https://doi.org/10.1007/s13595-018-0760-4 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90483
in Annals of Forest Science > vol 75 n° 3 (September 2018)[article]