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永久土泥土的开始和发展在中国东北部的晚期全新世纪

Rui Liu¹, Lin Zhao², Xiaodong Wu^1,3,4

¹Heilongjiang Province Key Laboratory of Geographical Environment Monitoring and Spatial Information Service in Cold Regions Harbin Normal University Harbin China.

Ecology and evolution

|April 14, 2025

概括

中国东北部的永久土泥炭地在过去3500年里发生了显著的进化,主要是由气候变化推动的. 了解这种过去的发展对于预测未来的泥炭地对全球气候变化的反应至关重要.

科学领域:

古生态学古生态学
四分学科学四分学科学
气候科学气候科学

背景情况:

泥炭地对全球碳循环至关重要,但人们对永久土泥炭地的形成和气候变化反应知之甚少.
重建永久土泥炭地的历史对于理解过去的环境变化和预测未来的碳动态至关重要.

研究的目的:

在过去3500年中,重建大金山 (GKM) 永久土泥炭地的进化历史.
确定影响泥炭地开发和状态变化的关键驱动因素,特别是气候 (从优质到寡质).

主要方法:

利用永久土泥炭地核心的古生物学分析.
使用加速器质谱 (AMS) 14C约会来建立一个时间框架.
解释了随着时间的推移而发生的植被变化和相关的气候条件.

主要成果:

从公元前3500年到现在,确定了不同的植被和气候阶段,表明了泥炭地化,开始,繁荣,停滞和恢复的时期.
在公元前1650年至公元前750年间,记录了从安trophic转变为 mesotrophic 的情况,并在公元前750年之后转变为 oligotrophic 的情况.
气候变化 (温暖/潮湿,寒冷/潮湿,干燥/寒冷) 与泥炭地发展阶段之间有很强的相关性.

结论:

GKM永久土泥炭地的演变主要受到气候波动的控制.
这些永久土泥炭地的未来发展和碳捕集潜力取决于全球气候变化轨迹.

关键词:

东亚季风是东亚的季风.更大的khingan山脉.在末期的全新纪 (Holocene) 末期.泥炭地的演变泥炭地的演变永久土 (Permafrost) 是一个永久土.对于花粉来说,这是一个很好的选择.植被动态植物动态

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