信阳市某大型水库水质评价

Assessment of water quality on a reservoir in Xinyang

采用指数法和评分法对信阳市某大型水库的水质与水体营养状态进行评价,结果表明:该大型水库水质已不到地面湖泊水库 类标准,呈中度污染状态;水体为中-富营养水平,正向富营养状态发展;水体的主要污染成分为总磷和总氮,以总磷污染最为突出,应采取措施降低总磷含量,保障水库综合效益的发挥.

The assessment on water quality of a reservoir in Xinyang City was made by use of the methods of indices and scoring.The results indicated that this reservoir has been polluted by phosphorus and nitrogen.The water qualty of this reservoir is not better than that of Ⅲ grade water body in envir-onmental quality standard for surface water.The reservoir is in the state of meso-to entro-phication,therefore,some protection measures should be taken.