Droughts and broad-scale climate variability reflected by temperature-sensitive tree growth in the Qinling Mountains, central China
Droughts and broad-scale climate variability reflected by temperature-sensitive tree growth in the Qinling Mountains, central China
复制标题
中国中部秦岭地区温度敏感树木生长反映的干旱和大范围气候变化
DOI：
10.1007/s00484-012-0544-8
复制
发表时间：
2013-01-01
影响因子：
3.2
通讯作者：
Bao, Guang
中科院分区：
文献类型：
--
作者：
Liu, Na;Liu, Yu;Bao, Guang
利用中国中部秦岭太白红杉（Larix chinensis Beissn）对温度敏感的生长情况，对温度和干旱之间的关系进行了研究。在1814年至1956年（仪器测量短缺之前），极高的树木年轮宽度指数（TRWI）值与根据中国历史文献和气候相关论文中的数据所获得的干湿指数（DWI）所定义的干旱条件高度吻合；极低的TRWI值则情况相反。主要的严重干旱时期发生在19世纪50年代末至70年代、20世纪20年代至30年代以及21世纪初，而湿润期则出现在1817 - 1827年和1881 - 1886年。21世纪初的干旱与20世纪20年代至30年代的干旱呈现出相似的模式，且温度明显升高。树木生长的变化与来自附近及偏远地区的其他重建温度序列高度吻合，这表明太白红杉能够对大尺度的气候变化做出响应。最长的寒冷期（1817 - 1827年）可能与1815年坦博拉火山爆发的影响有关。
The relationship between temperature and drought was investigated using the temperature-sensitive growth of Larix chinensis Beissn in the Qinling Mountains, central China. Extremely high tree-ring width index values (TRWI) agreed well with dry conditions defined by the dryness-wetness index (DWI) obtained from data in Chinese historical documents and climate-related papers between 1814 and 1956 (before the short of instrumental measurements); the reverse applied to extremely low TRWI values. The main severe drought epochs occurred from the late 1850s to the 1870s, the 1920s to 1930s and in the 2000s, whereas wet spells occurred from 1817-1827 and 1881-1886. The droughts in the 2000s exhibited a similar pattern as the ones from the 1920s to 1930s, with obviously an increasing temperature. The variation of tree growth agreed well with other reconstructed temperature series from nearby and remote regions, suggesting that Larix chinensis could respond to broad-scale climate variability. The longest cold interval, 1817-1827, could be associated with the influence of the Tambora eruption in 1815.