洋河水库水质现状分析

Analysis of water quality status of the Yanghe River reservoir

对2002年～2012年洋河水库水质监测结果进行分析和评价。结果表明，仅2007年洋河水库的水质未达到Ⅱ类水质标准。主要超标项目为：高锰酸盐指数、化学需氧量、生化需氧量、氨氮、总磷。综合营养状态指数为24.89～28.81，均处于贫营养状态。chla季节变化较为明显。

The2002~2012monitoringresultsintheYangheRiverreservoirwaterqualityanalysisandevaluation.Theresultsshowthatthewaterqual-ityoftheYangheRiverreservoir,onlyin2007didnotreachthesecondclasswaterqualitystandard.Themainprojectsare：exceedthestandardpotassium permanganateindex,chemicaloxygendemand,ammonianitrogen,totalphosphorus,biochemicaloxygendemand.Comprehensivenutritionstatein-dexwas24.89~28.81,areinpoornutritionalstatus.Chlaseasonalvariationisobvious.