Startsev Viktor, Gorbach Nikolay, Mazur Anton, Prokushkin Anatoly, Karpenko Lyudmila, Dymov Alexey
Institute of Biology of Komi Science Centre of the Ural Branch of the Russian Academy of Sciences, Syktyvkar 167982, Russia.
Institute of Natural Sciences, Pitirim Sorokin Syktyvkar State University, Syktyvkar 167000, Russia.
Plants (Basel). 2022 Dec 12;11(24):3478. doi: 10.3390/plants11243478.
Fires are a naturally cyclical factor regulating ecosystems’ function and forming new postfire ecosystems. Peat soils are unique archives that store information about ecological and climatic changes and the history of past fires during the Holocene. The paper presents a reconstruction of the dynamics of fires in the subzone of the middle taiga of Western Siberia in the Holocene. Data on fires were obtained based on the results of a study of the content of macroscopic coal particles and radiocarbon dating. The effect of fires on soil organic matter (SOM) was estimated using 13C NMR spectroscopy and the content of polyaromatic hydrocarbons (PAHs). It is shown that throughout the Holocene, the peatlands studied were prone to fires. The conducted analyses show that the maximum content of charcoal particles is observed in the Atlantic (9100−5800 cal. B.P.) and Subatlantic (3100 cal. B.P. to the present) periods. The high correlation dependence of the content of coals with the content of PAHs (r = 0.56, p < 0.05) and aromatic structures of SOM (r = 0.61, p < 0.05) in peat horizons is shown, which can characterize these parameters as a reliable marker of pyrogenesis.
火灾是调节生态系统功能并形成新的火灾后生态系统的自然周期性因素。泥炭土是独特的档案库，存储着有关全新世期间生态和气候变化以及过去火灾历史的信息。本文介绍了西西伯利亚中部泰加林亚区全新世火灾动态的重建。火灾数据是基于对宏观煤颗粒含量和放射性碳测年的研究结果获得的。利用13C核磁共振光谱和多环芳烃（PAHs）含量估算了火灾对土壤有机质（SOM）的影响。结果表明，在全新世期间，所研究的泥炭地容易发生火灾。进行的分析表明，在大西洋期（约公元前9100 - 5800年）和亚大西洋期（约公元前3100年至今）观察到木炭颗粒的最大含量。泥炭层中煤的含量与PAHs含量（r = 0.56，p < 0.05）和SOM的芳香结构（r = 0.61，p < 0.05）之间存在高度相关性，这可以将这些参数表征为热成因的可靠标志。
