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Relationship between Soil Respiration and Plant Belowground Biomass under Different Stocking Rates in Stipa breviflora Desert Steppe

短花针茅荒漠草原不同载畜率的土壤呼吸与植物地下生物量的关系



全 文 :!23" !3#
 Vol.23  No.3
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ACTA AGRESTIA SINICA
   2015$  5%
  May.  2015
犱狅犻:10.11733/j.issn.10070435.2015.03.008
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犚犲犾犪狋犻狅狀狊犺犻狆犫犲狋狑犲犲狀犛狅犻犾犚犲狊狆犻狉犪狋犻狅狀犪狀犱犘犾犪狀狋犅犲犾狅狑犵狉狅狌狀犱犅犻狅犿犪狊狊狌狀犱犲狉
犇犻犳犳犲狉犲狀狋犛狋狅犮犽犻狀犵犚犪狋犲狊犻狀犛狋犻狆犪犫狉犲狏犻犳犾狅狉犪犇犲狊犲狉狋犛狋犲狆狆犲
ZHANGXinjie1,HANGuodong1,DINGHaijun1,2,ZHANGRuiyang1,WANGZhongwu1
(1.ColegeofEcologyandEnvironmentalScience,InnerMongoliaAgriculturalUniversity,Hohhot,InnerMongolia010019,China;
2.InstituteofGrassland,InnerMongoliaAcademyofAgriculturalandAnimalHusbandrySciences,Hohhot,InnerMongolia010031,China)
犃犫狊狋狉犪犮狋:Li8100opencircuitsoilcarbonfluxmeasuringsystemwasusedtomeasurethesoilrespiration
rateoffourstockingratesduringgrowingperiods(May-October)inthisstudy.Meanwhile,soilcores
werecolectedtomeasurecumulativeplantbelowgroundbiomassandnetrootbiomassattheendofAugust
inordertocomparetheeffectofdifferentstockingratesonsoilrespiration,cumulativeplantbelowground
biomassandnetrootbiomass,tounderstandtherelationshipsbetweensoilrespirationingrowingseason,
soilrespirationinAugustandcumulativeplantbelowgroundbiomass,netrootbiomass,respectively.The
resultsshowedasfolows:cumulativeplantbelowgroundbiomassandrootgrowthreducedwiththein
creaseofstockingrate,therewasnosignificanteffectonsoilrespirationamongdifferentstockingrates.
Soilrespirationduringgrowingseasonwassignificantlypositivelinearcorrelationwithcumulativeplant
belowgroundbiomass,andsoilrespirationinAugustwassignificantlypositivelinearcorrelationwithnet
rootbiomass.Soilrespirationwassignificantlyinfluencedbyplantbelowgroundbiomass.Newrootsstar
tedgrowingatthebeginningofgrowingseason;andsoilrespirationmostlydependedonoldroots.When
newrootbiomassincreased,soilrespirationrateincreasedrapidlyandreachedthemaximumvalueinsum
mer,theydeterminedthemajorsoilrespirationatthisperiod.
犓犲狔狑狅狉犱狊:Soilrespiration;Cumulativepantbelowgroundbiomass;Netrootbiomass;Stockingrate
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Table1 Effectofstockingrateonsoilrespirationrate
μmolCO2·m
-2·s-1
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time
‹Ó*
Nograzing
}eÓ*
Light
grazing
8eÓ*
Moderate
grazing
~eÓ*
Heavy
grazing
ñ·†
Growing
season
0.84±0.23A0.76±0.18A0.74±0.17A0.63±0.14A
8%
August
1.67±0.41A1.71±0.47A1.66±0.52A1.56±0.41A
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Note:thesamelettersmeannosignificantdifferencewithindif
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Fig.1 Theresponseofcumulativeplantbelowground
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[1] cfX,‰J˜,–ðó.CúkM,ë÷M,¶2p]û
4ñ&"ItSÌÍ
[C]∥8¸-./åhi]ûñòù
úˆSE.]ûñòùúÌÍ(!2Ê).„À:-.qÁÂ,
1988:122131
[2] KL,AÓÌ,cµ¯.Ó*/e<]44ñ&"ÕÖI¸
åÌÍ5“
[J].]÷¶)*,2012(11):5762
[3] §Á˜,3Ղ.nM]ûD\Y]]4Ó*Ñh–ÆÎ|I
ÌÍ
[J].­¤ñò.¸,1995,6(3):277281
[4] –[N.Y]]4žŸ<Ó*jéêI.­[J].8¸]4,
1995(1):15
[5] 3ÊL,3nç.‹ŒÓ*/eZA,õ]cdeIMòv
îñQñ&"J{j¡
[J].ž&ñò.¸,2002,26(4):435
440
[6] è)g,§".‹ŒÓ*Ë5ø$ñXE]/Ò=2]4!
¥ññÍ.ÌÍ
[J].8¸]4,1998(2):1216
[7] OP³,Šº?,§¸[,.YB„ñ&¶ˆùÚ0x¤ÕÖ
ürJK
[J].­¤ñò.¸,2005,16(8):15471552
[8] 33Û,µg¸,§|­,.W>’‘¥AÓ*]û™š8
ˆùÚ0äYB²Ú0tuIfz3¼
[J].ž&ñò.¸,
2002,26(1):2932
[9] SQ[,–RS.YBÚ08ˆù¶„ñ&Ú0I@JÖ³¶
­¤
[J].4þ-.5“,2003,18(4):597602
[10]WangXG,ZhuB,WangYQ,犲狋犪犾.Fieldmeasuresofthe
contributionofrootrespirationtosoilrespirationinanalder
andcypressmixedplantationbytwomethods:trenchingmeth
odandrootbiomassregressionmethod[J].EuropeanJournal
ofForestResearch,2008,127(1):285291
[11]TufekciogluA,RaichJW,IsenhartTM,犲狋犪犾.Finerootdy
namics,coarserootbiomass,rootdistribution,andsoilrespi
rationinamultispeciesriparianbufferinCentralIowa,USA
[J].AgroforestrySystems,1999,44(1):163174
[12]U8Ä,›>Ó,ÄXu,.8¸]44ñ&"ÌÍ5“
[J].ñò. ¯,2005,24(9):10951101
[13]LiYQ,XuM,SunOJ,犲狋犪犾.Effectsofrootandlitterexclu
siononsoilCO2effluxandmicrobialbiomassinwettropical
forests[J].SoilBiologyandBiochemistry,2004,36(9):2111
2114
[14]ý?€,§›T,‰´,.HLMÀÁ]û4ñ&"<
‹Œ/eÓ*IÖ­
[J].åhi®÷à..¸,2010,31(4):
101104
[15]‰ÒU,Ïä.8¸]4ñòùúÄ1ÌÍ5“[J].8¸
]4.¸
,2011,33(4):99110
[16]–®¥,µ¸î,§˜ë.‹Œ”)æÚ0IÕÖ
[J].ñò(.¸,2014,23(5):743748
[17]LeCainDR,MorganJA,SchumanGE,犲狋犪犾.Carbonex
changeandspeciescompositionofgrazedpasturesandexclo
suresintheshortgrasssteppeofColorado[J].Agriculture,E
cosystemsandEnvironment,2002,93(13):421435
[18]JohnsonLC,MatchettJR.Fireandgrazingregulatebelow
groundprocessesintalgrassprairie[J].Ecology,2001,82
(12):33773389
[19]KangX,HaoY,CuiX,犲狋犪犾.EffectsofgrazingonCO2bal
anceinasemiaridsteppe:fieldobservationsandmodeling[J].
JournalofSoilsandSediments,2013,13(6):10121023
[20]WaynePoleyH,FrankAB,SanabriaJ,犲狋犪犾.Interannual
variabilityincarbondioxidefluxesandfluxclimaterelation
shipsongrazedandungrazednorthernmixedgrassprairie[J].
GlobalChangeBiology,2008,14(7):16201632
[21]PuchetaE,BonamiciI,CabidoM,犲狋犪犾.Belowgroundbio
784
! " # $ !23"
massandproductivityofagrazedsiteandaneighbouringun
grazedexclosureinagrasslandincentralArgentina[J].Aus
tralEcology,2004,29(2):201208
[22]GaoYZ,GieseM,LinS,犲狋犪犾.Belowgroundnetprimary
productivityandbiomassalocationofagrasslandinInner
Mongoliaisaffectedbygrazingintensity[J].PlantandSoil,
2008,307(1/2):4150
[23]RuedaM,ReboloS,RodríguezMA.Habitatproductivityin
fluencesrootmassverticaldistributioningrazedMediterranean
ecosystems[J].ActaOecologica,2010,36(4):377382
[24]FrankDA,KunsM M,GuidoDR.Consumercontrolof
grasslandplantproduction[J].Ecology,2002,83(3):602606
[25]MartinD,ChambersJ.Restorationofriparianmeadowsde
gradedbylivestockgrazing:aboveandbelowgroundresponses
[J].PlantEcology,2002,163(1):7791
[26]WangH,LiuSR,WangJX,犲狋犪犾.Effectsoftreespecies
mixtureonsoilorganiccarbonstocksandgreenhousegasflu
xesinsubtropicalplantationsinChina[J].ForestEcologyand
Management,2013,300:413
[27]NiuSL,WuMY,HanY,犲狋犪犾.Watermediatedresponses
ofecosystemcarbonfluxestoclimaticchangeinatemperate
steppe[J].NewPhytologist,2008,177(1):209219
[28]KurtSP,AndrewJB,JohnSK,犲狋犪犾.Soilrespiration,root
biomass,androotturnoverfolowinglongtermexposureof
northernforeststoelevatedatmosphericCO2andtropospheric
O3[J].NewPhytologist,2008,180(1):153161

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