Knowledge of past climatic variability in the eastern Tianshan Mountains of arid Central Asia is still limited due to the lack of long-term instrumental data. In this study, we develop a March–August mean temperature reconstruction since 1766 ce based on annual tree-ring widths of Schrenk spruce (Picea schrenkiana Fisch. et Mey.). The reconstruction accounts for 51.8% of the temperature variation during the calibration period (1957–2017). Over the last two and a half centuries, the region has experienced six warm periods, namely 1766–1792, 1803–1827, 1878–1886, 1904–1916, 1926–1935, and 1982–2015. The reconstruction also indicates the occurrence of two significant cold periods, 1821–1857 and 1931–1980. Over the past 252 years, the climate in this region has shifted between warm-dry and cold-wet periods. However, a strong warm-wet trend since the 1980s is evident. There is a strong positive correlation between the tree-ring temperature reconstruction and the North Atlantic Oscillation, as well as a close relationship with strong volcanic eruptions in the mid-high latitudes.

由于缺乏长期的仪器数据，对干旱中亚天山东部东部过去的气候变化的了解仍然有限。在这项研究中，我们开发了自1766三月，八月平均气温重建CE基于雪岭云杉的年树轮宽度（雪岭云杉Fisch。等）。在校准期间（1957–2017），重建占温度变化的51.8％。在过去的两个半世纪中，该地区经历了六个温暖期，分别是1766–1792、1803–1827、1878–1886、1904–1916、1926–1935和1982–2015。重建还表明发生了两个重要的寒冷时期，即1821年至1857年和1931年至1980年。在过去的252年中，该地区的气候在暖干和冷湿时期之间转移。但是，自1980年代以来，出现了强烈的暖湿趋势。树轮温度重建与北大西洋涛动之间有很强的正相关关系，与中高纬度地区强烈的火山喷发有密切的关系。