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泥炭中胡敏酸与纤维素δ¹³C序列初步对比

PRELIMINARY COMPARISON OF THE δ¹³C SEQUENCE OF HUMIC ACID WITH THAT OF CELLULOSE IN PEAT

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【Author】 MAO Xu-mei~1,WANG Feng-lin~1,CHENG Sheng-gao~1,HONG Ye-tang~2,ZHU Yong-xuan~2,WANG Hua~2 (1. School of Environmental Studies, China University of Geosciences, Wuhan 430074, China; 2. Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China)

【机构】中国地质大学环境学院；中国科学院地球化学研究所；中国科学院地球化学研究所湖北武汉430074；湖北武汉430074；贵州贵阳550002；贵州贵阳550002；

【摘要】泥炭纤维素δ13C变化是反映气候干湿变化的一个重要气候代用指标,但泥炭纤维素的提取工序复杂,因泥炭胡敏酸提取方便,为了探索泥炭胡敏酸δ13C对古气候的指示意义,对金川泥炭胡敏酸δ13C与泥炭纤维素δ13C进行了对比研究,发现胡敏酸δ13C序列变化与纤维素δ13C序列变化非常相似,且胡敏酸δ13 C序列的变化更为明显,胡敏酸δ13C值对古气候的干湿变化也具有一定的指示作用,但应用时要慎重。更多还原

【Abstract】 The δ¹³C of cellulose in peat is an important substituted indicator of climatic change （e.g. humidity）. Being measured and compared to the δ¹³C sequence of cellulose the δ¹³C sequence of humic acid is very similar to the former’s, and changes more distinctly than the latter. So the δ¹³C of humic acid in peat can also indicate the change of humidity to some degree, but cautions should be taken when it is used.更多还原