阿尔泰山全新世火灾动态及其驱动因素

IF 4.6 1区地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY

Geophysical Research Letters Pub Date : 2025-05-02 DOI:10.1029/2025GL116309

Yu Hu, Xiaozhong Huang, Yuan Li, Hongming Chen, Otgonbayar Demberel, Jun Zhang, Lixiong Xiang, Ling Wang, Xiaoyan Mu, Xiuxiu Ren, Jiawu Zhang, Mingrui Qiang, Jule Xiao

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引用次数: 0

摘要

火灾活动重塑了森林和草原生态系统的演替。然而，阿尔泰山脉的长期火灾历史及其驱动因素仍然缺乏文献记录和理解。本文以阿尔泰山托尔伯湖沉积物岩心中不同大小和形态的木炭为研究对象，探讨了全新世的火灾历史及其影响因素。在千年尺度上，火灾活动主要由水分驱动的生物量可用性调节。在~ 6000 BP之后，降水增加导致生物量增加和火灾活动增强，潜在的人类活动贡献更高。在百年尺度上，较低的火灾频率对应于较冷的气候事件。持续的全球变暖可能会增加阿尔泰地区发生火灾的风险。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Holocene Fire Dynamics in the Altai Mountains and Its Driving Factors

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Holocene Fire Dynamics in the Altai Mountains and Its Driving Factors

Fire activity reshapes the successions of forest and steppe ecosystems. However, the long-term fire history and its driving factors in the Altai Mountains remain poorly documented and understood. In this study, we explore the Holocene fire history and its influencing factors, based on different sizes and morphologies of charcoals in a sediment core from Tolbo Lake in the Altai Mountains. On a millennial-scale, fire activity was primarily regulated by moisture-driven biomass availability. After ∼6000 BP, increased precipitation led to higher biomass and enhanced fire activity, with potentially higher human activities contribution. At a centennial-scale, lower fire frequency corresponded to cold climate events in this study. Ongoing global warming may increase the risk of fires in the Altai region.

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来源期刊

Geophysical Research Letters 地学-地球科学综合

CiteScore

9.00

自引率

9.60%

发文量

1588

审稿时长

2.2 months

期刊介绍： Geophysical Research Letters (GRL) publishes high-impact, innovative, and timely research on major scientific advances in all the major geoscience disciplines. Papers are communications-length articles and should have broad and immediate implications in their discipline or across the geosciences. GRLmaintains the fastest turn-around of all high-impact publications in the geosciences and works closely with authors to ensure broad visibility of top papers.