全新世以来岱海盆地植被演替和气候变化的孢粉学证据  

Pollen Evidence of Vegetation and Climate Changes in Daihai Lake Area During the Holocene

作　　者：许清海[1] 肖举乐[2] 中村俊夫[3] 阳小兰[4] 郑振华[4] 梁文栋[2] 李月丛[2] 井内美郎[5] 

机构地区：[1]河北师范大学资源与环境学院,河北石家庄050016 [2]中国科学院地质与地球物理研究所,北京100029 [3]名古屋大学年代测定综合研究中心 [4]河北省科学院地理研究所,河北石家庄050011 [5]爱媛大学生物地球圈科学系

出　　处：《冰川冻土》2004年第1期73-80,共8页Journal of Glaciology and Geocryology

基　　金：国家科技部重大基础研究前期研究专项(2003CCA01800);国家杰出青年科学基金项目(49925205);国家自然科学基金项目(40171095);河北省自然科学基金项目(402615)资助

摘　　要：岱海盆地99A孔11 01m以上地层较高分辨率的孢粉分析揭示了该区12000calaBP以来的植被演替和气候变化.早全新世时期,岱海盆地受冬季风影响强烈,气候波动以冷湿、暖干为主,12000～11000calaBP为以白桦林为主的森林草原植被,气候寒凉湿润;11000～7900calaBP白桦林退缩,气候温干;中全新世时,主要受控于夏季风影响下,气候波动以冷干、暖湿为主,7900～4450calaBP是岱海盆地森林植被发育最好的时期,气候温暖湿润,4450～2900calaBP森林开始退缩,气候温干;2900～0calaBP在气候变凉干和人类活动的影响下,森林植被几近消失.A high-resolution pollen analysis of the Daihai Borehole 99a reveals the vegetation succession and climate changes of Dahai Basin since {12 000} cal. a BP. It was dominated by winter monsoon climate changing from cold and humid to warm and dry during the Early Holocene. There was a forest dominated by Betula and grass vegetation with cold and humid climate in the period of {12 000}～{11 000} cal. a BP. Since then, the Betula forest has reduced as climate changing to warm and dry until {7 900} {cal a BP}. Then it was influenced by summer monsoon climate changing from cold and dry to warm and humid during the Middle Holocene. It was the best times for trees growing with warm and humid climate in the period of {7 900}～{4 450} {cal a BP}, and the forest began to reduce seriously in the period of {4 450}～{2 900} {cal a BP} while climate became cool and dry. Under the influence of cooler and drier climate and human destroy,the forest almost disappeared in Daihai Basin Area since {2 900} cal. a BP.

关 键 词：岱海盆地 全新世 植被演替 气候变化 

分 类 号：P534.632[天文地球—第四纪地质学] P467[天文地球—古生物学与地层学]