Millennial temperature reconstruction based on tree-ring widths of Qilian juniper from Wulan,Qinghai Province,China

作     者：ZHU HaiFeng ZHENG YongHong SHAO XueMei LIU XiaoHong XU Yan LIANG ErYuan 

作者机构：Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing 100085 China State Key Laboratory of Cryospheric Sciences Cold and Arid Regions Environment and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China Graduate School of the Chinese Academy of Sciences Beijing 100049 China 

出 版 物：《Chinese Science Bulletin》 (中国科学通报)

年 卷 期：2008年第53卷第24期

页      面：3914-3920页

核心收录：

学科分类：0710[理学-生物学] 071001[理学-植物学] 0709[理学-地质学] 081803[工学-地质工程] 07[理学] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：Supported by National Basic Research Program of China (Grant No. 2005 CB422002) National Natural Science Foundation of China (Grant Nos. 40671194 and 40371118) the Knowledge Innovation Program of Institute of Geographic Sciences and Natural Resources Research (Grant No.CXIOG-A05-12) 

主　　题：西藏高原 盆地 桧属植物 年轮 温度记录 

摘      要：The climate of the past 1000 years is an important context for evaluating the recent climate ***,there are few 1000-year-long climate reconstructions with annual resolution in the Qing-hai-Tibet *** this paper,a dendroclimatic analysis was conducted for the radial growth of Qilian juniper from the upper forest limit in Wulan,Qinghai *** results of correlation analysis between the tree-ring widths and the climate variables indicate that the growth of junipers at the upper forest limit is mainly limited by low temperatures of September,November and February of the pregrowth season,and July of the current growth *** is no significant correlation between the tree-ring widths and precipitation.A mean temperature from the previous year s September to the current year s April was reconstructed for the Wulan area since *** reconstruction can explain 40.8% of the instrumental variance in the calibration period(1856―2002).The reconstruction shows that the 20th century is the warmest 100 years,and the 1990s is the warmest decade during the past 1000 years,while the coldest 100 years and decade occur at 1600―1699 and 1642―1651,*** variations are verified well by the temperature reconstruction of the middle Qilian Mountain(QL) and the total organic carbon(TOC) in the Qinghai Lake *** comparison of our reconstruction with the annual temperature reconstruction of extra-tropical Northern Hemisphere suggests that the climate of Wulan during the Medieval Warm Period is of obvious regional specialty,but there was a good response to the climate of hemispheric scales during the recent 400 years.