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| 油松树轮记录的1776年以来贺兰山地区气温变化 | |
| 引用本文： | 蔡秋芳,刘禹.油松树轮记录的1776年以来贺兰山地区气温变化[J].地理学报,2006,61(9):929-936. |
| 作者姓名： | 蔡秋芳 刘禹 |
| 作者单位： | 1. 中国科学院地球环境研究所,黄土与第四纪地质国家重点实验室,西安,710075;中国科学院研究生院,北京,100039 2. 中国科学院地球环境研究所,黄土与第四纪地质国家重点实验室,西安,710075;西安交通大学能源与动力工程学院环境工程系,西安,710075 |
| 摘 要： | 利用贺兰山东西坡78个油松树芯样本建立了标准年表,分析发现1～8月平均气温是树木宽度生长的重要限制因子之一,且有明确的树木生理学意义.在此基础上模拟重建了贺兰山地区1776～1999年1～8月平均气温,重建序列的解释方差为43.3%（F=21.422,p＜0.001）.重建中相对高温的年份有：1805～1818,1828～1857,1899～1907,1919～1931,1968～1995;相对低温的时段为：1858～1872,1883～1895,1935～1953.重建气温10年滑动曲线表现出3个明显的气温缓慢上升阶段（1766～1853,1862～1931,1944～1995）,每个升温期之后随之而来的是10年左右的快速降温,即贺兰山1～8月气温有缓慢升温而后又快速降温的特点.功率谱分析表明1-8月气温存在70、10.77、2.62、2.19、2.11年的准周期. |
| 关 键 词： | 贺兰山 树轮宽度 气温重建 |
| 收稿时间： | 3/6/2006 12:00:00 AM |
| 修稿时间： | 2006-06-20 |
Temperature Variability since 1776 Inferred from Tree-rings of Pinus tabulaeformis in Mt. Helan |
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| CAI Qiufang,LIU Yu.Temperature Variability since 1776 Inferred from Tree-rings of Pinus tabulaeformis in Mt. Helan[J].Acta Geographica Sinica,2006,61(9):929-936. | |
| Authors: | CAI Qiufang LIU Yu |
| Institution: | 1. State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS, Xi'an 710075, China; 2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China; 3. Department of Environment Engineering, School of Energy and Power Engineering of Xi'an Jiaotong University, Xi'an 710075, China |
| Abstract: | Tree-ring standardized chronologies are developed with 78 cores obtained from eastern and western Mt.Helan.Both STD and RES chronologies correlate negatively with the different periods of early half year temperature,especially January to July(August)(JJ/JA) temperature.It has evident physiological meaning that wide rings were formed when JJ(JA) temperature was low and narrow rings were formed when JJ(JA) temperature was high.Based on this analysis,we reconstructed mean temperature from January to August in the period 1776-1999,and the explained variance is 43.3%(F = 21.422,p < 0.001).The comparatively high temperature periods in reconstruction are 1805-1818,1828-1857,1899-1907,1919-1931,and 1968-1995;and the comparatively low temperature periods are 1858-1872,1883-1895,and 1935-1953.Ten year moving average curve presents three slow uplifting periods of 1766-1853,1862-1931,and 1944-1995.Each temperature increase was followed by a sudden temperature decrease of about ten years,that is to say,the JA temperature has the character of slow increase and sudden decrease.The 70-and 10.77-year periodicities detected in the tree-ring growth series correspond respectively to the Gleissberg(80a) and Schwabe(11a) periodicity of solar activity,and the 2.11-2.62 year cycles are considered to be influenced by QBO(Quasi-Biennial-Oscillation) and the local environmental change. |
| Keywords: | Mt Helan tree-ring width temperature reconstruction |
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