“十一五”期间内蒙古海勃湾断面水质状况及变化趋势分析

摘要

The water quality and trends of HaiBoWan section in Inner Mongolia during the ＂eleventh five＂ is analyzed using single-factor index,Integrated pollution index and rank correlation coefficient method in the paper.The results show that： the water quality of HaiBoWan section is maintained basicly at Ⅲ levels,and part time is maintained at Ⅳlevels or Ⅴ levels;and water quality is lightly polluted,.water quality is in general level;the change from the trend over years,no significant better trends are showed of water quality.%采用单因子指数、综合污染指数和秩相关系数法对海勃湾断面＂十一五＂期间的水质状况和变化趋势进行了分析。结果表明：海勃湾断面水质基本维持在Ⅲ类水平,部分时段达到Ⅳ类或Ⅴ类;水体水质受到轻污染,水质一般;从历年的变化趋势看,水质呈现不显著好转趋势。