| 近2000年都兰树轮10年尺度的气候变化及其与中国其它地区温度代用资料的比较 |
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| 引用本文： | 杨保,康兴成,施雅风.近2000年都兰树轮10年尺度的气候变化及其与中国其它地区温度代用资料的比较[J].地理科学,2000,20(5):397-402. |
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| 作者姓名： | 杨保 康兴成 施雅风 |
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| 作者单位： | 中国科学院寒区旱区与环境工程研究所，甘肃 兰州 730000 |
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| 基金项目： | 中国科学院“九五”重大项目! (KZ95 1-A1-2 0 4-0 2，KZ95 1-A1-4 0 2 -0 3)资助 |
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| 摘 要： | 据高分辨率的青海都兰树轮年表 ,将过去 2 0 0 0年的气候变化划分为 2 30’S以前的高温期 ,2 40’S～ 80 0’S冷暖波动强烈的低温期 ,810’S～ 10 70’S显著高温期 ,即中世纪暖期 ,10 80’S～ 1880’S的低温期 ,其中包括 142 0’S～1870’S的小冰期 ,以及 1890’S后的升温期。统计发现 11次极端高温或低温事件 ,以及几次大的突变事件全部出现于中世纪之前 ,指示 15 0’S～ 110 0’S期间气候运行的高度不稳定性。和中国东部、古里雅冰芯和青藏高原南部温度代用资料比较后发现 ,公元初至 3世纪前期的东汉暖期 ,3世纪后期至 7世纪初的魏晋南北朝冷期 (期间约380’S～ 46 0’S暖 ) ,中世纪暖期以及小冰期等几次重大的气候事件在中国东部、都兰和青藏高原南部序列中均存在。古里雅冰芯仅记录了前两次重要事件 ,中世纪暖期以及小冰期在该序列中表现微弱。 2 0世纪的升温在古里雅冰芯最显著 ,都兰、中国东部次之 ,而高原南部似乎不明显。
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| 关 键 词： | 青海都兰年表 近2000年 中国东部古里雅冰芯 |
| 文章编号： | 1000-0690(2000)05-0397-06 |
| 修稿时间： | 1999年9月13日 |
Decadal Climatic Variations Indicated by Dulan Tree- Ring and the Comparison with Temperature Proxy Data from Other Regions of China during the Last 2000 Years |
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| Yang Bao,KANG Xing-cheng,SHI Ya-feng.Decadal Climatic Variations Indicated by Dulan Tree- Ring and the Comparison with Temperature Proxy Data from Other Regions of China during the Last 2000 Years[J].Scientia Geographica Sinica,2000,20(5):397-402. |
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| Authors: | Yang Bao KANG Xing-cheng SHI Ya-feng |
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| Abstract: | Based on hig-resolution tree-ring data from Dulan area of Qinghai Province, five spells have been di-vided: the warm period before 230' s A.D., the cold period between 240' s A.D. and 800' s A.D., the signifi-cantly warm period between 810's A.D. and 1070's, i.e. "Medieval Warm Period ", the cold period includingthe" Little Ice Age "1420 's- 1870's and the warming period since 1880 's. All the eleven coldest or warmestdecades and several great abrupt changes took place before the Middle Ages, indicating that climatic system op-erated in great instability during the period 150' - 1100's A.D.. Comparison of the tree-ring data with other
temperature proxy data from East China, Guliya ice core as well as the south of Qinghai-Tibet Plateau showsthat such great climatic events as Eastern Han warm period between the beginning of the 1st century and theprevious fifty years of the third century, the cold period covering the span of Wei, Jin and the Southern andNorthern Dynasties, the well-known" Medieval Warm Period" as well as the "Little Ice Age" appeared in suchseries as East China and Dulan area. Only the first two climatic events were recorded conspicuously in Guliya icecore while the "Medieval Warm Period" and "Little Ice Age" is far weaker. Also, the well-defined "MedievalWarm Period" didn't occur in the south of Qinghai-Tibet Plateau. The warming since the 20th century is thewarmest in the last 200 years in Guliya ice core, the second in Dulan area and East China, but it scarcely seemspronounced in the eastern part of Qinghai-Tibet Platea |
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| Keywords: | Chronology of Qinghai Dulan area The last two millennia East China Guliya ice core |
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