乐清湾近代沉积物元素地球化学特征及环境意义

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。

GEOCHEMICAL CHARACTERISTICS AND ENVIRONMENTAL SIGNIFICANCE OF MODERN SEDIMENT OF YUEQING BAY

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...