College of Resource and Environmental Science, Xinjiang University, Urumqi, China.
State Key Laboratory of Desert and Oasis Ecology, Chinese Academy of Sciences, Xinjiang Institute of Ecology and Geography, Urumqi, China.
PLoS One. 2020 Mar 17;15(3):e0230196. doi: 10.1371/journal.pone.0230196. eCollection 2020.
Located in the intermediate zone between the taiga forests in Siberian Plain and the deserts in Central Asia, the Altai Mountains are of scientific concern about Holocene climate change in the past decades. However, researches about modern climate changes are relatively scarce in the Altai Mountains. In this study, temporal- spatial changes of air temperature and precipitation were investigated systematically in the Altai Mountains based on fifteen meteorological records over the period of 1970-2015. The Altai Mountains experienced a rapid warming trend with a rate of 0.41°C/decade and an insignificantly wetting trend at a rate of 4.82 mm/decade during 1970-2015. The magnitude of temperature trend was negatively correlated with elevation in cold season (spring and winter), whereas that was positively correlated with elevation in warm season (summer and autumn). The cyclonic anomalies to the northwest and an anticyclonic anomalies to the southeast blocked the southward cold air and then provided the favorable condition for an increasing precipitation via the southwesternly wind in the Altai Mountains.
位于西伯利亚平原的泰加林森林和中亚沙漠之间的中间地带，阿尔泰山在过去几十年中一直是人们关注全新世气候变化的科学热点。然而，关于现代气候变化的研究在阿尔泰山地区相对较少。本研究基于 1970-2015 年期间的 15 个气象记录，系统地研究了阿尔泰山地区气温和降水的时空变化。阿尔泰山在 1970-2015 年期间经历了快速变暖趋势，变暖率为 0.41°C/decade，增湿趋势不显著，增湿率为 4.82 mm/decade。在寒冷季节（春季和冬季），温度趋势的幅度与海拔呈负相关，而在温暖季节（夏季和秋季），温度趋势的幅度与海拔呈正相关。西北方向的气旋异常和东南方向的反气旋异常阻止了冷空气向南移动，然后通过西南风为阿尔泰山地区提供了增加降水的有利条件。
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