福建漳浦海岸沙丘粒度参数记录的环境演变  

Environmental Evolution Recorded in the Grain-Size Parameters of Coastal Dune Profile in Zhangpu,Fujian

作　　者：王贤立[1,2] 李志忠[1,2,3] 靳建辉[1,2,3] 夏菁[1,2] 龚松柏[1,2] 邓涛[1,2] 

机构地区：[1]福建师范大学地理科学学院,福建福州350007 [2]湿润亚热带山地生态国家重点实验室培育基地,福建福州350007 [3]福建师范大学地理研究所,福建福州350007

出　　处：《地理与地理信息科学》2014年第3期150-155,158,F0003,共8页Geography and Geo-Information Science

基　　金：国家自然科学基金项目(41271031;41301012);中国科学院黄土与第四纪地质国家重点实验室开放基金项目(SKLLQG1113);福建省自然科学基金面上项目(2013J01153);福建省科技厅省属公益类科研院所研究专项(2013R09);福建省教育厅A类科技项目(JA11061);大学生创新创业训练项目(201310394019)

摘　　要：我国东南沿海广泛分布的海岸沙丘是海岸带环境演变的产物。该文对福建东南漳浦古雷海岸沙丘剖面(GL)进行了年代学、粒度参数和成因判别分析,在此基础上提取了对冬季风强度变化敏感的粒级组分,同时综合历史文献气候记录和泥炭地质记录分析,初步确定了研究区近1 300年以来海岸沙丘记录的冬季风环境演变信息,大致可划分为3个阶段:680-1100AD,海岸带冬季风强度总体较弱,后期表现为增强趋势,反映风暴潮活动频繁、气候温暖的海岸环境;1100-1700AD,海岸带冬季风强度波动增强,反映风沙活动强烈、较寒冷的海岸气候环境;1700AD至今,冬季风强度波动减弱,反映海岸气候环境在波动中回暖、风暴潮活动趋于增强。The coastal aeolian sand widely distributes in southeast coastal of China is the result of the coastal environment evolution.On the basis of chronology analysis,grain-size parameter analysis and the cause analysis of the coastal dunes,the grain-size components that is sensitive to winter monsoon intensity change were got.And the information on the climatic environmental changes in recent 1 300 years was got based on the analysis of sensitive component,historical documents and geological record of peat.The results indicated that the reconstructed history of coastal environment evolution in the study area could be divided to three main phases：1） 680-1100AD,the coastal winter monsoon intensity was relatively weak,yet with gradual increase in the later period,which reflected frequent storm surge activity and warm coastal environment.2） 1100-1700AD,fluctuations of coastal winter monsoon intensity enhanced,which showed the strong aeolian sand activity and relatively cold coastal climate environment.3）1700AD to the current,the winter monsoon intensity fluctuations weakened,which manifested a phenomenon that coastal climate was warming during fluctuating and the storm surge activity increased gradually.

关 键 词：海岸沙丘 粒度参数 敏感粒径 风力作用 风暴潮作用 福建漳浦 

分 类 号：P534.63[天文地球—第四纪地质学]