罗霄山地区黄山松径向生长特征及其对气候变化的响应  

Climatic response of the stem radial growth of Pinus taiwanensis in the Luoxiao Mountains

作　　者：刘文宇 黄念钧 杨衍辉 胡昆 王井泉 左传莘 Liu Wenyu;Huang Nianjun;Yang Yanhui;Hu Kun;Wang Jingquan;Zuo Chuanxin(Jiangxi Jinggangshan National Nature Reserve Administration Bureau,Jinggangshan Jiangxi 343600,China;The Luofu Forest Farm of Jiangxi Jinggangshan National Nature Reserve Administration Bureau,Jinggangshan Jiangxi 343600,China)

机构地区：[1]江西井冈山国家级自然保护区管理局,江西井冈山343600 [2]江西井冈山国家级自然保护区管理局罗浮林场,江西井冈山343600

出　　处：《南方林业科学》2024年第3期39-44,共6页South China Forestry Science

基　　金：江西省自然科学基金(项目编号:20212BAB205018)。

摘　　要：作为我国亚热带地区高海拔特有针叶树种黄山松,探讨其径向生长特征及对气候变化的响应,对评估黄山松种群的生长动态具有重要意义。在罗霄山北、中、南三地分别建立了黄山松树轮宽度年表,采用相关分析法分析黄山松径向生长对气候要素的响应关系。结果表明:罗霄山中部地区的黄山松相较南部和北部具有更大的生长共性特征,预示中部地区黄山松种群更易受到环境胁迫。自北往南,黄山松树轮宽度的自相关性减弱,而与气候要素的相关性逐渐增强;表明前期生长的持续性对当年生长量的贡献减弱,而气候的限制作用增强;黄山松树轮宽度对气候的响应具有明显的空间异质性。北部受上年及当年生长季前期的热量和光照驱动,中部则受降水和相对湿度抑制作用明显,而南部则受热量的促进作用明显。The Pinus taiwanensis is one of the native tree species in high-altitude subtropical regions in China.For the purpose of assessing the growth dynamics of the P.taiwanensis,it is crucial to examine the radial growth features and how it responds to climatic change.This work established three tree-ring width chronologies in the north,centre,and south of Luoxiao Mountains for P.taiwanensis,and the response relationship between the radial growth of P.taiwanensis and climate factors was analyzed by correlation analysis.The findings indicated that the population in central part was more susceptible to environmental stress since its growth commonality was higher there than it was in northern and southern parts.The autocorrelation of tree-ring width reduced from north to south as the connection with climate gradually rose.The findings demonstrated that while the climate′s limiting effect was reinforced,the sustainability of early growth′s contribution to present growth was diminished.There was a clear geographical variation in the climatic response of tree-ring width.The previous year′s heat and light influenced the northern tree growth,while the middle region was hampered by precipitation and relative humidity,and the southern region was favored by heat.

关 键 词：黄山松 径向生长 气候变化 罗霄山脉 

分 类 号：S791.24[农业科学—林木遗传育种] S718.512[农业科学—林学]