天津津河营养状态综合评价及防治对策

Integrated Evaluation of Trophic Status and Protective Countermeasure of Jinhe River in Tianjin

2000年10月对改造过的津河设8个取样点,未改造过的卫津河设2个取样点,进行采样,测定其主要化学因子和浮游生物。依据总氮、总磷、溶解氧、叶绿素a及指示藻类综合评价水体的营养状态:位于卫津河的9、10站位处于极富营养化,位于津河的1-8站位的水质总体好于卫津河河段,但有的站位也呈现一定程度的富营养化,津河的总体营养水平为中-富营养化。藻类定性分析表明水体富营养化类型为绿藻-硅藻型。建议加强环境保护的宣传和管理工作、逐步实现雨污分流、保证水源水质,有效地保护津河水环境。

8 sampling stations at Jinhe River, which had been reconstructed, and 2 sampling stations at Weijin River, which had not been reconstructed, were selected at October, 2000. Some chemical factors and plankton were investigated. According to such water quality parameters total nitrogen (TN), total phosphorous(TP), dissolved oxygen (DO), chlorophyll (a) (Chla) and indicator algaes,the trophic status was evaluated. 9th and 10th stations at Weijin River were over-eutrophication, the water quality of Jinhe River is better than that of Weijin River, but some stations have eutrophication in some extent and the total trophic status of Jinhe River was meso-eutrophication. The qualitative analysis of algae demonstrated that the dominated species of the two rivers are Bacillariophyta and Chlorophyta. Measures were suggested to protect the water environment of Jinhe River, including reinforcing the education and management of environmental protection, achieving the diversion of rain and sewage step by step, controlling the inflow water quality of Jinhe River. 