摘要
利用阿尔泰山中部地区3个采样点的树轮宽度资料,建立年表,对比3个树轮宽度标准化年表(STD)相关特征参数及年表与气候的响应,结果表明:大东沟(DDG)年表和二道房子(EDF)年表的平均敏感度和信噪比等参数均较大,表明2个年表含有较丰富的气候信息。2个年表的显著性水平达到0.01的自相关大多在4阶以内,表明气候对阿尔泰山中部树轮宽度生长的影响主要表现在当年及其后的3 a,其"滞后效应"较明显。位于阿尔泰山中部森林中下部林缘的大东沟树轮宽度年表(DDG)与上年11月—当年4月的降水量有显著的正相关(r=0.503,p<0.001);而位于阿尔泰山中部森林上树线附近的哈依萨萨依树轮宽度年表(HYS)对当年6—7月的月平均最低气温有明显的正相关(r=0.462,p<0.001),但同时与当年1月的降水有很好的响应。
Through the use of data from 3 samples sites of tree-ring width in the central region ofMtay Mountains, the chronologies were established, comparing with the related parameters of threestandardized tree-ring width chronologies and the correlation between chronologies and climate. Theresult indicated that the parameters such as average mean sensitivity, signal-to-noise at DDG andEDF were large, which also meant these two chronologies contained abundant climate information.The significant level of 2 chronologies reached 0.01 autocorrelation mostly in the 4 order, showingthat the climate effect on the radial growth of trees in the central Ahay Mountains was mainlymanifested in that year and the following 3 years, and the ＂lag effect＂ was very obvious.Chronologies of DDG tree -ring width, which stood for the lower central forest edge of central MtayMountains, contained significant positive correlation with the precipitation from November to Aprilof that year （r=0.503,p〈0.01）; and the chronologies of HYS tree-ring width, which were near theupper limit of the central forest in Ahay Mountains, had the obvious positive correlation with theaverage minimum temperature in June and July （r=0.462,p〈0.01）, and they also had a positivecorrelation with the winter precipitation in January.
出处
《沙漠与绿洲气象》
2014年第3期19-26,共8页
Desert and Oasis Meteorology
基金
国家自然科学基金(41275120)
科技部气象行业专项(GYHY201206014
GYHY201106013)
国家自然科学基金(40975056)
科技支撑项目(2012BAC23B01)
国家重点基础研究发展计划项目(2010CB951001)
艾比湖流域水域面积与树轮的相关性研究(XJDX0909)共同资助
