东北二龙湾玛珥湖晚更新世晚期植被与环境变化的孢粉记录  

VEGETATION AND ENVIRONMENT HISTORY OF ERLONGWAN MAAR LAKE DURING THE LATE PLEISTOCENE ON POLLEN RECORD

作　　者：刘玉英[1] 张淑芹[2] 刘嘉麒[3] 游海涛[3] 汉景泰[3] 

机构地区：[1]吉林大学应用技术学院 [2]吉林大学古生物与地层研究中心,长春130061 [3]中国科学院地质与地球物理研究所,北京100029

出　　处：《微体古生物学报》2008年第3期274-280,共7页Acta Micropalaeontologica Sinica

基　　金：中国科学院知识创新重要方向项目(KZCX3-SW-145)

摘　　要：东北二龙湾玛珥湖孢粉记录显示,34kaB.P.以来,该区植被和气候经历了以下变化:34—29.3kaB.P.,发育山地寒温性针叶林,气候冷湿。29.3—12.6kaB.P.,该区以寒温性针叶林、桦树林为主,气候转向冷干发展,尤其在20.6—18.7kaB.P.(LGM)时,表现最为突出。12.6—8.9kaB.P.,该区植被为针阔叶混交林,气候由冷干向温湿逐渐过渡,8.9—4.6kaB.P.,为落叶阔叶林,气候温暖湿润。4.6kaB.P.至今,发育针阔叶混交林,气候向温凉转干方向发展。研究表明,MIS3a阶段,以二龙湾为代表的中国东北东部气候以冷湿为主要特征,而末次冰期对该区的影响直到12.6kaB.P.以后才结束。A vegetation-environment history has been reconstructed according to the pollen characteristics of Erlongwan Maar Lake since the last 34 ka B. P. During 34-29.3 ka B. P. （MIS3a）, there is coniferous forest, which mainly consists of Picea and Abies. Climate is cold and humid at that time. Later, between 29.3-12.6 ka B. P. , coniferous forest and birch forest develop, which indicates a dry and cold climate, especially in 20. 6-18. 7ka B. P. （ LGM ）. During 12.6-8.9 ka B. P. , there is conifer/broad-leaved forest and transitional climate, which indicates both temperature and humidity is increasing. In the period of 8.9-4.6 ka B. P. , abundant Quercus, Ulrnus and Juglans indicate a deciduous broad-leaved forest and warm, humid climate. After 4.6 ka B. P. , there is conifer/ broad-leaved forest with Pinus and herbage increasing gradually, and climate returns to cool and dry. The pollen result of Erlongwan reflects the cold and humid climate in the period of MIS3a dominates in the eastern region of N. E. China, and the influence of the Last Glacial Climate has continued till 12.6 ka B. P.

关 键 词：孢粉记录 古植被 古气候 晚更新世晚期 二龙湾玛珥湖 东北 

分 类 号：Q914[天文地球—古生物学与地层学]