大兴安岭库都尔地区兴安落叶松年轮宽度年表及其与气候变化的关系  

Larix gmelinii tree-ring width chronology and its responses to climate change in Kuduer,Great Xing’an Mountains

作　　者：张先亮[1,2] 崔明星[1,2] 马艳军 吴涛 陈振举[1] 丁玮航[1,2] 

机构地区：[1]中国科学院沈阳应用生态研究所,沈阳110016 [2]中国科学院研究生院,北京100049 [3]内蒙古库都尔林业局,内蒙古库都尔022164

出　　处：《应用生态学报》2010年第10期2501-2507,共7页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金项目(30600093;41071035);林业公益性行业科研专项(200804001)资助

摘　　要：基于建立的大兴安岭库都尔地区兴安落叶松树轮宽度年表,分析了兴安落叶松树轮宽度年表与该区温度、降水和帕尔默干湿指数(PDSI)等主要气候因子之间的关系.结果表明:研究区5月和7月的温度与兴安落叶松年轮宽度变化呈极显著负相关关系(P<0.01);虽然降水与年轮宽度变化没有表现出显著的相关关系,但6—8月PDSI与年轮宽度变化显著相关(P<0.05),说明兴安落叶松的生长明显受区域水热条件共同控制,且以5月和7月最显著.兴安落叶松树轮宽度年表与诸如太平洋年代际振荡(PDO)等大尺度气候系统波动的低频系数和高频系数之间呈显著相关,说明太平洋气候系统的波动对该区树木径向生长具有显著影响.Based on the established tree-ring width chronology of Larix gmelinii in Kuduer,Great Xing’an Mountains,this paper analyzed the relationships between L.gmelinii tree-ring width chro-nology and related climatic variables,including air temperature,precipitation,and PDSI.In the study area,the L.gmelinii tree-ring width chronology was significantly negatively correlated with the air temperature in May and July（P〈 0.01）,had no significant correlation with precipitation,but significantly positively correlated with the PDSI in June-August（P 〈0.05）,suggesting that hydro-thermal variables had significant coupling effects to the radial growth of L.gmelinii in its growth season,particularly in May and July.The L.gmelinii tree-ring width chronology had signifi-cant correlations with large scale climatic regimes such as the Pacific Decadal Oscillation（PDO） in both low and high frequency variations,illustrating the significant effects of the remote oceanic cli-matic regimes to the local tree growth.

关 键 词：库都尔 兴安落叶松 年轮宽度 年表 气候因子 

分 类 号：P467[天文地球—大气科学及气象学]