秦岭中、西部地区温度变化的树木年轮记录  

Temperature variability referred from tree rings in central and western Qinling Mountains,China

作　　者：包光[1,2] 刘娜[1,2,3] 刘禹[2,3] 

机构地区：[1]宝鸡文理学院地理与环境学院陕西省灾害监测与机理模拟重点实验室,宝鸡721013 [2]中国科学院地球环境研究所黄土与第四纪地质国家重点实验室,西安710061 [3]西安交通大学人居环境与工程学院地球环境科学系,西安710049

出　　处：《地球环境学报》2015年第3期154-160,共7页Journal of Earth Environment

基　　金：陕西省自然科学基础研究计划项目(2014JQ5192);国家自然科学基金项目(41301101);黄土与第四纪地质国家重点实验室开放基金项目(SKLLQG1302);宝鸡文理学院重点项目博士启动基金(ZK11063)

摘　　要：使用相关系数、气候要素异常分布及空间相关等方法,对比分析了秦岭中部和西部不同树种不同树轮参数指标的气候响应差异特征。结果表明,秦岭中部分水岭地区的太白红杉树轮宽度差值年表与秦岭西部石门山地区油松早材密度标准化年表均保留了生长季前期(特别是5月)的温度变化信号。两个年表能够记录区域尺度的极端高、低温度年份,且异常高温年份反映了研究区域及周边大范围的干旱状况。研究结果显示了在秦岭地区结合多树种多树轮参数指标开展区域多时空尺度的气候变化集成研究具有很大的潜力和价值。Climate-growth relationships between tree-ring width and density chronologies and climatic factors in central and western Qinling Mountains were investigated by the methods of Pearson＇s correlation and spatial correlation. The results showed that the common early growing season （especially in May） temperature signal was captured by ring-width residual chronology of Larix chinensis in central Qinling Mountains and earlywood density standard chronology of Pinus tabulaformis in western Qinling Mountains. Extremely high- and low-temperature years occurred on the regional scale were referred from both chronologies. And extremely high-temperature year associated with regional severe drought event to same degree. The results shed a light on studies of climate changes in the Qinling Mountains through integrating multi-parametric indicators of tree rings from multi-species.

关 键 词：秦岭 温度变化 树轮参数 极端气候 

分 类 号：P467[天文地球—大气科学及气象学]