乐清湾近代沉积物元素地球化学特征及环境意义  

GEOCHEMICAL CHARACTERISTICS AND ENVIRONMENTAL SIGNIFICANCE OF MODERN SEDIMENT OF YUEQING BAY

作　　者：丁海燕[1] 张振克[2] 

机构地区：[1]江苏滩涂生物资源与环境保护重点建设实验室城市与资源环境学院 盐城师范学院,江苏盐城224002 [2]京大学海岸与海岛教育部重点实验室,江苏南京210093

出　　处：《海洋湖沼通报》2010年第1期139-145,共7页Transactions of Oceanology and Limnology

基　　金：南京大学人才引进启动经费支持项目“近岸带不同类型沉积物环境沉积学研究”资助

摘　　要：为研究近岸带不同类型的沉积物的环境沉积特点,对乐清湾潮水道和养殖区进行了底质沉积物取样,并在实验室内进行了粒度和元素地球化学特点的分析。发现:乐清湾周边大量工业废水的排入及亚热带气候下元素易于流失等因素对湾底沉积物中元素地球化学特点有很大影响;多数元素在养殖区底质沉积物中的平均含量及表层含量均稍高于潮水道底质沉积物中的含量,相对于地壳的富集系数也是在养殖区沉积物中较高,这与养殖区内沉积环境较稳定、细颗粒物质易在此沉淀有关。To study the different types nearshore modern sediments geochemical characteristic,the paper analyzed the characters of the grain size and the modern sediment element geochemistry in typical area of Yueqing Bay,and found： the enter of the industry waste water and the element lapsing because of the semitropical weather effect highly the character of the element;the content of the majority element of the core and surface sediment in breed aquatics area is much more than the tidewater channel,so the Enrichment factors,which collect with the stable sediment condition and the fine grain substance deposit here easily.

关 键 词：现代沉积物 元素地球化学 环境意义 乐清湾 

分 类 号：P512.2[天文地球—地质学]