2008年2期

史威,王富葆,韩辉友.句容宝华山麓距今5700年前后的地层与古气候[J].地层学杂志, 2008, (2): 54-61.

史威,王富葆,韩辉友.STRATIGRAPHY AND PALAEOCLIMATOLOGY AROUND 5700aBP AT THE FOOT OF BAOHUA MOUNTAIN OF JURONG,SOUTHERN JIANGSU[J].Journal of Stratigraphy, 2008, (2): 54-61.

句容宝华山麓距今5700年前后的地层与古气候
史威 1 王富葆 1 韩辉友 1
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+ 作者地址

1南京大学地理与海洋科学学院,南京大学地理与海洋科学学院,南京大学地理与海洋科学学院 江苏南京210093 江苏教育学院地理系江苏南京210013,江苏南京210093,江苏南京210093

结合长江下游沿江地区埋藏古树和泥炭形成时间,以及南京浦口林峰桥中晚全新世地层的沉积相特征和地球环境化学分析,江苏南部句容宝华山麓距今5700年前后洪—坡积相地层特征、剖面沉积物中孢粉—气候转换曲线反映:距今5700年前后本区曾经发生过降温干燥事件,宝华山地区当时最低年均温为12.56℃,最低年均降水量为716.40mm。林峰桥剖面对应层位淤泥质沉积物中黏土含量及铁离子含量的异常变化验证了该事件的存在。同时研究也表明,此冷干事件不仅是区域古气候异常变化的反映,还具有全球气候变化的响应特征。
语种: 中文   
基金: 国家自然科学基金重大研究计划(No90411015)项目;南京大学测试基金资助项目
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