紅外氣體分析法測(cè)定單葉光合速率常見問題及誤差分析.pdf

1、中國農(nóng)業(yè)大學(xué)碩士學(xué)位論文紅外氣體分析法測(cè)定單葉光合速率常見問題及誤差分析姓名：黃彬香申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：氣象學(xué)指導(dǎo)教師：施生錦20030601SomequestionsandErrorAnalysisaboutMeasurementofGasExchangeinLeafPhotosyntheticRateAbs仃actToanalyzethequestionsanderrorsoccurredinmeasuringtheleafPh

2、otosyntheticrateusingGasexchange，instrumentalerrorobservationerrorandbiologyerrorintheUSeofportablephotosynthesissystemwerecomputedandanalyzedTheresultsshowthatinstrumentalerrorinopensystemiSmorethan3％ThemainelTorisowing

3、toC02analyzerandflowmeterAndinstrumentalerrorinclosedsystemismorettlan15％ThemainerrorisowingtoC02analyzerErrorisdecidedinthelevelofphotosynthesisbothofthemComparatively，theinstrumenterrorofopensystemisbiggerthanthatofclo

4、sedsystemespeciallyunderthelowerphotosynthesisFurthermore，choosingtherightleafchamberandthereasonablemeasurementofleafareaisimportantespeciallyTheerrorscausedbyenvironmentfactorsduringthecomparablemeasurementofleafphotos

5、ynthesisarebigespeciallyinthemorningandeveningandincreaserapidlyalongwithextensionofthemetricaldurationTheerrorcausedbythechangeofradiationismorethan40％inthemorningandeveningandislessthan5％intheresttimeTheerrorcausedbyth

6、echangeoftemperaturefluctuatesobviouslyfrom20％to40％Butitislessthan10％about8antand14pmTheerrorcausedbythechangeofC02concentrationisrelativesteadyfrom10％to20％Inonewordtheerrorcausedbyenvironmentfactorsfrom8amto14pmislessan

7、dmoresteadythaninothertimeButtheerrorscausedbychangeofenvironmentfactorsinshorttimeislessthan5％Theerrorcausedbydifferentpartofoneleafisfrom10％to40％andbiggerthanthatcausedbydifferentleavesWhenthechangeofradiationenvironme

8、nthasinstantaneouschange，thePhotosyntheticratecantreachtheratethatitshouldbeinthechangedsituationThatiscalledthephotoperiodicinductionUsuallythetimeofthephotopedodieinductionisfrom3minuteto8minuteTheerrorcausedbythephoto

9、periodicinductionchangesalongwiththeinitiatoryandterminativeradiationlevelAndtheeffectofPhotosyntheticoscillationsshouldbeemphasizedinfastmeasurementofphotosynthesisKeywords：GasexchangeLeafPhotosyntheticRateErrorAnabq虹Il