岷江上游水域水质现状及变化趋势研究

《岷江上游水域水质现状及变化趋势研究》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、after5．12WenchuanearthquakedisaSte璐，theMinjiangRiverupstreammaincurrentwatersurveillancematerialdemonstratedthattheSongpanCountyZhenjiangdosesthestationCROSSsectionwaterquality,theMowCounWstationcrosssectionwaterquality,theWenchuanCountyprestigestatestationcrosssectionwaterquality

2、tobesituatedbetweenI～UIKind．Comparesbeforetheearthquake，thewaterqualitychangeisnotbig，conformstothesurfacewaterenvironmentqualitystandard．Beforetheearthquake，thedomesticwaterenvironmentalconditionCandefinitelysupportthelocaleconomicsociety'sdevelopment,afterbigearthquake，causesthe

3、mountainmassiflandslide,theavalanche，themud．rockflOW,createsomeriversjamming,thevegetation，thefarmlanddestruction，hascertaininfluencetounderpadsurfacecondition,alsohascertaininfluencetotheaquaticenvironment．Throughwatersurveillance，afterMinjiangRiverupstreambranchmixedGuNaoheSangp

4、ingstationcrosssectionearthquake，themainultracodeistheammonianitrogen，itsreasonsuffersthedestructionunderpadsurfaceenvironmentcreates，butshakesthelattertimesthemonitorsituationanalysis，theultracodealreadytendstobenormal，waterqualityoverallstandardalreadyshakingearlierperiodlVTheki

5、nd，risesagaintothelaterperiodIIIKind．ThusitCanbeseenthewaterqualityrestorationisobvious，certainlyalongwithrainyseason’Soncoming,thesurfacesourceofpollutionwillstillcausethewaterqualitychange．4th，(1，1)themodelforecastingresultdemonstratedbyGM：(1)，theMinjiangRiverupstreammaincurrent

6、annualvariationtendencyperformanceincreasesunceasinglyfortheammonianitrogenandtotalhardnesstwowaterqualityf葡吐ors，hasfromthepresentsituationI—IIThekindtransitsII~ⅡIKindofwaterenvironmentqualitychangetendency．(2)，ammonianitrogenandinthepermanganateindextwowaterqualityfactoryearchang

7、estheperformanceis：5～inSeptemberwaterqualityindexisrelativelyhigh，inJuneandJulythewaterqualityindexwillreach，inOctoberthe—nextyearFebruarywaterqualityindexishighlow．Createsthiskindofchangetheprimarycauseisrainfallamountincrease，formsthesurfaceamountofrunoffincreases，leadstheMiniia

8、ngRiverupstreammaincurrentthenonp