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• 中国科学引文数据库源刊
• CN 62-1072/P
• ISSN 1000-0240
• 创刊于1979年
• 主管单位：中国科学院
• 主办单位：中国科学院寒区旱区
•                  环境与工程研究所
•                  中国地理学会

• 研究论文 •

### 天山博格达峰地区树木年轮与近期的气候变化

1. 中国科学院兰州冰川冻土研究所
• 出版日期:1984-11-25 发布日期:2012-04-26

### Tree Ring and Recent Climatic Variations in the Region of Bogda, Tian Shan

Kang Xingcheng, Zhang Zhenshuan, Zheng Benxing

1. Lanzhou Institute of Glaciology and Cryopedology, Academia Sinica
• Online:1984-11-25 Published:2012-04-26

Abstract: This paper discussed the relation of climatic elements to the tree ring using the tree ring data for 147 years in the Bogda area, Tian Shan. After analysis of the climatic variations in the last 150 years, the authors found that there were three dry and wet periods i.e. the three wets in 1841-1854, 1869-1877, 1905-1941 and the three drys in 1855-1868, 1878-1904 and 1942-up to present. Further detailed analysis reveals that the climate tended to be drier and drier in the past 150 years and reached the climax in 70 s and turns to wet in early 80 s. Moreover, the duration of dry spells is becoming longer and longer (the first dry spell lasted 13 years, the second 24 years and the third 34 years) . The wettest period happened in the first half of this century, and the driest in the 70 s.Because this result agrees fundamently with that of the surrounding regions, we deduce that since the little ice age, there might be four dry and wet spells of climatic variations in this region. The earliest one might happen near the end of 17th century up to beginning of 18th century.