哈萨克斯坦Tramplin剖面孢粉记录的MIS3a环境变化  

MIS3a Palaeoenvironment History Recorded by Pollen of Tramplin Section in Kazakhstan

作　　者：黄昌庆[1,2,3] Liu Kambiu 冯兆东[4] 冉敏[1] 杨奇丽[1] 张晓森[1] 

机构地区：[1]兰州大学西部环境教育部重点实验室,兰州730000 [2]美国路易丝安娜州立大学海洋系,美国巴吞鲁区70803 [3]铜仁学院法政系,贵州铜仁554300 [4]新疆大学绿洲生态教育部重点实验室,乌鲁木齐830046

出　　处：《吉林大学学报（地球科学版）》2013年第1期149-154,共6页Journal of Jilin University：Earth Science Edition

基　　金：国家自然科学基金项目(40671190);美国国家自然科学基金项目(NSF-BCS-06-52304)

摘　　要：利用AMS 14 C测年,通过对哈萨克斯坦南部Tramplin黄土-古土壤沉积剖面的孢粉分析,揭示了中亚干旱区深海氧同位素(MIS)3a阶段植被和气候演化历史:41.4ka B.P.以前,植被为蒿属植物占优势的荒漠草原,气候干旱;41.4～40ka B.P.,植被为蒿草草原,气候湿润程度增加;40～36ka B.P.,植被为蒿属植物占优势的荒漠草原,气候湿润程度轻微下降;36～33ka B.P.,植被为蒿草草原,气候湿润程度增加;33～30ka B.P.,植被为蒿属植物占优势的荒漠草原,湿润程度轻微下降;30～28ka B.P.,植被为蒿草草原,气候湿润程度轻微上升。Based on AMS 14C age data, a pollen record from Tramplin section which is Loess-paleosol deposition in south Kazakhstan is analyzed. It displays vegetation and climate history in central Asia in MIS3a stage as below： before 41.4 14C ka B. P. , Vegetation was Artermisia desert-steppe and climate was dry; 41. 4 - 40 14 C ka B. P. , Vegetation was Artermisia steppe and climate turned to be wetter slightly; 40 - 36 14C ka B. P. ,Vegetation was Artermisia desert-steppe and climate was dry; 36 - 33 14C ka B. P. ,Vegetation was Artermisia steppe and climate turned to be wetter slightly; 33 - 30 14C ka B. P. ,Vegetation was Artermisia desert-steppe and climate turned to be drier slightly; 30 -28 14C ka B. P. , Vegetation was Artermisia steppe and climate turned to be wetter slightly.

关 键 词：中亚干旱区 深海氧同位素3a阶段 孢粉 气候变化 植被 

分 类 号：X173[环境科学与工程—环境科学]