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chang jiang zhong xia you di qu 7500 5000ab.p. qi hou bian hua xu lie de chu bu yan jiu
Author(s): 
Pages: 73-85
Year: Issue:  4
Journal: Marine Geology & Quaternary Geology

Keyword:  palynological spectravegetation typepalaeoclimateweighted distributing method;
Abstract: 孢粉分析方法可以比较客观地反映古植被类型,而各植被类型只能在一定的气候指标范围内生长。本文根据这一基本原理,利用现代植被生长的基本气候指标和有关气象资料,对长江中下游地区7500—5000aB.P.的孢粉资料进行处理、转化,从而得出这一阶段每500年一个时间段的气候变化序列。研究结果表明,研究区在7500—5000aB.P.时间内,年平均温度偏暖于今日-0.1—1.5℃,最高温出现在6500—6000aB.P.,气温高于现在1.5℃。
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