Scholarlink

<p>Large explosive volcanic eruptions can cover wide areas of land with tephra, sometimes with profound hydrological, ecological, and societal impacts. However, while consequences of tephra fallout and flow deposits have been well studied on annual to decadal timescale, little is known about centennial and longer-term changes in vegetation composition. Here, we consider the enduring impacts of the 946 CE Millennium Eruption of the Changbaishan volcano. We reconstruct the pre-eruption vegetation composition based on species, age, and size of carbonized trees recovered from the pyroclastic deposits and analysis of phytolith records in peat cores. Compared with the early 10th century forest composition and structure, the present montane forest hosts a higher abundance of broad-leaved species. Higher elevations, which today are dominated by alpine tundra, were covered in a spruce forest before the eruption. These differences reflect the long process of ecological recovery following the eruption rather than the effects of recent warming, as has been suggested. However, present warming trends are likely to drive the ecological succession towards a reduction of the alpine vegetation zone. Our study emphasizes the importance of interpreting contemporary ecological change in the context of past massive disturbances, together with subfossil evidence of vegetation composition.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Impacts of the Millennium Eruption and climate change on vegetation species composition of Changbaishan

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年10月17日

查看全文
  • Haibo Du,
  • Clive Oppenheimer,
  • Ulf Büntgen,
  • J. Julio Camarero,
  • Michael C. Stambaugh,
  • Mai-He Li,
  • Guizai Gao,
  • Dongmei Jie,
  • Hang Yin,
  • Mia M. Wu,
  • Shengwei Zong,
  • Hong S. He,
  • Zhengfang Wu

摘要

Large explosive volcanic eruptions can cover wide areas of land with tephra, sometimes with profound hydrological, ecological, and societal impacts. However, while consequences of tephra fallout and flow deposits have been well studied on annual to decadal timescale, little is known about centennial and longer-term changes in vegetation composition. Here, we consider the enduring impacts of the 946 CE Millennium Eruption of the Changbaishan volcano. We reconstruct the pre-eruption vegetation composition based on species, age, and size of carbonized trees recovered from the pyroclastic deposits and analysis of phytolith records in peat cores. Compared with the early 10th century forest composition and structure, the present montane forest hosts a higher abundance of broad-leaved species. Higher elevations, which today are dominated by alpine tundra, were covered in a spruce forest before the eruption. These differences reflect the long process of ecological recovery following the eruption rather than the effects of recent warming, as has been suggested. However, present warming trends are likely to drive the ecological succession towards a reduction of the alpine vegetation zone. Our study emphasizes the importance of interpreting contemporary ecological change in the context of past massive disturbances, together with subfossil evidence of vegetation composition.