內(nèi)蒙古烏拉特中旗草原退化原因與修復(fù)途徑研究.pdf

1、中國農(nóng)業(yè)科學(xué)院碩士學(xué)位論文內(nèi)蒙古烏拉特中旗草原退化原因與修復(fù)途徑研究姓名：武志杰申請學(xué)位級別：碩士專業(yè)：農(nóng)業(yè)推廣農(nóng)村與區(qū)域發(fā)展指導(dǎo)教師：杜建材20071201AbstractThereasonableuseofgrasslandresourcesisthebasisforthedevelopmentofgrasslandlivestockhusbandryWulatezhongqiisoneofthirtythreeimportantl

2、ivestockhusbandryregionsinInnerMongoliaForalongtime，naturalfactors，overgrazingandkindsofunreasonableoperatingactivitiescauseddegradationofthegrasslandanddeteriorationoftheecologicalenvironment’thelocalgrasslandlivestockh

3、usbandrywerefacingseverechallengesInthispaper，accordingtothechangesofvegetationinWulatezhongqidesertgrasslandduringthepast25years，thereasonsforthedegradationofgrasslandwereanalyzedThroughthecomparingtheobservmiondataof3t

4、ypicallocationmonitoringsampleplotslengthwaysasthesequenceoftime，theecologicalcharacteristicsofWulatezhongqidesertgrassland，foragemonthyearlystorageaswellastheirrelationshipswiththewatertemperaturewereacquiredOnthisbasis

5、，theeffectsofsomeinteriorfactorssuchasthewaterheatandlivestockandsomeexteriorfactorssuchaspopulationpoliciesandmanagementsystemsonthedegradationofgrasslandwerefurtheranalyzedAtthesametime，accordingtothecharacteristicsoft

6、hevegetationgrowthandthelawsofanimals’requirements，theeffectivewaystopromotetherestorationofgrasslandvegetationwasproposedTheresultsshowedthattheenvironmentofWulatezhongqidesertgrasslandchangedalotoverthepast25years，thec

7、ontinualriseoftheaveragetemperatureWasthemostimportantexhibitionThenaturalsuccessionofvegetationwastheinevitableresultofnaturalfactors，alsothelawbywhichthecommunitiesdevelopsthemselvesDuringtheprocessofsuccession，thespec

8、iesinthecommunitiesmaintainedtheirbalanceandstabilitywiththeabilityofrestoringthemselvesDegradationofgrasslandWasthereversedsuccessionofcommunitycausedbytheinteractionbetweennaturalfactorsandhumanfactors，theselfrestoring

9、abilityofdegradedgrasslanddeclined，everldisappearedOriginalvegetationWasthedescriptiontotheplantcommunityofgrasslandwhichalwayskeptstableoverthepastseveraldecadesWiththeaccelerationofthepaceofglobalindustrializationtheat

10、mospherewasinfluencedmoreandmoreseriouslythecycleofchangesWasshortenWiththedevelopmentofindustrialization，itwasdifficulttestorethehumans’livingspacetofarmingagewithoutcontaminationAlso，itwasdifficulttocomebacktothesituat

11、ionbeforefi塒orseventyyears，thepresentnaturalgrasslandinbalancehaditsspecialattributeThemostprominentrepresentationsofgrasslanddegradationwerethereductionofspeciesandthedeclinationofdominantspecies，humanplayedallimportant