沈阳张士灌区镉污染生态的研究

POLLUTION ECOLOGY OF Cd IN THE ZHANGSHI IRRIGATION AREA OF SHENYANG

本文揭示了污染物镉从污染源——污染水体——张士灌区农田生态系统——人体的生态循环规律;各种环境因素、灌溉条件、栽培作物等对镉的行为的影响及其对人体造成的危害,为镉污染的治理从理论和实践上提供了重要依据。

Zangshi irrigation area is the notorious heavy pollution area by Cd in China. In this paper, different kinds of ecocycle model are revealed i.e., how Cd was transformed from pollution sources into irrigation water, agroeccosystem and human body. It is stated that there is an active cycle of Cd in natural envilbn-ment, specified irrigation system, cultivated crops and food composition. Human health is seriously affected in Zhangshi irrigation area.