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- W4321497853 abstract "重建丝绸之路近2000年温度变化历史,对深入理解过去全球变化规律及其对丝路文明兴衰的影响有独特价值。近年来,丝绸之路东段(主体是我国新疆及周边地区)高质量单点古温度记录不断涌现,提供了开展综合集成的数据基础。为推动对该区域过去2000年温度变化特征、现代暖期的历史地位评估及气候环境变化对丝路文明影响的认识进一步深入,本研究通过设置客观标准,从迄今已发表的30条古温度记录中筛选出10条基于湖泊沉积、冰芯、树轮等地质载体的高质量记录,开展综合集成研究。结果发现:(1)过去1000年温度变化记录的一致性较好,研究区经历了中世纪暖期(1000‒1250 AD)、小冰期(1450‒1850 AD)和现代暖期(1850 AD至今)等典型气候异常期;与过往认识不同,该区域现代暖期增温幅度并未超过中世纪暖期。(2)1-1000 AD研究区温度变化记录较少且差异较大,其所指示的汉代和隋唐时期的气候均同时存在温暖和寒冷两种矛盾结果。(3)中世纪的增温为丝路天山北道快速发展提供了气候环境背景,小冰期的降温对以嘉峪关封闭为标志的丝路衰落也产生过重要影响。需要指出,丝路东段1-1000 AD温度记录的稀缺和差异已经对厘清当时水文气候变化过程及其对丝路文明发展的影响形成了阻碍,未来亟需开发更多完整覆盖过去2000年的可靠记录,并着重查明前一千年温度变化是否存在局地信号。另一方面,丝路西段过去2000年温度变化研究仍相当薄弱,亟待开展高质量单点和综合研究,为推动丝绸之路全线气候环境演变‒文明兴衰耦合关系的全面深入理解奠定坚实基础。" @default.
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- W4321497853 date "2023-06-14" @default.
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- W4321497853 title "丝绸之路过去2000年温度变化历史<bold>: </bold>集成和展望" @default.
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