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Effects of Different Ratios of Nitrogen Forms on Gas Exchange of Saussurea katochaete Maxim and Total Biomass of the Community Under the Experimental Warming

人工增温条件下不同氮素形态比对重齿风毛菊气体交换及其群落生物量的影响



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犈犳犳犲犮狋狊狅犳犇犻犳犳犲狉犲狀狋犚犪狋犻狅狊狅犳犖犻狋狉狅犵犲狀犉狅狉犿狊狅狀犌犪狊犈狓犮犺犪狀犵犲狅犳犛犪狌狊狊狌狉犲犪
犽犪狋狅犮犺犪犲狋犲犕犪狓犻犿犪狀犱犜狅狋犪犾犅犻狅犿犪狊狊狅犳狋犺犲犆狅犿犿狌狀犻狋狔
犝狀犱犲狉狋犺犲犈狓狆犲狉犻犿犲狀狋犪犾犠犪狉犿犻狀犵
WUChu1,LUGuangxin2,DEKejia3,ZHANGMing3,WANGJunbang4
(1.ColegeofHorticulture&Gardening,YangtzeUniversity,Jingzhou,HubeiProvince434025,China;
2.AgricultureandAnimalHusbandryColege,Xining,QinghaiProvince810016,China;
3.QinghaiAcademyofAnimalandVeterinaryScience,Xining,QinghaiProvince810016,China;
4.InstituteofGeographicSciencesandNatureResourcesResearch,CAS,Beijing100094,China)
犃犫狊狋狉犪犮狋:TheQinghaiTibetPlateauistheregionwhereissensitivetotheglobalwarming.Theclimate
changesaffectalaspectsofplantsintheregionandthusaffecttheproductivityofalpinemeadow.The
opentopchamberswereusedtosimulatetheincreasingtemperature,andthefertilizerswithdifferentrati
osofnitratetoammoniumwereappliedintheplots.Thegasexchangeandchlorophylfluorescenceof
犛犪狌狊狊狌狉犲犪犽犪狋狅犮犺犪犲狋犲 Maximandtotalbiomassofthecommunityweredetermined.Theresultsshowed
thatnetphotosyntheticrateof犛.犽犪狋狅犮犺犪犲狋犲decreasedastheratiosofnitratetoammoniumincreased,but
stomatalconductanceincreased.Otherparametersofgasexchangeshowedirregularchanges.ΦPSIIreached
thepeakwhentheratioofnitratetoammoniumwas0%.Nonphotosynthesisquenchingincreasedasthe
ratiosofnitratetoammoniumincreased.Inthecommunitycontaining犛.犽犪狋狅犮犺犪犲狋犲,thetotalbiomass
reachedthepeakwhennitrateandammoniumwasequal.Altheresultssuggestedthatnitrogenfertilizers
ofdifferentratiosofnitratetoammonium mightaffectnetphotosyntheticrateof犛.犽犪狋狅犮犺犪犲狋犲andthe
communitybiomass.Nitrogenfertilizerapplicationisofsignificancetoincreaseproductivityofalpine
meadowinQinghaiTibetPlateau.
犓犲狔狑狅狉犱狊:Simulationoftemperatureincreasing;Gasexchange;Nitrogenformsratio;犛犪狌狊狊狌狉犲犪
犽犪狋狅犮犺犪犲狋犲Maxim.;TheQinghaiTibetPlateau
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Table1 Theratiosofdifferentnitrogenformsandappliedamount
o© Ratio/% ¢ºAppliedamount/g·m-2
N1(./0)
N1(Ammoniumsulphate)
N2(§/1)
N2(Sodiumnitrate)
N1(21.18%) N2(17%)
100 0 142 0
70 30 99.15 52.95
50 50 70.8 88.23
30 70 42.49 123.5
0 100 0 182
0 0 0 0
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犉狏/犉犿= (犉犿-犉0)/犉犿[24]
ΦPSII=(犉犿′-犉′)/犉犿′ [25]
狇犘 = (犉犿′-犉′)/(犉犿′-犉0′)[26]
狇犔=狇犘×犉0′/犉′[27]
犢(犖犗)=1/[犖犘犙+1+狇犔(犉犿/犉0-1)][27]
犢(犖犘犙)=1-ΦPSII-犢(犖犗)[27]
犈犜犚 =ΦPSII×犘犉犇犪×0.5[25]
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›[[1] YuC,ZhangY,ClausH,犲狋犪犾.Ecologicalandenvironmental
issuesfacedbyadevelopingTibet[J].EnvironmentalScience
andTechnology,2012,46(4):19791980
[2] BaiL,Cirendunzhu,Pengcuociren,犲狋犪犾.RapidwarminginTi
bet,China:publicperception,responseandcopingresources
inurbanLhasa[J/OL].EnvironHealth,2013,12(1):71.doi:
10.1186/1476069X1271
[3] YuH,XuJ,OkutoE,犲狋犪犾.Seasonalresponseofgrasslandsto
climatechangeontheTibetanPlateau[J/OL].PLoSOne,
2012,7(11):e49230.doi:10.1371/journal.pone.0049230
[4] HaoZ,JuQ,JiangW,犲狋犪犾.CharacteristicsandScenariosProjec
tionofClimateChangeontheTibetanPlateau[J/OL].TheScien
4311
!6# € ¡:…¿tvwÍ£¤¦w¥HohQ«¬­®iÓÔÕ¶ž·¸Gºlém
tificWorldJournal,2013,129793.doi:10.1155/2013/129793
[5] GaoJ,LiXL,CheungA,犲狋犪犾.Degradationofwetlandsonthe
QinghaiTibetPlateau:Acomparisonoftheeffectivenessof
threeindicators[J].JournalofMountainScience,2013,10(4):
658667
[6] HarrisRB.RangelanddegradationontheQinghaiTibetan
plateau:Areviewoftheevidenceofitsmagnitudeandcauses
[J].JournalofAridEnvironments,2010,74(1):112
[7] WenL,DongS,LiY,犲狋犪犾.Effectofdegradationintensityon
grasslandecosystemservicesinthealpineregionofQinghai
Tibetan Plateau,China[J/OL].PLOS One,2013,8(3):
e58432.doi:10.1371/journal.pone.0058432
[8] YangZ,GuoH,ZhangJ,犲狋犪犾.Stochasticanddeterministic
processestogetherdeterminealpinemeadowplantcommunity
compositionontheTibetanPlateau[J].Oecologia,2013,171
(4):495504
[9] WenL,DongS,LiY,犲狋犪犾.Theimpactoflanddegradationon
theCpoolsinalpinegrasslandsoftheQinghaiTibetPlateau
[J].PlantSoil,2013,368(12):329340
[10]LiuY,MuJ,NiklasKJ,犲狋犪犾.Globalwarmingreducesplant
reproductiveoutputfortemperatemultiinflorescencespecies
ontheTibetanplateau[J].NewPhytology,2012,195(2):427
436
[11]YuH,LuedelingE,XuJ.Winterandspringwarmingresultin
delayedspringphenologyontheTibetanPlateau[J].Proceed
ingsoftheNationalAcademyofSciencesoftheUnitedStates
ofAmerica,2010,07(51):2215122156
[12]ChenG,WuT.Responsesofpermafrosttoclimatechangeand
theirenvironmentalsignificance,QinghaiTibetPlateau[J/
OL].JournalofGeophysicalResearch:EarthSurface,2007,
112:F02S03.doi:10.1029/2006JF000631
[13]DuM,KawashimaS,YonemuraS,犲狋犪犾.Mutualinfluencebe
tweenhumanactivitiesandclimatechangeintheTibetanPlat
eauduringrecentyears[J].GlobalandPlanetaryChange,
2004,41(34):241249
[14]XinH.China'senvironmentalchalenges.Agreenfervorsweeps
theQinghaiTibetanPlateau[J].Science,2008,321(5889):663
665
[15]WangH,ZhouX,WanC,犲狋犪犾.Ecoenvironmentaldegradation
inthenortheasternmarginoftheQinghaiTibetanPlateauand
comprehensiveecologicalprotectionplanning[J].Environmen
talGeology,2008,55(5):11351147
[16]ChenXW,ZhangXS,LiBL.Thepossibleresponseoflife
zonesinChinaunderglobalclimatechange[J].Globaland
PlanetaryChange,2003,38(34):327337
[17]MenzelA,SparksTH,EstrelaN,犲狋犪犾.Europeanphonologi
calresponsetoclimatechangematchesthewarmingpattern
[J].GlobalChangeBiology,2006,12(10):19691976
[18]GaoY,ZhouX,WangQ,犲狋犪犾.Vegetationnetprimaryproduc
tivityanditsresponsetoclimatechangeduring20012008in
theTibetanPlateau[J].ScienceofTotalEnvironment,2013,
444:356362
[19]ZhaoD,WuS,YinY.Responsesofterrestrialecosystems'net
primaryproductivitytofutureregionalclimatechangeinChina
[J/OL].PLOSOne,2013,8(4):e60849.doi:10.1371/jour
nal.pone.0060849
[20]GaoQZ,WanYF,LiYE,犲狋犪犾.Grasslandnetprimarypro
ductivityanditsspatiotemporaldistributioninnorthernTibet:
astudywithCASAmodel[J].ChineseJournalAppliedEcolo
gy,2007,18(11):25262532
[21]FanJW,ShaoQQ,LiuJY,犲狋犪犾.Assessmentofeffectsofcli
matechangeandgrazingactivityongrasslandyieldinthe
ThreeRiversHeadwatersRegionofQinghaiTibetPlateau,
China[J].EnvironmentalMonitoringandAssessment,2010,
70(14):571584
[22]žŸ ,š¯_,›ëœ,¡.¡ªh&23.?–`a·¸G
&lém
[J].`?),2014,22(3):488493
[23]HenryGHR,MolauU.Tundraplantsandclimatechange:
theInternationalTundraExperiment (ITEX)[J].Global
ChangeBiology,1997,3(Suppl.1):19
[24]KitajimaM,ButlerW L.Quenchingofchlorophylfluores
cenceandprimaryphotochemistryinchloroplastsbydibromo
thymoquinone[J].BiochimicaetBiophysicaActa,1975,376
(1):105115
[25]GentyB,BriantaisJM,BakerNR.Therelationshipbetween
thequantum yieldofphotosyntheticelectrontransportand
quenchingofchlorophylfluorescence[J].BiochimicaetBio
physicaActa,1989,990(1):8792
[26]SchreiberU,SchliwaU,BilgerW.Continuousrecordingof
photochemicalandnonphotochemicalchlorophylfluorescence
quenchingwithanewtypeofmodulationfluorometer[J].
PhotosynthesisResearch,1986,10(1):5162
[27]KramerD M,JohnsonG,KiratsO,犲狋犪犾.Newfluorescence
parametersforthedeterminationofQAredoxstateandexcita
tionfluxes[J].PhotosynthesisResearch,2004,79(2):209218
[28]žŸ .³´wµ¯D9)Ö×l®¯¶¡¢[J].Ž)

,1999,16(4):444448
[29]BoxmanA W,RoelofsJG M.Someeffectsofnitrateversus
ammoniumnutritiononthenutrientfluxesin犘犻狀狌狊狊狔犾狏犲狊狋狉犻狊
seedlings.Effectsofmycorrhizalinfection[J].CanadianJour
nalofBotany,1988,66(6):10911097
[30]BassiriradH,GriffinKL,ReynoldsJF,犲狋犪犾.Changesin
rootNH+4 andNO3absorptionratesofloblolyandpondero
sapineinresponsetoCO2enrichment[J].PlantandSoil,
1997,190(1):19
[31]SchererH W,MacKownCT.Drymatteraccumulation,up
takeandchemicalcompositionoftobaccogrownwithdifferent
NsourcesattwolevelsofK[J].JournalofPlantNutrtion,
1987,10(1):1014
[32]MarshnerH.Mineralnutritionofhigherplants[M].New
York:AcademicPress,1990:211
[33]SunderhausS,DudkinaN V,JnschL,犲狋犪犾.Carbonicanhy
drasesubunitsformamatrixexposeddomainattachedtothe
membranearmofmitochondrialcomplexIinplants[J].Jour
nalofBiologicalChemistry,2006,281(10):64826488

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