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Multi-century reconstruction suggests complex interactions of climate and human controls of forest fire activity in a Karelian boreal landscape, North-West Russia / N. Ryzhkova in Forest ecology and management, vol 459 (1 March 2020)  

Public [article]  inForest ecology and management > vol 459 (1 March 2020) . - n° 117770 Titre : Multi-century reconstruction suggests complex interactions of climate and human controls of forest fire activity in a Karelian boreal landscape, North-West Russia Type de document : Article/Communication Auteurs : N. Ryzhkova, Auteur ; G. Pinto, Auteur ; A. Kryshen, Auteur ; Yves Bergeron, Auteur ; Clémentine Ols , Auteur ; Igor Drobyshev, Auteur Année de publication : 2020 Projets : PREREAL / Ali, Ahmed Adam Article en page(s) : n° 117770 Note générale : bibliographie The study was done within the framework of the PREREAL project, funded by EU JPI Climate program and Belmont Forum, PREFORM project funded by NEFCO, CLIMECO and Baltic Fires projects, both funded by the Swedish Institute (grants to I.D.). Fellowship to N.R. was funded by NSERC grant (RGPIN-2018-06637 to I.D.). Langues : Anglais (eng) Descripteur : [Termes IGN] analyse diachronique [Termes IGN] dendrochronologie [Termes IGN] dix-huitième siècle [Termes IGN] dix-neuvième siècle [Termes IGN] dix-septième siècle [Termes IGN] forêt boréale [Termes IGN] incendie de forêt [Termes IGN] Pinus sylvestris [Vedettes matières IGN] Dendrométrie Résumé : (auteur) Spatially explicit reconstructions of fire activity in European boreal forest are rare, which limits our understanding of factors driving vegetation dynamics in this part of the boreal domain. We have developed a spatially explicit dendrochronological reconstruction of a fire regime in a 25 × 50 km2 area within boreal biome located within the Kalevalsky National Park (Kalevalsky NP), over the 1400–2010 CE period. We dated 184 fire years using 212 fire-scarred living and dead Scots pine (Pinus sylvestris L.) trees collected on 38 sites. The studied period revealed a pronounced century-long variability in forest fire cycles (FC). The early period (1400–1620 CE) had low fire activity (FC = 178 years), which increased during the 1630–1920 period (FC = 46 years) and then decreased over the 1930–2000 period (FC = 283 years). Dendrochronological results did not provide a conclusive answer on the origins of FC dynamics, although several lines of evidence suggest that climate drove the increase in fire activity in the early 1600s, while human-related factors were largely responsible for its decline in the early 1900s. The current FC in the Kalevalsky NP is close to the estimates reported for the pre-industrial colonisation period in Scandinavia, which suggests that the forests of the area currently maintain their close-to-natural fire regime. Fire has been the pivotal factor of forest dynamics in this biome and forest management should acknowledge that fact in developing conservation strategies in Karelia and other areas of European boreal forest. Introduction of prescribed burns of varying severity could be an important element of such strategies. Numéro de notice : A2020-579 Affiliation des auteurs : LIF+Ext (2020- ) Autre URL associée : vers HAL Thématique : FORET Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.foreco.2019.117770 Date de publication en ligne : 10/01/2020 En ligne : https://doi.org/10.1016/j.foreco.2019.117770 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=96690 [article]