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在石沉坑土壤 (极地乌拉尔) 中PAH分布的模式

Evgenia Yakovleva¹, Dmitry Gabov¹, Elena Shamrikova¹

¹Institute of Biology, Federal Research Centre Komi Science Centre of the Ural Branch of the Russian Academy of Sciences (IB FRC Komi SC UB RAS), 28 Kommunisticheskaya St., Komi Republic, Syktyvkar, 167982, Russian Federation.

Environmental research

|April 7, 2025

概括

多环芳 (PAH) 积聚在极地乌拉尔山脉的岩石坑土壤中,受侵蚀和植物群落的影响. 它们的起源主要是小动物性,与有机物和古煤有关.

科学领域:

环境科学环境科学
土壤科学土壤科学
地质化学地质化学

背景情况:

多环芳 (PAH) 是一种持久性有机污染物.
卡斯特沉坑代表着独特的土壤环境.
极地乌拉尔是一个敏感的北极地区,之前的PAH研究有限.

研究的目的:

综合研究多环芳 (PAH) 积累在石灰坑土壤和极地乌拉尔的背景土壤.
评估石过程和植物群落对PAH分布的影响.
为了确定这些土壤中PAHs的来源.

主要方法:

从原和草原息地收集和分析53个土壤样本.
主要组件分析 (PCA) 和集群分析用于分布模式的应用.
测量PAH度和相关的土壤参数 (有机碳,).

主要成果:

石灰岩过程,特别是深沉洞中的表面侵蚀,显著增加了PAH含量.
PAH积累峰值沿着沉坑斜坡的土壤形状移动,表明迁移和分层.
氧化的积累与植物物种组成,有机碳和相关,这表明它是由性物质和木质素形成的.
古煤也导致了土壤的PAH水平.
诊断比率证实了PAHs的小孩起源.

结论:

地形和相关的侵蚀是极地乌拉尔土壤中PAH积累的关键驱动因素.
植物群体的组成在PAH分布中起作用.
确定的PAHs主要来自土壤形成过程和古煤来源,而不仅仅来自人为投入.

关键词:

积累积累是一种积累.卡斯特的现象卡斯特的现象移民移民移民这些PAHs是PAH.植物群落植物群落

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