Foliar Nitrogen (N), Phosphorus (P) Dynamics, and Foliar Resorption of Corylus avellana var. avellana

Ekoloji Dergisi

Sevda Yalcin¹  Hamdi Guray KUTBAY¹  Tugba Bayrak Ozbucak¹  Dudu Kilic¹ 

关键词: Corylus avellana var. avellana;    nitrogen;    phosphorus;    resorption efficiency;    resorption proficiency;   

DOI  :  

来源: Cevre Koruma ve Arastirma Vakfi

【 摘 要 】

Corylusavellanavar.avellana(Corylaceae)hasawidespreaddistributionintheCentralBlackSeaRegionofTurkeyandisveryvaluableinthefoodindustryandplaysanimportantroleintheeconomyoftheBlackSeaRegionofTurkey.Inthisstudy,nitrogen(N)andphosphorus(P)concentrationsalongatopographicalgradient(fromsealevelto550m)andthroughthegrowingseason(fromApriltoOctober)wereinvestigated.Inadditiontothis,foliarresorptionwasalsostudiedasresorptionefficiency(RE)andresorptionproficiency(RP)whichisdefinedastheproportionofnutrientswithdrawnfromleavesandtheNandPconcentrationsinsenescedleaves,respectively.StatisticallysignificantdifferenceswerenotfoundwithrespecttoleafNconcentrationandSLAduringthegrowingseasonalthoughleafPconcentration,leafN/PratioandSLAweresignificantlychangedduringthegrowingseason.ExceptforNRE,PRE,ARP,andPRPalloftheleaftraitsweresignificantlychangedalongthetopographicgradient.TheN/PratiowhichisanindicatorofN-andP-limitationdecreasedduringthegrowingseasonandalongthetopographicgradient.TheNandPconcentrationsinthesenescentleavesofC.avellanawasbelow50μgcm-2and3μgcm-2,respectivelyalongthetopographicgradientandthisspeciesisNandP-proficientaccordingtothethresholdvalues.Soilpropertiesalongthetopographicgradientalsochanged.

【 授权许可】

Unknown