中文摘要：

利用采自广西桂林三月岭湘桂古道的马尾松树轮样本,建立研究区的标准树轮宽度年表。树轮气候响应分析发现：马尾松径向生长与当年6—9月平均温度（r=.0.51,p〈0.01）和上年2—11月平均温度（r=.0.53,p〈0.01）显著负相关,与上年10月降水量显著正相关,与当年6月、7月、8月的平均相对湿度和帕尔默干旱指数（PDSI）显著正相关。说明生长季当年6—9月伴随高温产生的干旱胁迫抑制了马尾松的生长,上年气候对当年树木生长存在滞后影响。空间分析显示,研究区树轮年表与我国大范围季风区、西北干旱半干旱地区上年2—11月平均温度变化相关关系显著,与中南半岛北部地区当年6—9月平均温度显著负相关。1976—1977年前后树轮年表与海表温度空间相关型的变化,表明研究区夏季的温度气候要素与大尺度的气候驱动太平洋年代际震荡（PDO）有一定联系。

英文摘要：

Background, aim, and scope It is essential for researchers to know more about past climate variations from the study of climatic proxy data, such as ice core, loess, tree-ring and stalagmite. Tree-ring, due to its accurate dating, continuous, high resolution and sensitive to climate change, has been widely used to reconstruct the past climatic index. Many paleoclimate series has been rebuilt based on tree-ring width by researchers. In China, tree-ring studies in the subtropical regions are much rarer than extratropical regions, which are mainly caused by the complex relationship between environmental factors and the tree-ring growth in subtropical area and the difficulty in cross dating. Our study aimed to reveal the responding mechanism of tree-rings to climatefactors. Materials and methods In our study, the standardized tree-ring width chronology was developed based on 90 tree-ring cores from 42 healthy Pinus massoniana, collected from Guilin, in subtropical south China （25°22′--25°23 ′N, 110°31′--110°32′E, 480 m a.s.1） during September, 2015. All the tree-ring cores were dealt with standard dendrochronological method. The cores were visually dated and measured using the LINTAB measurement machine with resolution of 0.01 mm and cross dated by the COFECHA program. Then we use the series that successfully passed the COFECHA program to develop the standardized tree-ring chronology via the ARSTAN program. Considering the complex environment of sampling site, we use the mean meteorological data of the nearest three weather stations （Guilin station, Rong＇an station and Daoxian station, records from 1959 to 2014） to reduce the possible influence of micro-climate. To determine whether the climate had impact on the radial growth of Pinus massoniana and which climate factor limited tree growth most, we used Pearson correlation analyses to calculate the correlation coefficients between ring-width STD chronology and climate factors. Global Monthly Dai Palmer Drought Severity Index （PDSI） （108.75