用西伯利亚落叶松年轮最大密度重建和布克赛尔5—8月份平均最高温度

利用采自和布克塞尔铁布克山二号沟的西伯利亚落叶松树轮样本,研制出树轮最大密度年表(MXD)和年轮宽度年表(TRW),分析了其年表特征和气候响应特点。结果表明,该样点的落叶松树轮最大密度年表与和布克塞尔气象站5-8月份平均温度和平均最高温度度均具有很好的正相关关系,最高单相关系数为0.660。用铁布克山二号沟的最大密度差值年表序列,可较好地重建和布克塞尔地区1795-2007年来春夏季平均最高温度距平,47 a重建值对实测值的解释方差达43.5%,且方程稳定。重建结果揭示,在和布克赛尔地区,20世纪平均最高温度距平要高于20世纪以前的平均最高温度距平,20世纪前中期平均最高温度距平出现了明显的上升,并且在重建的时段的末期,5-8月份平均最高温度距平表现出上升趋势。

Dendroclimatic reconstruction of mean maximum may-august temperature from the maximum density of the Larix sibirica in Hoboksar,China

Using tree rings of Larix sibirica sampling from Hoboksar,we developped 21 tree-ring density and 63 tree-ring width series and then established maximum density(MXD) and annual ring width(TRW) chronologies.The detrending method of the regional curve standardization allowed us to be able to preserve inter-annual to multi-centennial scale variabilities.Having analyzed the characteristics of the chronologies and thier responding to climate factors,we found the MXD chronology correlates at 0.66 with the anomaly ...