These species could tolerate the organicpollution and low dissolved oxygen.
优势种为轮虫类和枝角类，这此种类极耐有机污染，耐低溶氧。
2
Organicpollution is the major diffuse pollution ta the Xili Reservoir in Shenzhen City.
深圳市西沥水库受到的面源污染多为有机物污染。
3
The paper analyses the status and the harms of organicpollution of Songhua River system and raises the prevention and countermeasures of organicpollution.