Tree-ring based winter temperature reconstruction for the lower reaches of the Yangtze River in southeast China.
Tree-ring based winter temperature reconstruction for the lower reaches of the Yangtze River in southeast China.
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DOI：
10.3354/cr00851
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发表时间：
2010-04
期刊：
影响因子：
1.1
通讯作者：
Jiangfeng Shi;E. Cook;Huayu Lu;Jinbao Li;W. Wright;Shengfeng Li
中科院分区：
文献类型：
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作者：
Jiangfeng Shi;E. Cook;Huayu Lu;Jinbao Li;W. Wright;Shengfeng Li
在中国东南部的天目山西部和仙毓山地区建立了两套可靠的树木年轮宽度年表。这两个年代学相互之间具有显著的相关性，并进行算术平均以建立区域年代学（RC）。在生长季前，RC与冬季温度呈显著正相关。基于这种关系，利用RC年表重建了1852年至2006年12月至今年3月的平均气温。温度重建与研究区以西720 km的东秦岭地区冬季半年温度显著相关，表明冬季温度变化具有大尺度的一致性。重建结果与极端年东亚冬季风（EAWM）指数吻合较好，反映了东亚冬季风对研究区域的强烈影响。因此，利用年轮年表重建中国东南地区过去的气候变化具有很大的潜力，而迄今为止，东南地区的树木气候学研究很少。
Two robust tree-ring width chronologies were developed for the western Tianmu Moun- tains and the Xianyu Mountains of southeast China. Both chronologies were significantly correlated with each other and were arithmetically averaged to build a regional chronology (RC). The RC had significant and positive correlations with winter temperature before the growing season. Based on this relationship, the average temperatures of the previous December to the current March were reconstructed using the RC chronology for the period 1852 to 2006. The temperature reconstruction was significantly correlated with the winter half-year temperature in the eastern Qinling Mountains of central China, 720 km west of the study region, suggesting a large-scale coherence of winter tem- perature variability. The reconstruction corresponds well with an East Asian winter monsoon (EAWM) index in extreme years and reflects the strong influences of the EAWM in this study region. Thus, there is great potential to use tree-ring chronologies to reconstruct past climate change in southeast China, where little dendroclimatic work has been done until now.