%0 Journal Article
%T Reconstruction of temporal variations of precipitation in Changbai Mountains area over past 240 years by using tree-ring width data<br>利用树木年轮宽度资料重建长白山地区240年来降水量的变化
%A ZHANG Han-song
%A HAN Shi-jie
%A LI Yu-wen
%A ZHANG Jun-hui
%A <br>张寒松
%A 韩士杰
%A 李玉文
%A 张军辉
%J 生态学杂志
%D 2007
%I 
%X Based on the tree-ring width chronologies of Fraxinus mandshurica in Changbai Mountains area,the relationships between tree-ring width and climatic factors were analyzed,and the temporal variations of precipitation in this area since 1765 were reconstructed.The results showed that over past 240 years,the precipitation in Changbai Mountains area fluctuated evidently.The amplitude of the fluctuation was comparatively great before 1850,and relatively stable from 1850 to 1900,with a low level of precipitation.After 1900,the amplitude of the fluctuation increased significantly,and the durations of wetness and drought were extended.Especially after 1920,the precipitation fluctuated acutely,and several wet and drought periods could be clearly identified.The driest period with an evident decrease of precipitation appeared in 1816-1820,and the wettest period was in 1975-1979.The drought periods which appeared from 1925 to 1936 and from 1947 to 1957 were particularly notable for their durations.There were significant periodical variations of precipitation in the Changbai Mountains area,and the periodicities were 2.64-3.03 years,5.28-6.96 years,and 12.13-22.63 years,respectively.
%K tree-ring
%K Fraxinus mandshurica
%K Changbai Mountains
%K precipitation reconstruction<br>树木年轮
%K 水曲柳
%K 长白山
%K 降水重建
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=B04840A985D251F36078BD07A90EF003&aid=3C9AF1BA5365A7CC90F8B130CBACD193&yid=A732AF04DDA03BB3&vid=96C778EE049EE47D&iid=59906B3B2830C2C5&sid=FEE377A727789A99&eid=1B889749E306CF0E&journal_id=1000-4890&journal_name=生态学杂志&referenced_num=0&reference_num=33