随着全球变暖和干旱化的加剧，全球森林火灾呈现高发趋势。北半球高纬度地区的泰加林（Taiga）由于增温幅度远大于全球平均水平，面临更高的森林火灾风险。新疆阿尔泰林区泰加林是西伯利亚泰加林在我国的延伸，是我国高纬度森林的重要组成部分。火干扰是阿尔泰森林生态系统演替和更新的主要因素，但是该地区森林火灾的研究仍处于起步阶段，较短的火灾记录数据大大限制了在更长的时间尺度对林火驱动机制的深入理解，增加了森林火灾预测和管理的不确定性。通过在研究区域建立火疤木和树木年轮宽度数据库，重建新疆阿尔泰林区泰加林过去数百年的森林火灾和气候变化历史，明确历史火灾的时空变化特征。同时结合大尺度气候涛动数据，区分气候系统自然变异性（工业革命以前）和人类活动导致的气候变暖（工业革命以后）分别对火灾的影响，阐明历史火灾在不同时间尺度的气候驱动机制。为该地区林火预测和林火管理策略提供理论支撑。

Global warming and associated drying trend have led to a more frequent occurrence of forest fire. Taiga forest (also known as boreal forest) in the northern high latitudes are exposed to greater fire risks, as they are experiencing much higher warming rate than the global mean level. Taiga forest in the Altai Mountains, the south extension of Taiga in Siberia, is an essential part of the high latitudinal forest in China. However, the forest fire study is still scarce in this region. The fire documentation of the Altai forests covering the last decades has largely limited the understanding of the driving mechanism of forest fires at long time spectrum, and bring large uncertainties to the fire prediction and management in the study region. By reconstructing the fire occurrence patterns and climate history using fire scar and tree-ring width materials, we are planning to discriminate the contributions of natural climate variability and anthropogenic warming before/after the Industrial Revolution, and clarify the climatic driving mechanism at annual to decadal time scale over the last centuries. All the knowledge derived from this study could constitute a theoretical basis of the forest fire management and projection.