大青山陽坡幾種落葉樹種的水分生理及其耐旱性的研究.pdf

1、內(nèi)蒙古農(nóng)業(yè)大學(xué)碩士學(xué)位論文大青山陽坡幾種落葉樹種的水分生理及其耐旱性的研究姓名：毛斌申請學(xué)位級別：碩士專業(yè)：森林培育指導(dǎo)教師：田有亮20090501TheResearchontheWaterPhysiologicalandDroughtToleranceofafewHardwoodSpecificinSunnySlopeMountainofDaqingAbstractThenetphotosyntheticrate，transpirat

2、ionrate，waterpotentialandsaturationdeficItandtheircorrelationofbranchoftenkindstreessuchasLiaotungensis，tecwerestuiedindifferentdehydrationbyPlantphotosynthesismeterandpressurechamberphysiologicalindicatorsofwatersuchasa

3、ttheinitiallosspointofthetugorPhysiologicalindicatorsofwatersuchasattheinitiallosspointoftheturgor(7cp)，etcweremensuratedbyPVtechnologytocomparethedroughttoleranceofthosebeingtestedfleesTheresultsshowedasfollow：(1)Accord

4、ingtonp，thedroughttoleranceofbeingtestedtreeswereevaluatedThosefleescanbesortedfourgroupsTheorderWasTiliamongolicaMaxim，Populusdavidiana，WeigelaFlorida‘Foliiapurpureis’，Acernegundo‘Variegatum’piraeasalicifoliaAcernegundo

5、‘Aureo—marginatum’，AcerginnalaMaxim，Quercusliaotungens括Koidz4cernegundo‘KellysGold’，Ostryopsisdavidiana(fromweaktostrong)(2)Theresultofcorrelationamongphotosyntheticrate，Transpirationrate，stomatalconductanceandSaturation

6、defichshowedthatphotosyntheticrate，TranspirationrateandStomatalconductancealldeclined、ⅣitllSaturationdeficitincreasingtheresultCanbeshowedbyy=ab(1EXP(kx))andy=k／(1電lEⅫ(一bx))ThevalueoftheflowofwaterthatNetphotosyntheticis

7、0iscalledPotentialcompensationpoiIltofNetphotosyntheticrate(vnpc)ThemoreynpcWaslarge，themoreadatabilityoftheplanttoDroughtstresswasstrongTheorderoftheadaptabilityofthebeingtestedfleestoDroughtstressWasTmongolicaMaxdm。Pop

8、ulusdavidianaWeigelaflriaa‘Foliiapurpureis’Acernegundo‘Variegatum’點piraeasalicflia4cernegundo‘Aureo—marginatum’4cerginnalaMaxim，QuercusliaotungensisKoidz，Acernegundo‘KellysGoldOstryopsisdavidiantt(3)Theparametersoftreesp

9、eciesgotfromthePVcurve，differentwaterstattmoftherelationshipbetweenphotosyntheticrateandtranspirationrateindicatorsofcharactcfisticsof砷，ROW尢p，Turgorandleafwaterpotentialinthelinearequationbvalue，thecellelasticmodulus(鋤ax

10、)，absolutewaterpotentialthatnetphotosyntheticisequaltozero(waterpotentialcompensationpo硫、Irnpe)andrelativemaximumrateofchangeof廿anspirationrate(x0wereselectedasthemainindexestoanalysisofsubordinatefunetionbyanalyzingchar