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利用树轮资料重建天山中段南坡巩乃斯地区公元1777年来平均最高气温变化~
TREE RING BASED MEAN MAXIMUM TEMPERATURE RECONSTRUCTION FOR THE GONGNAISI REGION ON THE SOUTHERN SLOPE OF THE CENTRAL TIEN SHAN MOUNTAINS, CHINA SINCE A. D. 1777

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张同文 1   刘禹 2 *   袁玉江 3 *   魏文寿 3   喻树龙 3   陈峰 3  
文摘 利用年轮平均灰度年表重建了天山巩乃斯地区自公元1777年来当年5月至8月平均最高气温，方差解释量达41%（调整自由度后为39%）。过去232年来，巩乃斯地区平均最高气温变化存在2个偏冷阶段和1个偏暖阶段。重建序列具有154年、77年、2.7年和2.3年的准周期，并且在1842年前后、1880年前后、1923年前后发生了突变。与北半球平均最高气温网格点资料和多种涛动指数的相关性分析表明，巩乃斯地区平均最高气温变化不仅反映了区域气候变化，对于大范围气候变化也存在一定程度上的响应。
其他语种文摘 The Gongnaisi region is located on the southern slope of the Central Tien Shan Mountains in Xinjiang Province. In recent years, there are some dendroclimatological studies in this region, which were focused on the analyses of correlations of chronologies with meteorological data and the precipitation reconstruction. However, the temperature variation history of the region remains unclear. Healthy spruce (Picea schrenkiana) trees grow in sparse ground vegetation. Spruce trees with little or no apparent evidence of human or other disturbances were selected for sampling. Two cores (5. 15mm diameter) were extracted from each tree in different directions for cross-dating. A total of 62 cores from 31 spruce trees were collected from AKS sampling site (2420~2482m a. s. 1.,43°12'12. 8" N and 84°47'47.7" E) in May 2009, which is located in a mountainous area of the Aikendaban region. All of tree-ring samples were dried, mounted, surfaced and cross-dated following standard dendrochronological procedure. Three kinds of tree-ring width data(TRW, EWW and LWW) and five kinds of tree-ring gray values(TRG, EWG, LWG, MXG and MIG) were obtained through a treering image analysis system(WINDENDRO~(TM) 2005a), which includes a high resolution scanner, a PC computer and a software program. The quality control of cross-dating was carried out using COFECHA and ARSTAN program was used for de-trending. After all the processes, we obtained three kinds of chronologies(STD, RES and ARS) of treering width data and gray values. Based on the tree-ring data analysis, mean maximum temperature from May to August of the Gongnaisi region from 1777 to 2008A. D. has been reconstructed by the tree-ring average gray values. For the calibrated period (1958~2008 A. D.), the predictor variable accounts for 39% of the variance of mean maximum temperature data. The mean maximum temperature reconstruction shows that there are 34 warm years and 38 cold years. The warm events (lasting for more than three years) were 1861~1864A. D., 1873~1876A. D. and 1917~1919A. D.; and the cold events were 1816~1818A. D., 1948~1950A. D. and 1957~1959A. D. Furthermore, these years and events correspond well with historical documents. By applying a 11-year moving average to our reconstruction, only one period with above average reconstructed mean maximum temperature (1777~2008A. D.) comprise 1845~1925A. D.; the two periods below average consist of 1788~1844A. D. and 1926~2001 A. D. The reconstructed mean maximum temperature has increased since the 1990s and agreed well with instrumental measurements in the North Western China in the recent 50 years. The power spectrum analysis shows that there are 154-,77-,2. 7- and 2. 3-years cycles in our reconstruction, which may be associated with solar activity and quasi-biennial oscillation (QBO). The moving t-test indicates that the significant abrupt changes were presented in about 1842A. D., 1880A. D. and 1923A. D. The significant correlations between our reconstruction and the gridded dataset of the Northern Hemisphere and three kinds of index (SOI, APOI, and AOI) may imply that mean maximum temperature of the Gongnaisi region is possibly influenced not only by local,but also by multiple large-scale climate changes to some extent.
来源 第四纪研究 ,2011,31(6):1011-1021 【核心库】
关键词 天山 ; 雪岭云杉 ; 树轮灰度 ; 平均最高气温
地址

1. 中国科学院地球环境研究所, 黄土与第四纪地质国家重点实验室;;树木年轮理化研究重点开放实验室;;新疆树木年轮生态实验室, 西安, 710075  

2. 中国科学院地球环境研究所, 黄土与第四纪地质国家重点实验室, 西安, 710075  

3. 中国气象局乌鲁木齐沙漠气象研究所, 树木年轮理化研究重点开放实验室;;新疆树木年轮生态实验室, 乌鲁木齐, 830002

语种 中文
ISSN 1001-7410
学科 大气科学(气象学);地质学
基金 中国沙漠气象科学研究基金 ;  新疆自治区重点实验 室开放课题共同资助 ;  新疆气象局科学技术研究与应用技术开发项目 ;  中国科学院寒区旱区环境与工程研究所冰冻圈科学国家重点实验室基金 ;  国家自然科学基金 ;  中央级公益性科研院所基本科研业务专项基金 ;  科技部科 技基础性工作专项项目 ;  国家自然科学基金项目 ;  公益性行业（气象）科研专项
文献收藏号 CSCD:4358677

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