南海北部营养盐结构特征

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1、--TableofContentsAbstract………………………………………………………………IXChapter1Introduction…………………………………………………11.1Nutrientstructureanditscharacteristics………………………………3 1.1.1Nutrientdistributionandlimitationintheestuarineandcoastalarea……3 1.1.2Nutrientstructureanditscharacteristicsintheopenocean………………51.2Reviewo

2、fthenutrientresearchesintheSouthChinaSea……………10 1.2.1ProgressofnutrientstudyintheSouthChinaSea………………………11 1.2.2Problems…………………………………………………………………121.3Goalsofthisresearch………………………………………………13 1.4Structureofthisthesis………………………………………………13Chapter2Studyareaandmethods…………………………………142.1Introduction

3、tothestudyarea……………………………………14 2.1.1ClimateandsurfacecurrentsinthenorthernSCS………………………15 2.1.2WatermassesinthenorthernSouthChinaSea…………………………16 2.1.3MesoscaleprocessesintheSCS……………………………………172.2Samplingandanalysismethods…………………………………20 2.2.1Sampling………………………………………………………………20 2.2.2Analytica

4、lmethods………………………………………………………22 2.2.3Measurementofnitrogenfixation………………………………………25 2.2.4On-deckenrichmentexperiments…………………………………………29Chapter3Low-levelphosphatemeasuredbyMAGIC……………313.1Materialandmethod………………………………………………333.2Resultanddiscussion………………………………………………343.3Distributionoflow-leve

5、lphosphateinnorthernSCS………………373.3.1SurfacedistributionofphosphateinnorthernSCS………………………373.3.2VerticaldistributionofupperwatercolumninnorthernSCS……………40Chapter4Couplingofnutrientwithhydrographyandphytoplanktonactivities…………………………………434.1NutrientdistributioninthenorthernSCS…………………44 4.1.1N

6、utrientlevels……………………………………………………………44 4.1.2Statusofsurfacenutrientdistribution……………………………………45 4.1.3Statusofnutrientverticaldistribution……………………………………454.2Relationshipbetweennutrientandhydrographyinthewinterof2004………………………………………………………………494.2.1TransectA…………………………………………………………………494.2.2Tran

7、sectB…………………………………………………………………514.2.3TransectC…………………………………………………………………534.2.4TransectD…………………………………………………………………53III-----1.1Summaryonnutrients…………………………………………564.3Relationshipbetweennutrientsandhydrographyinthesummer2004………………………………………………………………562.1TransectA…