Abstract—

A middle-taiga iron-illuvial podzol (Glossic Endogleyic Albic Podzol) was studied on an ancient eolian dune in the Bol’shoi Yugan River basin (the Ob’ River tributary, Surgut region), near the large-scale archaeological research site. The radiocarbon age of 31 charcoals was determined, and 8 variants of the location of charcoal-containing soil zones relative to other morphological patterns were identified. It was proved that charcoal can help in dating the time of mosaic pattern formation, and the development of podzolic horizon coincided with intense wildfires in the second half of the Holocene. It was found that charcoal-containing soil zones first appeared in soils about 5 ka ago. Charcoals older than 5 ka cal. BP were not found. Pyrogenic events became twice more frequent at the beginning of the third millennium BP, with their maximum in the middle of the third millennium BP. The frequency of pyrogenic events decreased noticeably at the very end of the second millennium BP. Many peaks of pyrogenic events during the last five millennia coincided with the periods of archaeological cultures. An assumption that the continuous existence of forest environment leads to the permanent burial of charcoal due to fall of a tree accompanied by its uprooting was partially confirmed.

中文翻译：

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西西伯利亚中部针叶林火山灰中的木炭作为地球系统历史的指标

摘要-

在大型考古研究地点附近的 Bol'shoi Yugan 河流域（Ob' River 支流，Surgut 地区）的一个古老的风成沙丘上研究了一个中针叶林铁-冲积灰化岩（Glossic Endogleyic Albic Podzol）。确定了 31 种木炭的放射性碳年龄，并确定了 8 种含炭土壤区域相对于其他形态模式的位置变体。事实证明，木炭可以帮助确定马赛克图案形成的时间，而灰化层的发育恰逢全新世下半叶的强烈野火。发现含炭土壤带最早出现在大约 5 ka 以前的土壤中。超过 5 大卡的木炭。没有找到 BP。在公元前第三个千年之初，热原事件变得更加频繁，在公元前第三个千年中期达到最大值。在第二个千年末期，热源事件的频率显着下降。在过去的五千年中，许多热原事件的高峰与考古文化时期相吻合。森林环境的持续存在导致树木倒下并连根拔起导致木炭永久埋葬的假设得到部分证实。