广西南宁市和崇左市草鱼养殖水体水质定点监测及分析

为了解目前广西南宁市和崇左市草鱼养殖水域的水质状况,于2009年1～6月对南宁市和崇左市4个草鱼养殖水域水质进行监测和取样,采用通用、成熟和可比性强的指数法,对主要污染物的特征值进行统计分析。并根据水域的环境特点,划分出5个评价区,对主要污染物质进行分析、比较和评价,对各养殖水域水质进行综合评价。评价结果表明,南宁市和崇左市草鱼养殖水域的主要污染物质为悬浮物、化学耗氧量（COD）、氨氮、生物耗氧量（BOD）和活性磷酸盐。各个草鱼养殖监测水域的水质均受到不同程度污染,其中以靠近城镇生活区的养殖水域污染较为严重。

Fixed-point monitoring and analysis of water quality in grass carp culture environments

The present study was conducted to explore the current water quality status in grass carp culture aquatorium in Nanning and Chongzuo City,Guangxi,China.The water quality of four grass carp culture aquatorium were moni-tored and sampled from January to June,2009,and the characteristics value of major pollutants were statistically analyzed by using proper index method.According to the environmental traits of the aquatorium,the water quality status was divided into five evaluation grades and the major pollutants were analyzed,compared and evaluated comprehensively.The evaluation results showed that the main pollutants in grass carp culture aquatorium were suspension,COD,ammonia nitrogen,BOD and active phosphate.The different monitoring culture aquatorium of grass carp had been polluted in various degree,and those culture aquatorium near to living areas of town had been found severely polluted.