額濟納旗胡楊樹干液流研究.pdf

1、內(nèi)蒙古農(nóng)業(yè)大學碩士學位論文額濟納旗胡楊樹干液流研究姓名：張翠霞申請學位級別：碩士專業(yè)：森林經(jīng)理學指導教師：張秋良常金寶20070501AStudyontheSapflowofPopuluseuphraticainEjinaCounty^bstractAppliedThermalDissipationSapwoodFlowVelocityProbe(TDP)，thedailychangeofthesapflowvelocityofPopu

2、luseuphraHcaweremeasuredsystematicallyatdifferentweathercondition(cloudyorclear)，differentdepthinthetrtmkanddifferentdireetiominthetrunkundertheconditionthattreegrownaturalmoughthesynchronousmeasurementofthetreephysiolog

3、yindexesandtheenvironmentfactors，theinfluencedegreeandresponsebytheoutsideenvironmentfactorsofaffectionthesapflowvelocitywereanalyzeddeeply，themechanismofinsideregulatedandtheoutsideinfluencefactorsoftranspirationweredis

4、played，thedailychange，seasonchangeandyearchangeofthetreebiologycharacteristicsandthemainenvironmentfactorsoftheinfluentialsapflowofPopuluseuphraticawerediscussedTheresultsshowedthat：thesapflowvelocityofeverychesttreeshow

5、edlow—highlowchanges，themaximumsapflowvelocityof50cmand29emch髑ltreesin25ramundercambium，themaximumsapflowvelocityof15cmchesttreesin15mmundercambium『；thesapflowvelocityofthesouthandwestinthetrunkmorehigherthentheeastandno

6、rth；thedailychangeandseasonchangeofthesapflowvelocityassociatedwiththeTa，RH，PRA，VPDandWS，butthemainfunctionWaSdifferentunderthedifferenttenditions，WeCanchoosethebestmodelinordertealizetheinstantestimationofsinglewoodwate

7、rconsumption，theregressionequationofthedailychangesapflowrespondtotheenvironmentfactorsofPopuluseuphraticaindifferentweathereonditionanddifferentSeasonwerebuilt；Weusedtheregressionequationofsapflowwithchestdiameter，treeh

8、igh，treehatrangeandsapareatealizethecalingupoftreetranspirationandwaterconsumptionthroughthesingletreetothewoodThetheoriesfoundationwereprovidedinordertoannouucetothemechanismofecosystemusingwaterandthecontinuousdevelopm

9、entofEjinaoasisinaflertime，thescientificbaseswereprovidedinordertoprotectandrecovertheoasisecosystemsystemKeywards：Populuseuphratica；Thermaldissipationmethod：Stemsap加lI，：Scalingup：EnvironmentalfactorsDirettedby：ProfZHANG