成都市地表水微次表层污染物分布研究

选择成都市犀池、府南河及龙泉水库三类典型地表水体的六个采样点，调查了各水体微表层、次表层中总氮、总磷、高锰酸盐指数及叶绿素含量的分布，分析了微表层水体对污染物的富集情况。研究结果表明，三类典型水体微表层对总氮、总磷、COD及叶绿素均具有富集作用，平均富集系数分另，l为1．69、1．21、1．24及1．11；其中，微表层对总氮的富集作用最明显，而对叶绿素的富集差异较大，府南河微表层富集作用较犀池与龙泉湖水库强。此研究结果为地表水营养状态评价提供了新的思路。

Pollutants Distribution in Micro- surface and Subsurface of Surface Water in Chengdu

Six samples points of surface water in three typical waters including Xichi Lake,Funan River and Longquan reservoir were monitored,the distribution of total nitrogen,total phosphorus,permanganate index and chlorophyll content in micro-surface and subsurface of these waters were investigated and the pollutants enrichment situations were analyzed.The results showed that total nitrogen,total phosphorus,permanganate and chlorophyll were enriched in the micro-surface of three waters and average enrichment factors were 1.69,1.21 and 1.11 respectively.The enrichment effect on total nitrogen was most obvious,its effects on chlorophyll differed greatly and enrichment effect in Funan River was greater than that in Xichi Lake and Longquan reservoir.Such results provided new thinking ways for evaluation of nutrition situation of surface water.