天山南坡巴仑台地区树轮年表特征分析

通过对巴仑台地区2个标准树轮年表的有关参数的对比,证明夫斯坦沟年表比萨色克沟年表包含了更多的气候信息。将这2个标准树轮年表与附近的巴仑台气象站1961-2005年月平均降水资料进行相关分析,结果表明,夫斯坦沟年表的年轮指数与巴仑台地区上年7月至当年6月的降水呈显著正相关,而萨色克沟年表则与上年6月至上年8月的降水呈显著正相关,且二者的正相关具有明确的树木生理学意义。研究还发现,在0．05的显著性水平上,夫斯坦沟年表树轮指数变化具有48．67 a、17．18 a和2．07 a-2．39 a的变化准周期,萨色克沟年表则具有14．6 a、13．27- 13．9 a、12．7 a和2．09-2．16 a的变化准周期。夫斯坦沟年表的高频信息含量高于萨色克沟年表,而其低频信息含量则低于萨色克沟年表。

Tree-ring chronological characteristics at Baluntai on the south slope of the Tianshan Mountains

In this paper,comparing with some parameters of the tow standardized chronologies of the area of Balun- tai,the results indicated that the Fusitan Gully chronology contents more climatic information than the Saseke Gully chronology.The correlation between the tree-ring width index and the precipitation of Baluntai station showed that there is positive correlation between tree-ring width index of the Fusitan chronology and precipitation from July in the prior growing season to current June,and between tree-ring width index of the Saseke chronology and precipita- tion from June to August.The correlation coefficients are 0.664 and 0.504.The fluctuations cycles of the tree-ring width index of the Fusitan chronology appeared the periods of 48.67 a,17.18 a and 2.07 -2.39 a,and the tree- ring width index of the Saseke chronology showed the periods of 14.6 a,13.27-13.9 a,12.7a and 2.09 -2.16 a.The high-frequency vibration of the Fusitan chronology is stronger than that in the Saseke chronology,and the low-frequency vibration of the Fusitan chronology is weaker than that in the Saseke chronology.