生物放大作用

红树林地区常见鱼类对重金属的生物放大作用的研究

Biomagnification of Heavy Metals in Common Fish from Mangrove Areas of China

重金属在环境中不能被降解，迁移能力差，并容易在生物体中富集，不易排出，在食物链中的生物放大作用明显，对生态系统中各种生物以及人体造成严重的为害。

Heavy metal in the environment can not be degraded and migrated badly and easily enriched at organisms in the food chain biomagnification obviously , which is not easy to discharge , do a variety of harm on biological as well as human health .

在此基础上，探讨了重金属元素经食物链产生的生物累积放大作用对位于食物链最高营养级鸟类生存所构成的潜在威胁，从而为珍稀水禽保护及管理措施的制定提供一些依据。

The influences of bioaccumulation on the aves on the top of food chains were discussed aiming to provide some inferences for the protection and management of endangered waterfowls .

目的探讨利用生物素-亲和素系统的靶向定位效应和生物放大作用，提高MR分子成像的敏感性。

Objective To improve the sensitivity of magnetic resonance molecular ( MR ) imaging on the basis of the targeting and magnifying effects of biotin-avidin system .

以水生生态模拟系统研究了不同水生生物对钷（~（147）Pm）的富集性及其通过食物链鱼体的生物放大作用。

Bioconcentration and magnification properties of 147Pm ( RE ) on fish in the aquatic food chain are studied by aquatic ecosystem model .