| 北极巴罗地区13世纪以来花粉记录的气候变迁及其与青藏高原的比较 |
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| 引用本文： | 唐领余,张青松,夏威岚,潘洪玺,童国榜,张小平,周忠泽,王国.北极巴罗地区13世纪以来花粉记录的气候变迁及其与青藏高原的比较[J].冰川冻土,2003,25(3):261-267. |
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| 作者姓名： | 唐领余 张青松 夏威岚 潘洪玺 童国榜 张小平 周忠泽 王国 |
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| 作者单位： | 1. 中国科学院, 寒区旱区环境与工程研究所冰芯与寒区环境重点实验室, 甘肃, 兰州, 73000;2. 中国科学院, 南京地质古生物研究所, 江苏, 南京, 210008;3. 中国科学院, 地理与资源科学研究所, 北京, 100101;4. 中国科学院, 南京地理与湖泊研究所, 江苏, 南京, 210008;5. 国土资源部, 水文工程地质研究所, 河北, 正定, 050803;6. 安徽师范大学, 安徽, 芜湖, 241000;7. 安徽大学, 生命科学学院, 安徽, 合肥, 230000 |
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| 基金项目： | 中国科学院重点实验室基金;BX2001-01; |
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| 摘 要： | 北极阿拉斯加巴罗(Barrow)地区(70°21′N,156°40′W)位于北极滨海平原最北端,根据湖泊钻孔花粉记录,210Pb和137Se测定以及多项环境代用指标测试(有机质含量、总C和总N含量、CaCo3),并结合当地现代冻原植被、表层花粉谱、当地70a的气象记录以及有关的冰芯、树龄等资料的综合对比研究,分析了13世纪以来巴罗地区气候和环境变化历史.大约在13世纪以前,巴罗地区植被稀少,气候寒冷,其后冻原植被发育良好,并经历几次演变.结合沉积地球化学元素测试结果和其他环境代用资料研究表明,小冰期以来Barrow地区曾发生3次暖期(公元1540—1600年,1660—1730年和1880—1992)和3次冷期(公元1440—1520年,1610—1650年和1750—1850年).这些冷暖事件与青藏高原冰芯记录对比发现,虽然在高频变化上,不同地区存在着差异,但重大冷暖事件都曾出现.其中3次暖期与青藏高原古里雅冰芯和敦德冰帽中代表温度变化的δ18O值指示的暖期基本一致,证实巴罗湖芯记录的环境变化序列是可靠的.同时,古里雅和敦德冰芯记录中反映传统小冰期中的15,17,和19世纪的3次冷期,在巴罗湖芯记录中都有显示.
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| 关 键 词： | 花粉记录 冷暖事件 环境变化 北极巴罗地区 |
| 文章编号： | 1000-0240(2003)03-0261-07 |
| 收稿时间： | 2002-09-12 |
| 修稿时间： | 2002年9月12日 |
Study on Climate Change in Pollen Records in Barrow, Arctic, and Compared with the Tibetan Plateau since 13th Century |
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| TANG Ling-yu ,\ ZHANG Qing-song ,\ XIA Wei-lan ,\ PAN Hong-xi ,\ TONG Guo-bang ,ZHANG Xiao-ping ,\ ZHOU Zhong-ze ,\ WANG Guo.Study on Climate Change in Pollen Records in Barrow, Arctic, and Compared with the Tibetan Plateau since 13th Century[J].Journal of Glaciology and Geocryology,2003,25(3):261-267. |
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| Authors: | TANG Ling-yu \ ZHANG Qing-song \ XIA Wei-lan \ PAN Hong-xi \ TONG Guo-bang ZHANG Xiao-ping \ ZHOU Zhong-ze \ WANG Guo |
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| Institution: | TANG Ling-yu 1,2,\ ZHANG Qing-song 3,\ XIA Wei-lan 4,\ PAN Hong-xi 4,\ TONG Guo-bang 5,ZHANG Xiao-ping 6,\ ZHOU Zhong-ze 7,\ WANG Guo 3 |
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| Abstract: | Barrow is located in the northeast of Alaskan coastal plain(71°20′ N, 156°40′ W), which is encircled by the Chukchi Sea in the west and the Beaufort Sea in the north. Barrow is a quite cold area with the mean annual temperature of-12.4 ℃, the mean temperature of-29 ℃ in winter and 20℃ in summer. Mean annual precipitation is less than 250 mm. For understanding the climatic and environmental changes in Barrow, 9 lake cores, 100～350 cm in depth, were taken by piston corer in this area. Based upon the analyses and measurements of 210Pb, 137Cs, TOC, TN, organic materials, CaCO3, grain size and pollen of Core 98-4B, climatic and environmental records since 13th century in Barrow were reconstructed. It is found that in the past 700 a, there were four main warm periods in 1240～1425, 1535～1600, 1720～1730 and 1880～1992, and three cold periods in 1440～1520, 1605～1650 and 1750～1850. Comparative study shows that the Barrow lake core record is compatible with three main cold-warm conditions since the Little Ice Age deduced from the Guliya and Dunde ice cores and the tree ring record in the Qilian Mountains, although there exist some differences in high frequent climatic change. |
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| Keywords: | pollen records cold-warm events climatic and environmental changes Barrow in Alaskan Arctic |
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