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Jabłońska, Agnieszka, 2021. Uncovering climate and human signals in near-millennium annual fire chronology for Norrbotten county, Northern Sweden. Second cycle, A2E. Alnarp: SLU, Southern Swedish Forest Research Centre

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Abstract

Forest fire is one of the major factors driving the dynamics of the boreal forest.
Climate has the most significant contribution in shaping the fire occurrence, its
spatial extent and severity. Anthropogenic activities have contributed to variation in
fire activity, although the timing and the scale of the human impact are still heavily
debated.
Millennia-long annual records, which can inform us on the interplay of climate and
human influences on fire activity in a long-term perspective, are largely missing for
European boreal forests. To address this knowledge gap, I developed a
dendrochronological reconstruction of fire activity using fire-scarred dead and live
Scots pine trees in Norrbotten county, northern Sweden. Site reconstructions (n = 24)
extended from 900-1200 AD to the present time. To assess the degree of climatic
forcing upon fire activity, I conducted superposed epoch analysis using the ten largest
fire years and Old World Drought Atlas.
Fire occurrence varied significantly with time, with the most extensive fire years
occurring during the drier-than-average conditions. Analysis of fire activity with the
human population data extending to the mid-1500s suggested a negative correlation
between the two factors.

Main title:Uncovering climate and human signals in near-millennium annual fire chronology for Norrbotten county, Northern Sweden
Authors:Jabłońska, Agnieszka
Supervisor:Drobyshev, Igor and Niklasson, Mats
Examiner:Brunet, Jörg
Series:UNSPECIFIED
Volume/Sequential designation:UNSPECIFIED
Year of Publication:2021
Level and depth descriptor:Second cycle, A2E
Student's programme affiliation:SM001 Euroforester - Master's Programme 120 HEC
Supervising department:(S) > Southern Swedish Forest Research Centre
Keywords:Dendrochronology, forest fire history, climate, human impact, boreal forests
URN:NBN:urn:nbn:se:slu:epsilon-s-17424
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-s-17424
Subjects:Forestry - General aspects
Forest injuries and protection
Language:English
Deposited On:13 Dec 2021 09:16
Metadata Last Modified:14 Dec 2021 02:00

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