{"title":"Holocene Fire Dynamics in the Altai Mountains and Its Driving Factors","authors":"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","doi":"10.1029/2025GL116309","DOIUrl":null,"url":null,"abstract":"<p>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.</p>","PeriodicalId":12523,"journal":{"name":"Geophysical Research Letters","volume":"52 9","pages":""},"PeriodicalIF":4.6000,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2025GL116309","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Geophysical Research Letters","FirstCategoryId":"89","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1029/2025GL116309","RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"GEOSCIENCES, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
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.
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.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
