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Key periods of peatland development and environmental changes in the middle taiga zone of Western Siberia during the Holocene
Ambio ( IF 5.8 ) Pub Date : 2021-04-06 , DOI: 10.1007/s13280-021-01545-7
Andrey N Tsyganov 1, 2 , Evgeny A Zarov 3 , Yuri A Mazei 1, 2, 4 , Mikhail G Kulkov 3, 5 , Kirill V Babeshko 6, 7 , Svetlana Y Yushkovets 7 , Richard J Payne 8 , Joshua L Ratcliffe 9 , Yulia A Fatyunina 6 , Elya P Zazovskaya 10 , Elena D Lapshina 3
Affiliation  

The response of peatlands to climate change can be highly variable. Through understanding past changes we can better predict the response of peatlands to future climate change. We use a multi-proxy approach to reconstruct the surface wetness and carbon accumulation of the Mukhrino mire (Western Siberia), describing the development of the mire since peat formation in the early Holocene, around 9360 cal. year BP. The mire started as a rich fen which initiated after paludification of a spruce forest (probably in response to a wetter climate), while the Mukhrino mire progressed to ombrotrophic bog conditions (8760 cal. year BP). This transition coincided with the intensive development of mires in Western Siberia and was associated with active carbon accumulation (31 g m−2 year−1). The ecosystem underwent a change to a tree-covered state around 5860 cal. year BP, likely in response to warming and possible droughts and this accompanied low carbon accumulation (12 g m2 year−1). If the future climate will be warmer and wetter, then regional mires are likely to remain a carbon sink, alternatively, a reversion to the wooded state with reduced carbon sink strength is possible.



中文翻译:


全新世西西伯利亚中部针叶林带泥炭地发育与环境变化关键时期



泥炭地对气候变化的反应变化很大。通过了解过去的变化,我们可以更好地预测泥炭地对未来气候变化的反应。我们使用多代理方法来重建 Mukhrino 泥沼(西西伯利亚)的表面湿度和碳积累,描述了自全新世早期(大约 9360 cal)泥炭形成以来泥炭的发育过程。年BP。沼泽最初是一片肥沃的沼泽,是在云杉林荒芜化之后开始的(可能是为了应对潮湿的气候),而穆赫里诺沼泽则发展为蒙营养沼泽条件(距今 8760 年)。这一转变与西西伯利亚沼泽的密集发展同时发生,并与活性碳积累(31 gm -2-1 )相关。生态系统在5860 cal左右经历了树木覆盖状态的转变。年 BP,可能是为了应对变暖和可能的干旱,并且伴随着低碳积累(12 gm 2-1 )。如果未来的气候变得更加温暖和湿润,那么区域性的泥沼很可能仍然是碳汇,或者,有可能恢复到碳汇强度减弱的森林状态。

更新日期:2021-04-08
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