| 天目山柳杉树轮δ13C对华东地区降水序列的重建 |
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| 引用本文： | 吕军,屠其璞,钱君龙.天目山柳杉树轮δ13C对华东地区降水序列的重建[J].大气科学学报,2001,24(3):350-355. |
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| 作者姓名： | 吕军 屠其璞 钱君龙 |
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| 作者单位： | 南京气象学院环境科学系, 南京, 210044;南京气象学院环境科学系, 南京, 210044;中国科学院南京地理与湖泊研究所, 南京, 210008 |
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| 基金项目： | 国家自然科学基金项目49771001 |
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| 摘 要： | 对采自天目山的柳杉树轮进行交叉定年后,得到树轮的δ13C年序列。将δ13C年序列去除大气CO2的影响,保留其高频振荡部分。利用华东地区部分气象站的降水资料,通过主成份分析,分析了降水与树轮δ13C之间的关系。考虑滞后效应,利用回归方法重建了过去一百多年来的华东地区不同时段的降水序列,并分析其变化特征。
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| 关 键 词： | 天目山 树木年轮 δ 13C 降水 |
| 收稿时间： | 2000/5/30 0:00:00 |
| 修稿时间： | 2001/4/23 0:00:00 |
RECONSTRUCTION OF PRECIPITATION SERIERS IN EAST CHINA BY δ13C OF TREE RINGS |
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| Affiliation: | Department of Environmental Sciences, NIM, Nanjing, 210044;Department of Environmental Sciences, NIM, Nanjing, 210044;Nanjing Institute of Geography and Lake, The Chinese Academy of Sciences, Nanjing, 210008 |
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| Abstract: | The δ13C time series obtained from trees in the Tianmu Mountains of Zhejiang Province contain high frequency variations and a long term decrease trend .By removing the long term decrease trend related to the δ13C variation with atmospheric CO2,it is found that the high frequency variation is determined by the precipitation.Relation between the precipitation and the δ13C is analysed using PCA in terms of precipitation data in east China.The multiple regression method is employed to reconstruct the historical precipitation in east China,with a view to analyze the climatic change of centuries and evolution trend. |
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| Keywords: | Tianmu Mountains tree rings δ 13C precipitation |
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