Along with building Three Gorges Dam and exploiting the reservoir area, it is very important to strengthen studying environment evolvement of middle and upper reaches of Yangtse River.
随着三峡大坝的兴建和库区的开发，加强对长江中上游环境演变的研究就显得非常重要。
3
The cadmium contents of the water-level-fluctuating zone soil of the Three-Gorges reservoirs area in theYangtse river main stream and its branch-Xiaojiang river are reported.