廣西大冠沙兩種生長型白骨壤葉片衰老過程中的元素動態(tài).pdf

1、廈門大學(xué)碩士學(xué)位論文廣西大冠沙兩種生長型白骨壤葉片衰老過程中的元素動態(tài)姓名：任興偉申請學(xué)位級別：碩士專業(yè)：植物學(xué)指導(dǎo)教師：林益明20090401ABSTRACT彳y娩翮勿療斌西砑atDagu鋤shanGu鋤g)【iPro、，incew私diVidedintotwogrowtllfornls：adwarff0咖with仃∞heightofbelow15m，鋤datr獅sitionf0咖with仃Ieeheightf如m15mto2matm

2、aturi妙SeaSonalch卸gesintheconcen刪ionsofN砧K，C毛M蚤鋤dCIofmature卸d∞neScentIeavesoftwogrow啦fomswerestudiedMeanWhile，theK瓜aratio鋤dreso印tione伍ciency(RE)ofelementSdringleaf∞nescencewc艙als0diScussedinthispaper(1)Elementc伽ce曲斌i冊of么撇

3、積凇leavesof鉚og麟砒f0硼satDagu觚shafollo讞Idtheorder：ClNaKMgCaN釓Cl，K，鋤dMgfollowedthesimilar∞asonalpattem，andwerehigherinspring觚dsummerthaninautumn翻dwinter，butCafluctuatedwithoutsignifieantse嬲0nalpa技em(2)Kconcentrationinthe彳肌口砌塒

4、leavesofdWarfgrowthf0冊(t陀eheightofbelow15matmaturit)r)w嬲lo、verth鋤thatofmet姍sitionform(treehei曲t蠡0m15mt02matmaturi媯，K∞ncentrationdec豫峪edduringleafsenescencefor咖gro、Ⅳthfbms，indicatingKw鶴resorbedfromseneScentleavesTherewasn

5、osigniflcantdi腩陀nceinN島Mg，鋤dClconcentrationsbet、veentwogrowthf0姍sCaconcent豫tioninthe么嬲口—?？贗ea_Vesofdwarfgr0、礬hfomlw嬲lowerthanthatofthetmnsitionfonn；Kconcentrationand約NaratioinmatureleaVesofthetransitionfo肌、Va峪higherth鋤th

6、o∞ofthed耐fo咖(3)Theamountofinorganic0SmoDegulatorint量lematu他leaVesofthetransitionfo哪w嬲hi曲erthanthatofthedwarffo嘰，butnosignific鋤tdi腑renceoftheamountofino唱anicosmoregulatorinthesenescentleaVeswaSfoundbeMeentwo罌。owthfornls；T

7、heino瑪anicosmoreguIatorconcentrationsinthem咖reandsenescentleaVeSoftwogr0、)l，th行’omsincreasedinthespring，andrearchthehigheStinsummer，anddecreasedtheIowestintheautumn(4)Reso叩tionemcienCyofKwaspositiVe，whilereso叩tionemcienc

8、iesofNa，Cl，Ca，andMgwerenegatiVe；Reso叩tione銜ciencyofKofthed、Varfgro叭hfornlwashigherthanthatofthetransitionfonn，nosignificantdi服鵬ncewasfoundforreso叩tione銜ciencyofNa，CJ，CaandMgbetween觚ogro叭hforms(5)AsforK，Mg，thereweresignif