Middle to Late Holocene vegetation shifts in the NW Transylvanian lowlands (Romania)
Middle to Late Holocene vegetation shifts in the NW Transylvanian lowlands (Romania)
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特兰西瓦尼亚西北部低地中全新世中晚期植被变化（罗马尼亚）
DOI：
10.5038/1937-8602.59.1.2
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Andrei
中科院分区：
文献类型：
--
作者：
R. Grindean;I. Tanțău;S. Farcas;Andrei
Iaz泥炭沼泽位于跨西尔瓦尼亚西北部海拔300米处，取芯以研究该地区中晚全新世植被的变化。花粉记录得到了7个~（14）C测年的支持。该序列的基础开始于中全新世，当时外部林地主要由Corylus avellana和Quercetum mixtum的其他成分组成。桦鹅耳芹（Carpinus betulus）的局部建立发生在5700卡尔·年BP，最大值约在4900卡尔·年BP。在4800 cal. yr BP，Fagus sylvatica成为当地建立和扩大，可能是由于潮湿的气候条件和主导的mesothermophilous林地从4300 cal. yr BP起。在较高的水分期间，落叶林被喜湿的赤杨带覆盖。自6300 cal. yr BP，当Cerearia和Secale花粉和其他杂草类群开始定期出现在整个序列中的人类活动的迹象记录。虽然有时强烈，但在过去的635年中，人为因素只在植被变化中发挥了主要作用。
The Iaz peat bog, located in northwestern Transylvania at 300 m a.s.l., was cored to study the Middle to Late Holocene vegetation shifts in the area. The pollen record is supported by seven 14 C datings. The base of the sequence starts in the Middle Holocene, when the outer woodlands were dominated by Corylus avellana together with other components of the Quercetum mixtum. The local establishment of Carpinus betulus occurred at 5700 cal. yr BP with maximum values at around 4900 cal. yr BP. At 4800 cal. yr BP, Fagus sylvatica became locally established and expanded, possibly as a result of moist climatic conditions and dominated the mesothermophilous woodlands from 4300 cal. yr BP onwards. During the periods of greater moisture, the deciduous forest was overgrown by the hygrophilous Alnus glutinosa belt. Indications of human activities in the area were recorded since 6300 cal. yr BP, when Cerealia and Secale pollen and other ruderal taxa start to appear regularly throughout the sequence. Although intense at times, the anthropogenic factor only played a major role in the vegetation changes during the last 635 years.