Soils in Karst Sinkholes Record the Holocene History of Local Forest Fires at the North of European Russia

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ID: 268342
2020
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Abstract
Despite the abundance of charcoal material entrapped in soils, they remain relatively less studied pyrogenic archives in comparison to the sedimentary paleofire records (e.g., lacustrine and peat deposits), and that is especially the case in most of Russia’s territory. We report here on the deep soil archives of the Holocene forest fires from the Pinega District of the Arkhangelsk region (64.747° N, 43.387° E). Series of buried soil profiles separated by charcoal layers and clusters were revealed in specific geomorphological traps represented by the active and paleokarst subsidence sinkholes on sulfate rocks overlaid by glacial and fluvial deposits. We combine the study of soil morphology and stratigraphy with a set of radiocarbon data on charcoal and soil organic matter, as well as the anthracomass analysis, to extract a set of paleoenvironmental data. A total of 45 radiocarbon dates were obtained for the macrocharcoal material and the soil organic matter. The maximum temporal “depth” of archives estimated from the radiocarbon dating of macrocharcoal reached 10,260 ± 35 cal yr BP. Soil formation with Podzols established at the inter-pyrogenic stages repeatedly reproduced within the period of ten thousand years, while the dominant tree species was Pinus sp. According to the macrocharcoal data, the intervals between fires have shortened in the last thousand years. Dendrochronological estimates suggest the occurrence of fires in almost every decade of the 20th and early 21st centuries. This is the first study of the millennia-scale soil record of forest fires in this particular region of Russia.
Reference Key
goryachkin2020forestssoils Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Nikita Mergelov,Dmitry Petrov,Elya Zazovskaya,Andrey Dolgikh,Alexandra Golyeva,Vladimir Matskovsky,Renat Bichurin,Sofia Turchinskaya,Vladimir Belyaev,Sergey Goryachkin;Nikita Mergelov;Dmitry Petrov;Elya Zazovskaya;Andrey Dolgikh;Alexandra Golyeva;Vladimir Matskovsky;Renat Bichurin;Sofia Turchinskaya;Vladimir Belyaev;Sergey Goryachkin;
Journal forests
Year 2020
DOI
10.3390/f11121268
URL
https://sciprofiles.com/publication/view/30ea73e08fd5f3b7a3157aeab80f222c
Keywords
pyrogenic carbon paleofires 14c ams soil archive dendrochronological reconstruction pyrogenic carbon paleofires 14c ams soil archive dendrochronological reconstruction

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