树木年轮重建阿勒泰西部1481--2004年6-9月降水量序列  

June to September Precipitation Series of 1481-2004 Reconstructed from Tree-Ring in the Western Region of Altay Prefecture,Xinjiang

作　　者：张同文[1] 袁玉江[1] 喻树龙[1] 魏文寿[1] 杨青[1] 尚华明[1] 

机构地区：[1]中国气象局乌鲁木齐沙漠气象研究所

出　　处：《冰川冻土》2008年第4期659-667,共9页Journal of Glaciology and Geocryology

基　　金：国家自然科学基金项目(40475041);中国气象局项目“利用年轮气候与遥感技术监测新疆干旱区森林长势”;科技部科研院所社会公益研究专项(2004DIB3J1182005DIB6J113);中国气象局重点实验室开放研究项目“新疆天山北坡树木年轮气候研究”资助

摘　　要：根据采自阿勒泰西部地区5个采点的树木年轮样本，建立了该地区的树轮年表。通过相关普查发现，其差值年表序列与该地区当年6—9月的降水量存在明显的负相关关系，且具有明确的树木生理学意义。用沙勒哈（t，t＋1）两个树轮差值年表序列可较好地重建该地区1481--2004年524a来的当年6—9月的降水量，且经过交叉检验表明重建方程稳定可靠。分析发现，阿勒泰西部地区524a来的重建降水量序列具有9个偏干阶段和9个偏湿阶段，并且具有34.8a、5.0～5.1a、4.3～4.4a、3.9～4.0a、3.7a和3.4a的显著干湿变化准周期。重建降水量序列在1518年、1548年、1634年、1765年、1856年前后发生过突变。Abstract： Three kinds of chronologies were estab- lished according to the samples from west Altay Prefecture. The single correlation screen indicated that the correlation were significant between five tree-ring residual chronologies and the precipitation series from June to September, with a maximum correlation coefficient of --0. 556. This result has distinct physiological significance. Using five treering residual chronologies in Shaleha （t, t＋1）, the precipitation series in the recent 524 years was well reconstructed, and the equation reconstructed was stable by crossing-test. Analyzing the precipitation series found that in the recent 524 years of 1481-- 2004 the reconstructed precipitation series has nine wet periods and nine dry periods. The precipitation series from June to September in the recent 524 years reconstructed in the west Altay Prefecture have significant changing periods of 34.8 a, 5.0～5.1 a, 4.3～4.4 a, 3.9～4.0 a, 3.7 a and 3.4 a. The abrupt changes of precipitation occurred in 1518, 1548, 1634, 1765 and 1856.

关 键 词：树轮年表 重建降水量序列 干湿变化 阿勒泰西部 

分 类 号：P467[天文地球—大气科学及气象学]