涇惠渠灌區(qū)地下水中三氮分布特征及其影響因素的研究.pdf

1、長安大學碩士學位論文涇惠渠灌區(qū)地下水中三氮分布特征及其影響因素的研究姓名：韓彩波申請學位級別：碩士專業(yè)：環(huán)境工程指導教師：李佩成20100529AbstractAsanimportantwaterresources，ground、lⅣater，ifpolluted，wouldbedif五culttoupdateandrecoVe巧，whichmi曲tcause鏟eathannAmongthecontaminant，p01lutionof

2、nitrogeningroundwaterwillmakeconsumerpoisoningandcausecancerInrecentyears，althoughtheproblemofnitrogenpollutionwasconcemedgreatly，itdidn’tcar巧outaspecialstudiest0researchnitrogenpollutioningroundwaterintheJinghuii11rigat

3、iondistrictsTherefore，itisnecessarytoanalyzeaJldresearchnitrogenpollutioninthisareaAccordingtothefactofthreenitrogenpollutionofJinghuiirrigationdistricts，combiningwithhydrogeologicalconditionofi仃igation，tllepaperresearch

4、esthedistribution，factorsandsourceofnitrogeninJinghuiqutIlrou曲analysisofwaterqual時dataongrounil、vaterandsoilprofileinrecentyearsSpatialdistributionofthreenitrogencontentischaracterizedbystronganisotropyanddecliningpollut

5、ionHighnitrateconcentrationsareaSaremainlyintheNonheaStofSallyuaIl，NonhWestofYanliang，nearwestriVerofJingyangandaroundofnonhGaolingInthenewVillageinJingyangwhereJieziVillagebet、ⅣeenJingyangandSan”anisatthejunctionandnear

6、byDuVillageinSaJlyuancoun哆，therearemuchofllitrite111addition，neartheVillageofTianyaIl，therearelotsofanlmonianitmgenBasedonthestudyofthreenitrogencontentandchemicalcharacteristicsofgroundwater，theauthorfoundthatmetmsferan

7、dtransfo腫ationoftueenitrogenwereinfluencebyaquiferlithology，groundwaterdepthandchemicalcharacteristicsofgroundwaterMangaJleseandmagnesiumionsontheconVersionofthreenitrogenwaSsigni6cantlycorreIatedJinghuiirrigationdistric

8、tisthemaingrainproducingarea，whereaconsiderableponionofnitrogenpollutioningroundwaterarefromagriculturepollutionNitrateinsoilprofileincreasedwithdepthreductiona11d鋤moniumionremained，whichindicatedthatnitrateiseasierdisso

9、lvedinwaterthall觚眥onianitrogenand詫nilizationwillspeeduptheleachingofnitrate，thereforepollutionofgmund、VaternitrogenwillbeintensifiedThedataofsoilpmfileofpaStt、)l，oye2ursshowthatsoilnitratepollutionhasincreaSedThemostseri

10、ousnitrogenpollutionisnitratepollutioninJinghuiirrigationdistrictThe1argestareaofpollutionis舶mnitritepollutiona11dtheaIllnloniapollutioncausedthesmallestareaInrecentyears，thecontentoftllreenitrogeninJinghuiquisreducingaI