淹水對15個樹種苗木生長和形態(tài)特征的影響.pdf

1、南京林業(yè)大學(xué)碩士學(xué)位論文淹水對15個樹種苗木生長和形態(tài)特征的影響姓名：劉春風(fēng)申請學(xué)位級別：碩士專業(yè)：森林培育指導(dǎo)教師：曹福亮20090601Effectsofartificialfloodingonthegrowthandmorphologicalcharacteristiesof15treespeciesseedlingsAbstractThispaperstudiedtheresponseof15speciestomorphdogi

2、calcharacteristics，growthanatomicalstructure，photosynthesis，hormoneunderdifferentwaterstresssimulatingfieldexperiments，someresultswereasfollows：1Waterloggingstresscausedtheheight，grounddiameterbiomassoftheseedlingexceptf

3、ors口l訌babvlonicadeclineToacertainextent。waterloggingindexandleafareaindexreflectedthenatureofwaterloggingtoleranceofspecies2ByusingtheparaffinsectionmethodweobservedthatSa溉babvlonicaandTaxodiumdistichumformatedtheleavess

4、temsrootcortexroadconnected也eaircortexofleaves，adventitiousrootsofundergroundstemsofSapiumsebfferumformatedlessaerenchymaandcortexofrootsandstemsisnotobservedsignificantchangesAnatomicalstructureofCamptothecaeacuminatais

5、similarticeThewayofaerenchymaformationislysigenousaerenchyma3Underwaterloggingstress，exceptthatPn、Gsofthe鼬融babvlonicawereslighflyhigherthantheCkPn、GsoftheseedlingdeclinedtodifferentdegreesThesharpdeclineofPnWasresultofde

6、clineofGsandphotosyntheticcapacity4ThereWasnosiginificanttrendregardingchangesofhormonecontentinleavesIncreasingABAcontentinleavesinhibitedtheineaseinGA，butithaddifferenteffectonL認contentinleavesofdifferentspecies5Bythep

7、rincipalcomponentandclusteranalysisbasedon17parameters，Parameterssuchasbiomass，seedlingheight，grounddiameterleafareaindex，waterlogginginjuryindex，SOD，ASAPOD，ASA，solubleprotein，prolineLAA，GAcontentWasselectedfortheclassif

8、icationFourteenspeciesweredividedintomostpreventedwaterloggingtype，preventedwaterloggingtype，mediumpreventedwaterloggingtypeandnonpreventedwaterloggingtypeFourteenfloodingspecieswereranked舔follows：Sa溉babvlonicaMetasequoi

9、aglyptosteoboidesTaxodiumdistichumPterocaryastenopteraFraxinus幽伽8，坫捃BischofiapolycarpaPopulusdeltoidesLiquidambarformosanaSapiumsebiferumCarayaillinoensisCamptothecaeacuminataNyssasinensisPistaciachinensisGinkgobilobaKey