采煤沉陷對典型草原13種植物有性繁殖特性的影響.pdf

1、分類號Q94學(xué)校代碼10129UDC502學(xué)號2012202001采煤沉陷對典型草原采煤沉陷對典型草原13種植物有性繁殖植物有性繁殖特性特性的影響的影響TheEffectofMiningSubsidenceonReproductiveacteristicsof13PlantSpeciesinTypicalSteppeCommunity申請人：包麗穎學(xué)科門類：理學(xué)學(xué)科專業(yè)：植物學(xué)研究方向：植物資源保護(hù)與利用指導(dǎo)教師：賀曉教授論文提交日期：

2、二〇一五年六月TheEffectofMiningSubsidenceonReproductiveacteristicsof13PlantSpeciesinTypicalSteppeCommunityAbstractTheeffectsofcoalminingsubsidenceonreproductiveacteristicsof13plantspeciesinshenmucountyShanxiProvincewerestudieds

3、eedsetting1000grainweightseedgerminationacteristicswerecomparedbetweencoalminingsubsidenceareassurroundingcontrolareas.Thisstudyaimedtoprovidetheeffectsofminingsubsidenceonreproductiveacteristicstoprovidebasisthepractice

4、explationfvegetationrestationincoalminingsubsidenceareas.Theresultsshowedthat:ThesettingrateofAstragalusmelilotoideisbetween30%~50%，Stipabungeanaisbetween30%～80%，Stipabreviflaisbetween15%～50%，Caryopterismongolicaisbetwee

5、n20%～40%，thesettingrateofDracocephalummoldavicacanreach90%.Ingeneralthesettingratesofperennialplantsarelower.Thesubsidencemadelittleinfluenceontheplantsatthestudyarea.Howeverthehabitatconditionmadelargedifferencesonthese

6、ttingrate.Thousseedweightsofmajityplantsshowedlittledifferencewiththeinfluenceofcoalminingsubsidence.ButthethousseedweightofStipabrevifladecreasedsignificantly.BecauseoftheStipabreviflaisedificatyatthestudyarea，thedecrea

7、seofitsthousseedweightcouldmakeadverseeffectsontherenenerationofnativegrasslvegetationatthestudyarea.Theseedgerminationsofmajityplantsshowedlittledifferencewiththeinfluenceofsubsidence，accdingtothecomparisonanalysisofger

8、minationpotential，germinationrate，germinationindexvigindex.ButthegerminationpotentialgerminationrateofCaryopterismongolicaweregenerallygreateratnonsubsidenceareas.Keywds:Miningsubsidence；Typicalgrassl；Seedsettingrate；100