贵阳市鱼梁河龙洞堡段枯水期水体总氮与总磷特征

82Vol．8No．2JOURNALOFGUIYANGCOLLEGE20136NaturalSciencesQuarterlyJun．2013＊李素莲1，刘伟2，张姣姣11．5500052．110013以贵阳市鱼梁河龙洞堡段为研究对象，根据河段两岸功能区分布，布设5个监测断面，于枯水期开展水体总氮、总磷短时间尺度(5天一个样品)的同步监测。结果表明，研究区水体受人为活动影响，总氮、总磷含量增加，故应严格控制人为活动，尤其是农业活动产生的磷污染向水体的输入。鱼梁河;总氮;总磷;氮磷比X832A1673－6125(2013)01－0006－03ThecharacteristicsoftotalnitrogenandtotalphosphorusinriverwaterofLongdongbaoSectionofYuliangRiverGuiyangCityduringdryperiodLISu-lianLIUWeiZHANGJiao-jiao1．SchoolofChemistryandMaterialScienceGuiyangUniversityGuizhouGuiyang5500052．GeologicalExplorationResearchInstituteoftheBureauofNon－ferrousGeologyofLiaoningProvinceLiaoningshengyang110013AbstractTheLongdongbaoSectionofYuliangRiverwasselectedtomonitorthedynamiccharacteristicsoftotalnitrogenandtotalphosphorusinriverwater．Accordingtothedistributionofdifferentfunctionalzonesalongtheriverbankfivemonitoringsectionsweredesigned．Duringdryperiodwatersampleswerecollectedsynchronouslyfromthesefivemoni-toringsectionswithsamplingintervalof5days．Thewatersampleswereanalysedfortotalnitrogenandtotalphosphorus．TheresultsshowedthattheconcentrationsoftotalnitrogenCTNandtotalphosphorusCTPinriverwaterwerein-creasedbyhumanactivities．Thereforephosphorusinputtoriverfromhumanactivitiesespeciallythenonpointsourcepollutionfromagriculturemustbestrictlycontrolled．KeywordsYuliangRivertotalnitrogentotalphosphorusN/Pratios0。1－3、Redfield。4－7。89、、—6—*2013－04－151981－。。1982－。。1980－。。。、。11．1、、、。51。20093532551。50cm250ml3pH≤20～4℃24。。1Fig．1Schematicmapshowingthelocationsofthesamplingsites1．2《－》GB11894－89《－》GB11893－89。2NT、GY、LG、DJXY、、、。、2、31—7—1Tab．1Thestatisticalcharacteristicsoftotalnitrogenconcentrationsandtotalphosphorusconcentrationsofwatersamplesforeachmonitoringsectionmg/L1．671．561．051．230．530．100．010．040．040．020．060．010．030．030．04mg/L0．110．100．040．040．030．030．010．000．000．000．250．110．000．110．002．1、。、。、ⅤⅡⅢ。2．2ⅤⅡⅢ。、、、、。2．3ⅣⅡ。。2．4ⅣⅡ。。2．5ⅢⅡ。。2．61106CO2+16NO－3+HPO2－4+122H2O+18H++→C106H263O110N16P+138O21616。、133。3、、、、、。。15—8—∵limx→∞fx－1gx=limx→∞22x－1x+1=1∴limx→∞2x+12x－1x+1=e．6limx→π2sinxtanx∵limx→π2fx－1gx=limx→π2sinx－1tanx=limx→π2sinx－1cosx·sinx=limx→π2sinx－1cosxlimx→π2sinx=limx→π2sinx－1'cosx'=limx→π2cosx－sinx=0．∴limx→π2sinxtanx=e0=1．3。、。“”。1．M．2007．81YangXEWuXHaoHLetal．Mechanismsandas-sessmentofwatereutrophicationJ．JournalofZhejiangUniversitySCIENCEB200893197－209．2．J．200933334－335．3．J．200916233－239．4RedfieldAC．ThebiologicalcontrolofchemicalfactorsintheenvironmentJ．AmericanScientist1958463205－221．5HodgkissIJHoKC．ArechangesinNPratiosincoastalwatersthekeytoincreasedredtidebloomsJ．Hydrobiologia19971－3141－147．6KlausmeierCALitchmanEDaufresneTetal．Opti-malnitrogen－to－phosphorusstoichiometryofphytoplank-tonJ．Nature20046988171－174．7．J．200948284－89．8．J．200022460－66．9CloernJE．OurevolvingconceptualmodelofthecoastaleutrophicationproblemJ．MarineEcologyProgressSe-ries2001210223－253．—51—