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Tree-ring-based reconstruction of the April to September mean temperature since 1826 AD for north-central Shaanxi Province,China

查看全文 作　　者：CAI [1]QiuFang;LIU [1,2]Yu;SONG [1]HuiMing;SUN [1]JunYan 高影响力作者 机构地区：[1]The State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment,Chinese Academy of Sciences,Xi’an 710075,China;[2]School of Human Settlements and Civil Engineering of Xi’an Jiaotong University,Xi’an 710049,China高影响力机构 出　　处：《Science China Earth Sciences》索引2008年第51卷第8期,共8页高影响力期刊 基　　金：the National Natural Science Foundation of China (Grant Nos. 40525004, 40701196 and 40599423);the Ministry of Science and Technology of China (Grant No. 2004CB720200);the foundation of the State Key Laboratory of Loess and Quaternary Geology (Grant Nos. SKLLQG0214, SKLLQG0516) 摘　　要：Long-time series of high-resolution temperature record from Chinese Loess Plateau is rare. An April-September mean temperature reconstruction (1826-2004) has been developed for the north-central Shaanxi Province, China, based on tree-ring width analysis. The reconstruction captures 39.3% (p<0.001) of the variance in the instrumental data over the calibration period from 1951 to 2002. The reconstruction shows a high temperature period of 1928-1933, which coincides with the timing of the extreme drought event in 1920s in the entire northern China. The two low temperature periods in reconstruction are 1883-1888 and 1938-1942. With the global warming, the April-September mean temperature in study area has also increased since the 1970s, but has not exceeded the temperature in 1928-1933. Besides the statistical analysis, the reconstruction is also verified by the local dryness/wetness index and other dendroclimatological results. 关 键 词：Huanglong Mountain SHAANXI PINUS tabulaeformis TREE-RING width April-September mean TEMPERATURE
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