末次盛冰期中国南方地质载体揭示的气候响应模式差异  

Differences in Climate Response Patterns Revealed by Geological Carriers in Southern China during the Last Glacial Maximum

作　　者：卢海欣 

机构地区：[1]浙江师范大学地理与环境科学学院,浙江 金华

出　　处：《气候变化研究快报》2024年第5期1089-1097,共9页Climate Change Research Letters

摘　　要：末次盛冰期(LGM)是距今最近的全球冰量鼎盛时期。这一时期全球显著变冷,气候状态与现代差异巨大,因此成为古气候研究中的热点时期。中国南方地处亚热带气候区,对气候变化响应敏感,有学者已对LGM期间该地区的气候特征进行了初步研究,但南方地区内部气候特征的差异仍未得到充分认识。为此文章梳理了LGM时期中国南方不同区域的地质记录,总结了这一时期南方地区气候环境的基本特征,并对其所呈现的区域性差异进行分析。研究表明LGM期间中国南方不同区域的地质载体对气候变化的响应存在两种模式,一种是以冷干的气候特征为主,集中在东南沿海与西南地区;另一种则呈现为寒冷湿润的气候模式,主要集中于长江中下游地区。进一步分析认为北半球夏季太阳辐射减弱和大陆冰盖扩张可能是南方地区冷干气候模式的主要驱动因素,而长江中下游一带的冷湿模式可能与ENSO活动增强和夏季风减弱导致的梅雨量增加有关。上述研究为深入探讨LGM时期中国南方气候特征提供了理论基础,也为预测未来气候变化提供了宝贵的参考。The Last Glacial Maximum (LGM), with striking global cooling and remarkable differences in climate conditions compared to modern times, was the most recent peak in global ice volume, making it one of the hot topics in paleoclimate research. Southern China is located in the subtropical climate zone and is sensitive to the response to climate change. Scholars have conducted preliminary studies on the climate characteristics in the region during the LGM period, but the differences in the climatic characteristics in the southern region are still not fully recognized. Therefore, this paper collected the geological records of different regions in southern China during the LGM period, summarized the basic characteristics of the climatic environment in the southern region, and analyzed the regional differences it presents.

关 键 词：末次盛冰期 气候对比 石笋 孢粉 ENSO 梅雨 

分 类 号：P73[天文地球—海洋科学]