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首页> 外文期刊>Journal of quaternary science: JQS >The role of climate variability and fire in early and mid Holocene forest dynamics of southern Sweden
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The role of climate variability and fire in early and mid Holocene forest dynamics of southern Sweden

机译：气候变化和火灾在瑞典南部全新世早期和中期森林动态中的作用

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摘要

The objective of this study was to investigate the possible links between regional climate, fire and vegetation at the small spatial scale during the early and mid Holocene in southern Sweden using pollen, plant macrofossil and charcoal records from a small bog. The fire history was compared with climate reconstructions inferred from various proxy records in the study region. High fire activity is related to dry and warm climate around 8550, 7600, 5500-5100 and 4500 cal. a BC. Low fire activity ca. 6500-6000 and 4750 BC may correspond to the widespread '8.2 k event' (ca. 6200 BC) recorded across the North Atlantic region, and a later, brief period of increased precipitation, respectively. The decrease in broadleaved trees culminating ca. 6500-6000 BC correlates with the '8.2 k event'. A long mid Holocene period with low fire activity (ca. 4350-1000 BC) agrees with the pattern emerging for Europe from the global charcoal database, and may correspond to generally wetter and cooler conditions. High fire activity ca. 8550 BC probably triggered the local establishment of Corylus. Warmer and drier conditions (and high fire activity) ca. 7600 BC might have favoured the establishment of Alnus, Quercus and Tilia. The fire-adapted Pinus maintained important populations throughout the early and mid Holocene. Copyright _ 2008 John Wiley & Sons, Ltd.
机译：这项研究的目的是利用花粉，植物化石和小沼泽的木炭记录，研究瑞典南部全新世早期和中期在较小空间尺度上区域气候，火与植被之间的可能联系。将火灾历史与根据研究区域的各种代理记录推断出的气候重建进行了比较。高火活动与8550、7600、5500-5100和4500 cal附近的干燥温暖气候有关。公元前。低火活动率6500-6000和4750 BC可能分别对应于整个北大西洋地区记录的“ 8.2 k事件”（约6200 BC），以及稍后短暂的降水增加时期。阔叶树的减少最终导致公元前6500-6000年与“ 8.2 k事件”相关。全新世中长期处于低火活动时期（约4350-1000 BC），这与全球木炭数据库在欧洲出现的模式相吻合，并且可能对应于更湿润和凉爽的气候条件。高火活性公元前8550年可能触发了Corylus在当地的建立。较干燥和干燥的条件（以及高火势）。公元前7600年可能赞成建立Alnus，Quercus和Tilia。经过火适应的松树在全新世早期和中期一直保持着重要的种群。版权所有_ 2008 John Wiley＆Sons，Ltd.

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