摘要
对长江口区３２个表层样的２８种元素进行数理统计分析，并结合该区的水文、地貌和沉积环境等背景资料．探讨长江口区沉积物的元素地球化学特征。Ｑ型聚类分析结果表明长江口可划分为四大沉积地球化学区，Ｒ型因子分析揭示了控制长江口区元素来源和分布的主要因素。
A quantitative study of the sedimentary geochemical characteristics has been carried out for 32 surface samples in the Changjiang estuarine region. There are altogether 28 chemical elements determined by ICP. In combination with the background materials of hydrology,geomorphology and sedimentary environment, a Q-mode cluster analysis shows that four sedimentary geochemical provinces can be divided in the studied area. Meanwhile,R-mode factor analysis reveals that the distribution of the chemical elements is mainly controlled by grainsize, marine biogeochemical processes, terrigenous deposit and environmental hydrologic conditions.
出处
《华东师范大学学报（自然科学版）》
CAS
CSCD
1996年第1期73-84,共12页
Journal of East China Normal University(Natural Science)
关键词
沉积地球化学
数理统计
长江口
sedimentary geochemistry mathematical statistics Changjiang Estuary
