煤矿塌陷湿地水体富营养化评价

以徐州某矿塌陷湿地为研究对象,通过对该矿塌陷湿地水体水质监测数据的分析,采用综合营养状态指数法（TLI）对该塌陷湿地水体的富营养化水平进行了评价。研究结果表明：①该矿塌陷湿地水体水质总体优于GB3838-2002Ⅳ类标准,TN和TP的平均含量分别为0.31mg/L和0.024mg/L,可达到Ⅱ类标准;②整个塌陷湿地水体的综合营养状态指数TLI为47.46,处于中营养状态,有向富营养化状态变化的趋势;③在水质监测数据的基础上,分析了水体营养状态变化的原因,并提出了针对该矿塌陷湿地水体的富营养化控制措施和建议。

Eutrophication assessment of collapse wetlands about coal

Taking the collapse wetlands of a coal from Xuzhou as a research object,based on the analysis of the water quality monitoring data of the collapse wetlands,the eutrophication level of the water body was evaluated by using comprehensive nutrition state index method.The result indicated： First,the water quality of the collapse wetlands was better than fourth level standard values,the average content of TN and TP were 0.31mg/L and 0.024mg/L and the water quality could meet second level standard values;Second,the comprehensive nutrition state index（TLI）of the water body was 47.46,and was in medium nutritional status,but it showed a trend from medium nutritional status to eutrophication;Third,on the basis of water quality monitoring data,this research analysed the causes of changes about the nutritional status of water body and gave the feasible measure and suggestions to control the eutrophication of the collapse wetlands.