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Effects of Astragalus variabilis and Oxytropis glabra on the Soil Properties of Desert Grassland

变异黄芪和小花棘豆对荒漠草地土壤性状的影响



全 文 :!23" !3#
 Vol.23  No.3
! " # $
ACTA AGRESTIA SINICA
   2015$  5%
  May.  2015
犱狅犻:10.11733/j.issn.10070435.2015.03.006
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(1973),Å,>„–„§,ÊË,ŒÌÍÎ,mVÏР]-.jž&ñ5ñò.ÌÍ,Email:qinghaiw@sina.com;:
6x×Authorforcorrespondence,Email:wujuying@grassenv.com
67

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犈犳犳犲犮狋狊狅犳犃狊狋狉犪犵犪犾狌狊狏犪狉犻犪犫犻犾犻狊犪狀犱犗狓狔狋狉狅狆犻狊犵犾犪犫狉犪狅狀狋犺犲犛狅犻犾
犘狉狅狆犲狉狋犻犲狊狅犳犇犲狊犲狉狋犌狉犪狊狊犾犪狀犱
WANG Qinghai1,PANGZhuo1,LICui1,WUJuying1,DANengtai2,WANGDejun3,MAQingcheng4
(1.BeijingResearch&DevelopmentCenterforGrassandEnvironment,BeijingAcademyofAgricultureandForestrySciences,
Beijing100097,China;2.VeterinaryWorkstationofAlashanZuoqi,Alashan,InnerMongolia750300,China;
3.TengriAnimalHealthSupervisionStation,Tengri,AlashanZuoqi,InnerMongolia751799,China;
4.JilantaiAnimalHealthSupervisionStation,Jilantai,AlashanZuoqi,InnerMongolia750333,China)
犃犫狊狋狉犪犮狋:犃狊狋狉犪犵犪犾狌狊狏犪狉犻犪犫犻犾犻狊and犗狓狔狋狉狅狆犻狊犵犾犪犫狉犪arethemostpoisonousweedsinInnerMongolia,
andtheydoahugedamageinlocallivestockindustry.Inordertodeterminetheeffectsoflocoweedoccur
renceonthesoilpropertiesof犃.狏犪狉犻犪犫犻犾犻狊and犗.犵犾犪犫狉犪habitatsindesertsteppe,soilphysicaland
chemicalpropertiesinoccurrenceandnonoccurrenceplotsweremeasuredbyfieldsamplesandindoorana
lyses.Resultsshowedthattherewasnosignificantdifferenceinsoiltexture,porosity,watercontentand
bulkdensitybetweenoccurrenceplotsandcontrolplotsofbothlocoweeds,whereasthesoilalkalihydro
lyzablenitrogen(N)contentsofoccurrenceplotssignificantlyincreasedthatofcomparedcontrolplots.
Additionaly,theoccurrenceplotsof犗.犵犾犪犫狉犪exhibitedtheincreaseofavailablephosphorus(P)andthe
decreaseofavailablepotassium(K).Thoughboth犃.狏犪狉犻犪犫犻犾犻狊and犗.犵犾犪犫狉犪aredistributedinthedes
ertgrasslandofTengritowninAlashanZuoqi,thesoilpropertiesoftheirhabitatshavesignificantdiffer
ence.犃.狏犪狉犻犪犫犻犾犻狊growsinthesoilwithhighersandcontentthan犗.犵犾犪犫狉犪,butthesoilwater,alkali
hydrolyzableN,availableP,availableK,organicmattercontentsandpHvalueof犃.狏犪狉犻犪犫犻犾犻狊habitat
aresignificantlylowerthanthatof犗.犵犾犪犫狉犪.Both犃.狏犪狉犻犪犫犻犾犻狊and犗.犵犾犪犫狉犪donotcausethenotable
changesofsoilphysicalproperties.Comparedwith犗.犵犾犪犫狉犪weeds,犃.狏犪狉犻犪犫犻犾犻狊weedshavestrongera
daptabilitytoenvironmentalstressandconsiderablepotentialforfuturespreadimplyingmoreseriousdam
agetothelivestockindustryofdesertgrassland.
犓犲狔狑狅狉犱狊:Locoweed;Soilproperty;Desertgrassland
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Table1 Calculationsbymodifiedempiricallogisticgrowthmodelofsoilsin犃.狏犪狉犻犪犫犻犾犻and犗.犵犾犪犫狉犪habitats
L]
Locoweedspecies
Ë5
Treatment
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狌 犮
½ˆùG
犚2
œ‹ñ

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犃.狏犪狉犻犪犫犻犾犻
’ñ@
Occurrenceplot
0.1783 0.5709 0.9222 0.0397
d’ñ@
Controlplot
0.2978 0.4621 0.8252 0.0916
4L:;
犗.犵犾犪犫狉犪
’ñ@
Occurrenceplot
0.0760 0.7443 0.9713 0.0145
d’ñ@
Controlplot
0.0667 0.7550 0.9686 0.0158
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Fig.1 Cumulativedistributionofsoilparticlesizein犗.
犵犾犪犫狉犪and犃.狏犪狉犻犪犫犻犾犻狊habitats
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