城市景观水体的富营养化研究

Study on Eutrophication of Urban Landscape Water Body

通过对水样pH值、电导率(EC)、总溶解固体量(TDS)、溶解氧(DO)、氨氮、化学需氧量(COD)、总氮(TN)、总磷(TP)、叶绿素a(chla)、透明度(SD)等指标的测定,采用综合营养指数法对桐城市龙眠河市区段水体的富营养化情况进行了研究。结果表明:水体为Ⅲ类水,水体富营养化综合指数在37.2~50.8之间,没有达到富营养水平,部分区域达到了轻度富营养化的水平,主要污染因子为TN和叶绿素a和SD。

The indicators of the water PH value and conductivity （EC）, total dissolved solids （TDS）, dissolved oxygen （DO）, ammonia nitrogen, chemical oxygen demand （COD）, total nitrogen （TN）, total phosphorus （TP）, chlorophyll a （Chla）, transparency （SD） were measured, using comprehensive nutrition, the number of eutrophication of the city water of Tongcheng Longmian River were studied. The results show that the water for the class Ⅲ water, eutrophication index in 37.2 - 50.8, did not reach the eutrophic level, part of the region reached a mild eutrophic level. The main pollutants are TN and chlorophyll a and SD.