• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Botanica Helvetica >Zur Langzeitökologie des Lärchen-Arvengürtels in den südlichen Walliser Alpen
【24h】

Zur Langzeitökologie des Lärchen-Arvengürtels in den südlichen Walliser Alpen

机译：瓦莱州阿尔卑斯山南部落叶松松树带的长期生态

获取原文
获取原文并翻译 | 示例
       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Palaeoecological studies in the "Alpe d'Essertse" area have provided much information about vegetation changes and timberline fluctuations during the Holocene. In this study we repeated previous biostratigraphic investigations using plant macrofossils to improve their temporal and taxonomic resolution and to test their reliability. By analyzing 0.5-cm layers of a lake sediment we reached a temporal resolution of 44 years, and we were able to reconstruct vegetation changes in the surrounding area at species level. The sedimentary record analyzed extends from the Late-Glacial to the late Holocene. Alpine grasslands (12'000-11'000 cal. BP) were afforested by Larix decidua, Juniperus nana, and Pinus cembra (11,000-9'600 cal. B.P.). Stable subalpine larch-stone pine-forests (9'600-4'900 cal. BP) were followed by shrublands and meadows as a consequence of the climatically and anthropogenically induced destruction of forest vegetation (4'900-2'600 cal. BP). Changes in the abundance of P. cembra and L. decidua needles as well as changes of the other taxa were consistent with those found in previous studies from the same lake. Our results demonstrate that plant-macrofossil records can be reproduced spatially and temporally on separate cores with independent ~(14)C chronologies.
机译：在“ Als d'Essertse”地区的古生态学研究提供了许多关于全新世期间植被变化和林线波动的信息。在这项研究中，我们重复了以前使用植物大化石进行的生物地层学调查，以改善其时间和生物分类分辨率并测试其可靠性。通过分析0.5厘米厚的湖泊沉积物，我们达到了44年的时间分辨率，并且能够在物种水平上重建周围地区的植被变化。分析的沉积记录从晚冰河期到新世晚期。落叶松，落叶松纳纳和松树皮（11,000-9,600 cal.B.P.）造林了高山草原（BP海拔12'000-11'000 BP）。由于气候和人为因素造成的森林植被破坏（4'900-2'600 cal。BP），因此稳定的亚高山落叶松石松林（9'600-4'900 cal。BP）之后是灌木丛和草甸。 ）。 P. cembra和L. decidua针的丰度变化以及其他类群的变化与先前在同一湖中进行的研究一致。我们的结果表明，植物宏化石记录可以在独立的〜（14）C时间序列的独立核心上进行时空复制。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号