Changing Climates, Earth Systems and Society
Changing Climates, Earth Systems and Society
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DOI：
10.1007/978-90-481-8716-4
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
J. Dodson
中科院分区：
文献类型：
--
作者：
J. Dodson
泥炭地是过去气候变化的重要自然档案，主要是因为它们对水平衡变化和泥炭沉积物测年可能性的敏感性。此外，泥炭地是重要的汇和温室气体的潜在来源。本章第一部分讨论了一系列在泥炭岩心中研究的成熟和新颖的指标（泥炭腐殖化、大型化石、有遗嘱变形虫、亚化石叶的气孔记录、有机生物标志物和稳定同位素比、风成沉积物流入和地球化学），这些指标用于气候和环境重建，以及这些沉积物测年的最新进展。第二部分重点讨论泥炭地生态系统作为温室气体源或汇可能发挥的作用。重点放在斯堪的纳维亚半岛北部不连续永久冻土地区泥炭地过去和未来的发展，以及欧洲西北部开采泥炭地再生作为碳汇或碳源的作用。
Peatlands are an important natural archive for past climatic changes, primarily due to their sensitivity to changes in the water balance and the dating possibilities of peat sediments. In addition, peatlands are an important sink as well as potential source of greenhouse gases. The first part of this chapter discusses a range of well-established and novel proxies studied in peat cores (peat humification, macrofossils, testate amoebae, stomatal records from subfossil leaves, organic biomarkers and stable isotope ratios, aeolian sediment influx and geochemistry) that are used for climatic and environmental reconstructions, as well as recent developments in the dating of these sediments. The second part focuses on the role that peatland ecosystems may play as a source or sink of greenhouse gases. Emphasis is placed on the past and future development of peatlands in the discontinuous permafrost areas of northern Scandinavia, and the role of regenerating mined peatlands in north-western Europe as a carbon sink or source.