| 小兴安岭过去5000年的泥炭δ~(13)C记录 |
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| 引用本文： | 林庆华,冷雪天,洪冰. 小兴安岭过去5000年的泥炭δ~(13)C记录[J]. 地球与环境, 2004, 0(1) |
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| 作者姓名： | 林庆华 冷雪天 洪冰 |
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| 作者单位： | 中国科学院环境地球化学国家重点实验室，东北师范大学泥炭研究所，中国科学院环境地球化学国家重点实验室 贵州贵阳550002，吉林长春130026，贵州贵阳550002 |
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| 基金项目： | 目组在国家自然科学基金的资助下进行该区域的贫 |
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| 摘 要： | 小兴安岭植物体中δ13C不仅受区域湿度变化控制,也受温度变化控制。泥炭纤维素的δ13C曲线,较好地响应了小兴安岭地区过去5000年来气候,特别是温度和湿度的演变过程。5.1～3.0kaBP、3.0～1.8kaBP、1.8kaBP迄今,小兴安岭经历了3个千年尺度的气候波动,气候演变过程为温暖湿润→温凉较湿→冷凉较湿。在千年尺度的气候波动上,又叠加着百年尺度的气候变化,在3.0kaBP以来更为显著。相应的,泥炭发育也经历了从富营养、中营养到贫营养阶段。
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| 关 键 词： | 泥炭 小兴安岭 气候波动 |
PEAT δ~(13)C RECORD OF CLIMATE CHANGE IN XIAO XINGAN LING IN THE PAST 5000 YEARS |
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| LIN Qing-hua,LENG Xue-tian,HONG Bing uiyang ,China. PEAT δ~(13)C RECORD OF CLIMATE CHANGE IN XIAO XINGAN LING IN THE PAST 5000 YEARS[J]. Earth and Environment, 2004, 0(1) |
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| Authors: | LIN Qing-hua LENG Xue-tian HONG Bing uiyang China |
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| Affiliation: | LIN Qing-hua~1,LENG Xue-tian~2,HONG Bing~1 uiyang 550002,China, 2. Institute of Peat Mire,Northeastern Normal University,Changchun 130026,China) |
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| Abstract: | The δ~(13)C values of plants in Xiao Hinggan Ling are controlled not only by environmental temperature, but also by humidity. The peat cellulose δ~(13)C sequence well reflects variations in climate, especially temperature and humidity in the past 5000 years in Northeast China. During the periods of 5.1-3.0 ka B.P., 3.0-1.8 ka B.P., 1.8 ka B.P. to present, 3 climate fluctuations of millennium scale are recognized in Xiao Hinggan Ling, and a series of climate fluctuations of centennial scale are overlapped, especially from nearly 3.0 ka B.P. The climatic development stages of 5 ka B.P. are characterized by a warm (cool) and humid→cool and humid→cold trend. Correspondingly, the peat development stages follow the order of eutrophic→mesotrophic→oligotrophic. |
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| Keywords: | peat δ~(13)C climate change |
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