Tree-ring-based May-July mean temperature history for Lüliang Mountains,China,since 1836  

作　　者：CAI QiuFang LIU Yu BAO Guang LEI Ying SUN Bo 

机构地区：[1]The State Key Laboratory of Loess and Quaternary Geology, the Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China [2]Department of Environment Scienee and Technology, School of Human Settlements and Civil Engineering of Xi'an Jiaotong University, Xi'an 710049, China [3]Graduate University of the Chinese Academy of Sciences, Beijing 100049, China

出　　处：《Chinese Science Bulletin》2010年第26期3008-3014,共7页

基　　金：supported by the National Natural Science Foundation of China (40701196, 40890051, 40525004 and 40599423);the West Light Foundation of the Chinese Academy of Sciences,the Special Foundation of President of the Chinese Academy of Sciences

摘　　要：As a consequence of recent global warming and its social impact, regional climate change is attracting an increasing amount of attention from scientists. A May-July temperature proxy extending back to 1836 was developed from tree-ring width of Chinese pine (Pinus tabulaeformis Carr.) found in the middle Lüliang Mountains, northern China. Correlations with climatic data from six nearby meteorological stations range from -0.58 to -0.65, indicating a strong response of tree-ring index to May-July mean temperatures, which were subsequently reconstructed. The reconstruction captures 45% (F=38.474, P<0.001) of the regional variance in the instrumental data over the calibration period 1955-2003. Reconstructed warm and cold periods were verified by additional temperature reconstructions based on tree-ring data from northern China. In addition, the reconstruction was significantly corre-lated with May-July mean temperatures from 13 other meteorological stations in northern China, suggesting that our reconstruction is also representative of north-central China. The warming trend during the second half of the 20th century is seen in the reconstruction, but only the 1994-2002 mean temperature seems unprecedented over the whole reconstructed period.As a consequence of recent global warming and its social impact, regional climate change is attracting an increasing amount of attention from scientists. A May-July temperature proxy extending back to 1836 was developed from tree-ring width of Chinese pine （Pinus tabulaeformis Carr.） found in the middle Ltiliang Mountains, northern China. Correlations with climatic data from six nearby meteorological stations range from -0.58 to -0.65, indicating a strong response of tree-ring index to May-July mean temperatures, which were subsequently reconstructed, The reconstruction captures 45% （F=38.474, P〈0.001） of the regional variance in the instrumental data over the calibration period 1955-2003. Reconstructed warm and cold periods were verified by additional temperature reconstructions based on tree-ring data from northern China. In addition, the reconstruction was significantly correlated with May-July mean temperatures from 13 other meteorological stations in northern China, suggesting that our reconstruction is also representative of north-central China. The warming trend during the second half of the 20th century is seen in the reconstruction, but only the 1994-2002 mean temperature seems unprecedented over the whole reconstructed period.

关 键 词：月平均气温 中国 树轮 历史 区域气候变化 树木年轮 气象观测站 年平均气温 

分 类 号：P457.3[天文地球—大气科学及气象学] P532