湖泊沉積物鐵鋁對磷賦存形態(tài)及其轉(zhuǎn)化的影響.pdf

1、東北農(nóng)業(yè)大學(xué)碩士學(xué)位論文湖泊沉積物鐵鋁對磷賦存形態(tài)及其轉(zhuǎn)化的影響姓名：王振華申請學(xué)位級別：碩士專業(yè)：農(nóng)業(yè)資源與環(huán)境；植物營養(yǎng)學(xué)指導(dǎo)教師：劉元英20120620Abstract曼!曼鼉曼!!!曼曼豈詈曼!曼!曼曼曼曼曼!曼曼皇蘭曼!鼉皇曼!曼皇曼曼曼鼉苧曼曼曼曼曼!曼曼曼皂曼曼量曼曼曼量皇曼曼蘭!曼曼毫!曼曼皇皇!暑!EffectsofFeandA1onPhosphorusFractions，TransformationintheSedi

2、mentsofLakesAbstractAsequentialextractionmethodwasusedtostudytheoccurrencecharacteristicsoflakesedimentalphosphorusanddiscusstheinfluenceofironandaluminumonphosphoruscontentandoccurrencecharacteristicsinthesedimentsoflak

3、es，whichwasindepthanalysedindifferentLakesregion(theYunnan—GuizhouPlateauandtheeasternplainsofLakes)，differenttypesoflakes(urbanlakes，aquaculturelakesetc)，especiallyinlakesofdifferenteutrophicationlevelTheresultsshowedth

4、attheleveloflakeeutrophicationwererelatedtothecontentofphosphorusinlakesediments，therelationshipbetweenthephosphorusfraction；anditscontentpercentageandtheleveloflakeeutrophicationwasmorecloseThehigherelltrop]hicationleve

5、loflakeswas，thehighercontentpercentageofreadilyreleasablephosphorusWaS，andthelowercontentpercentageofcalciumphosphorusandresiduephosphorusinthelakesedimentwas，whilethelakesedimentsinloweutrophicationlevelweretheoppositeT

6、heaverageoftotalphosphoruscontentinthelakesedimentsofYunnanGuizhouPlateauLakes(64712～21026；8mg／kg)wasmorethantheaverageoftotalphosphoruscontentinthelakesedimentsofeasternplainslakes(42176143280mg／kg)，andtheaverageofirona

7、ndaluminumcontentinthelakesedimentsofYunnanGuizhouPlateauLakesWaSmorethanthelakesedimentsofeasternplainslakesInthemoresevereeutrophiclakes，thecontentoftotalPwashilgheLalsothecontentofironandaluminumEfrectsofthecontentofi

8、ronandaluminumonthecontentanddistributionofdifierentphosphorusfractionswerenotidentical，inwhichFeandA1hadlesseffectonionexchangeablespecies，andtheinfluenceonthecontentanddistributionofFePandA1PWasgreaterIfFeP、AI—PandBDFe

9、hadsignificantcorrelationwascloselyrelatedwiththedegreeoflakeeutrophication，mainlybecausethereleaseofphosphorusfractionsedimentswerepartlyadsorbedbyironandaluminum；howevertherewasmoreinfluenceofFe、Alonthecontentanddistri

10、butionofrefractoryphosphorus，refractoryphosphorushadsignificantcorrelationwithNaoH85FeandNaOHs5一Al(P001)，whichmayberelatedtotheformationmechanismofrefractoryphosphorusTFe／TP，TAl／TPFe／PandAl／Pmayhaveregionalcharacteristic

11、s，andtheratiorangeofYunnanGuizhouPlateauLakesandtheeasternlakeareaisdifferentthereasonsmaybelakesedimentsofdifferentLakeshavegreaterdifferenceinnatureButTFe廠r只TAl／PFe／PandAl／PofthelakesedimentsindifferentLakeshavesimilar

12、regularityTFe／TP、1Al廠rP、Fe／PandAl／Pmaybeassociatedwiththelevelofeutrophicationinthelakes，thesmallertheratioswere，thehighertheeutrophicationlevelwereInaddition，thehighercontentofir’onandaluminumwas，thestrongeradsorptionof