内蒙古东北部莫尔道嘎地区树轮年表的建立

The tree-ring chronologies from Moerdaoga in the northeast of Inner Mongolia

通过对比内蒙古东北部2个标准化树轮年表的多项特征参数,表明安格林林场年表包含的气候信息可能多于新青林场年表。将2个标准化树轮年表与当地气象资料进行单相关普查,结果发现这2个采点树木的生长主要受到上一年秋冬季降水以及当年春夏季降水的总量和上年秋冬季的最低气温共同制约。2个树轮年表的滞后一年年表与当年9月至下一年7月的降水量月和当年9月至当年12月最低气温呈正相关,其相关系数分别为0.497和0.571,其显著性水平均超过0.001。在0.05显著性水平上,安格林林场年表具有22 a的变化准周期。

In this paper, we compared some statistics results of the two tree - ring standardized chronologies of the northeast of Inner Mongolia from ARSTAN program. The results indicated that the Angelin forestry chronology contents more climatic information than what the Xinqing forestry chronology contents. Compared with me meteorological datasets of the Genhe weather station and the self - correlation coefficients of tree - ring standardized chronologies, we found that tree growth have a lag response to the meteorological factors. The correlation between the tree - ring width index （ t ＋ 1 ） and the meteorological datasets also showed that there are the positive correlation between tree -ring width index of the chronologies and precipitation from September in this year to July in the next year and minimum temperature from September to December. The maximum correlation coefficients are 0. 497 and 0.571 （a〈0. 001 ）. At the same time, an explanation of its physiology was presented. The fluctuations cycles of the tree - ring width index of the Angelin forestry chronology appeares the period of 22a and the Xinqing forestry chronology does not have a marked period.