长白山北坡不同林型内红松年表特征及其与气候因子的关系

运用树木年轮学的基本原理和方法,选取了长白山北坡保存完好的典型性植被阔叶红松林,探讨了杨桦红松林和椴树红松林内建群种红松(Pinus koraiensis)径向生长对气候要素的响应.结果表明,长白山北坡红松的径向生长对降水较为敏感,杨桦红松林和椴树红松林中,红松年轮宽度均与当年7月以及上一年9月的降水呈显著正相关关系.不同林型内红松的生长与气候因子的关系也有差异.椴树红松的年轮宽度还与上年7月的降水显著负相关,与当年3、4月份的平均气温呈显著正相关.而杨桦红松林内红松年轮宽度和平均温度没有显著的相关关系.特征年分析进一步验证了响应函数相关分析的结果,即当年生长季以及上年生长季末的降水充足促进了红松的径向生长；椴树红松林中,初春温度的升高有利于红松的生长.

Characteristics of tree-ring chronology of Pinus koraiensis and its relationship with climate factors on the northern slope of Changbai Mountain

We used the dendrochronology method to investigate the radial growth of Pinus koraiensis response to climate change in the poplar-birch Korean pine forest and linden-Korean pine forest on the northern slope of Changbai Mountain, Northeastern China. The result indicated that the radial growth of Pinus koraiensis was sensitive to precipitation and Pinus koraiensis growing in two forest types responded to climate differently. Response function showed that monthly total precipitation in current July and previous September significantly positively affected tree growth of Pinus koraiensis in both forest types. In linden-Korean pine forest, ring width was also significantly negatively correlated with precipitation in the previous July and was significantly positively correlated with mean temperature of current March and Spring. Ring width in poplar-birch Korean pine forest did not show any significant correlation with mean temperature. Point year analysis confirms the result of response function analysis, indicating that precipitation in the current growing season and the end of previous growing season positively affected the radial growth of Pinus koraiensis, and temperature increasing in Spring positively affected radial growth of Pinus koraiensis.