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1、热带海洋学报JOURNALOFTROPICALOCEANOGRAPHY2010年第29卷第1期：91−97海洋环境科学http://jto.scsio.ac.cn;http://www.jto.ac.cn*大鹏澳养殖区柱状沉积物中氮、磷的分布特征及污染状况研究黄小平,郭芳,黄良民(中国科学院南海海洋研究所热带海洋环境动力学重点实验室,广东广州510301)摘要：为研究海水养殖对海湾沉积物的累积影响,对大亚湾的大鹏澳养殖区沉积物柱状样中总氮、总磷和有机碳的含量及剖面分布特征进行了研究,并探讨了海水养殖区
2、沉积物中氮、磷的污染状况。结果表明,网箱养殖区、−1−1贝类养殖区和对照区等3个区域柱状样中总氮的含量范围分别为638.2—3803.9mg·kg、740.9—2152.1mg·kg和−1−1−1−1343.2—471.9mg·kg,总磷的含量范围分别为344.7—3233.9mg·kg、297.9—497.5mg·kg和650.2—1327.2mg·kg,有机碳的含量范围分别为0.96%—2.22%、0.87%—1.13%和0.69%—0.95%。该三个因子的含量均从底层至表层呈增加趋势,但网箱养殖
3、区上层增加幅度最为剧烈,贝类区次之,对照区变化幅度最小。所有柱状样中,总氮含量均超标,但网箱养殖区总氮污染最为严重,贝类养殖区次之,对照区最轻;网箱养殖区的总磷在上层的不同深度超标,而贝类养殖区及对照区柱状样的总磷含量均未超标。关键词：海水养殖;沉积物;柱状样;氮;磷;有机碳;大鹏澳中图分类号：P762.3文献标识码：A文章编号：1009-5470(2010)01-0091-07Distributioncharacteristicsandpollutionofnitrogenandphosphorus
4、incoresedimentsofmarinecultureareainDapengCoveHUANGXiao-ping,GUOFang,HUANGLiang-min(KeyLaboratoryofTropicalMarineEnvironmental,SouthChinaSeaInstituteofOceanology,CAS,Guangzhou510301,China)Abstract:Inordertostudyaccumulationeffectsofmarinecultureonsedime
5、nts,thecontentsandprofiledistributioncharacteristicsoftotalnitrogen(TN),totalphosphorus(TP)andtotalorganiccarbon(TOC)incoresedimentsfrommarinecultureareasofDapengCoveintheDayaBaywereinvestigated.Thepollutionstatusofnitrogenandphosphorusofmarineculturear
6、eawerediscussed.The−1resultsshowthatthecontentsofTNincageculture,shellfishcultureandcontrolareasareintherangeof638.2−3803.9mg·kg,−1−1−1740.9−2152.1mg·kgand343.2−471.9mg·kg,respectively;thecontentsofTPareintherangeof344.7−3233.9mg·kg,−1−197.9−497.5mg·kga
7、nd650.2−1327.2mg·kg,respectively;thecontentsofTOCareintherangeof0.96%−2.22%,0.87%−1.13%and0.69%–0.95%,respectively.TheverticaldistributionsoftheTN,TPandTOCcontentsincreasedfromthebottomtosurfacelayersinthestudyareasandthevariationrangeinupperlayerswasgr
8、eaterthanthatinlowerlayers.Theprofiledistributionsofthecontentsincreasedmostdrasticallyinthecageculturearea,followedbythoseintheshellfishcultureareaandleastinthecontrolarea.ThecontentsofTNincoresedimentsamplesallexceededtheassess
