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1、海洋重金屬生態(tài)風(fēng)險(xiǎn)評(píng)價(jià)方法比較研究曾淦寧1,2*陳委2(1衛(wèi)星海洋環(huán)境動(dòng)力學(xué)國家重點(diǎn)實(shí)驗(yàn)室,浙江,杭州3100122浙江工業(yè)大學(xué)化學(xué)工程與材料學(xué)院海洋系,浙江杭州310014)摘要:通過對(duì)象山港典型站位表層沉積物中Hg、Cu、Pb、Cd和As5種重金屬的測定,應(yīng)用Hakanson指數(shù)法、地累積指數(shù)法和三角模糊數(shù)法,對(duì)象山港典型站位表層沉積物生態(tài)風(fēng)險(xiǎn)進(jìn)行評(píng)價(jià)。評(píng)價(jià)結(jié)果表明:象山港重金屬潛在生態(tài)危害為中等生態(tài)危害,主要潛在生態(tài)風(fēng)險(xiǎn)因子是Hg、Pb和Cd元素。象山港重金屬潛在生態(tài)危害有逐年上升趨勢,從2004年的輕微生態(tài)危害上升到了2009年的中等生態(tài)危害。本文還對(duì)H
2、akanson指數(shù)法、地累積指數(shù)法和三角模糊數(shù)法3種評(píng)價(jià)方法做了比較,結(jié)果表明:地累積指數(shù)法是基于重金屬總量只能夠反映出研究區(qū)域大致的污染強(qiáng)度,不能夠滿足對(duì)生態(tài)環(huán)境影響進(jìn)行合理評(píng)價(jià)的要求。Hakanson指數(shù)法和三角模糊數(shù)法相較地累積指數(shù)法能更全面反映沉積物中重金屬的污染狀況和生態(tài)危害。關(guān)鍵詞:Hakanson指數(shù)法;地累積指數(shù)法;三角模糊數(shù)法;潛在生態(tài)風(fēng)險(xiǎn)評(píng)價(jià)ComparisonofAssessmentMethodsBasedonMarineHeavyMetalEcologyRiskZENGGanning1,2CHENWei2(1,StateKeyLabora
3、toryofSatelliteOceanEnvironmentDynamics,SecondInstituteofOceanography,StateOceanicAdministration,Hangzhou310012,China;2,DepartmentofMarineTechnology,CollegeofChemicalEngineering&MaterialsScience,ZhejiangUniversityofTechnology,Hangzhou,310014,China)Abstract:Basedonsurfacesedimentacqui
4、redfromXaingshanBay,includingHg,Cu,Pb,CdandAsareanalysed,andecologicalriskassessmentfortheXiangshanBayarediscussed.Theresults*作者簡介:曾淦寧,1977-,男,江西省新干縣人,講師,博士,主要研究方向:海洋環(huán)境科學(xué),E-mail:gnzeng@zjut.edu.cn,資助項(xiàng)目:浙江省教育廳Y200907439;zj908-02-03-03;SOED0608;浙江工業(yè)大學(xué)教學(xué)改革項(xiàng)目“《海洋規(guī)劃與管理》優(yōu)秀課程建設(shè)indicatethatt
5、heecologicalenvironmentofXiangshanBayisimpactedbyheavymetalpotentialecologicalrisk,themainpotentialecologicalriskfactorisHg,PbandCdelements;ThepotentialecologicalriskofXiangshanBayismoderateecologicalharm.ThepotentialecologicalriskofXiangshanBayisincreasedyearbyyear.Thepotentialecolo
6、gicalriskwasslightin2004,anditincreasedtomiddlein2009.ThisarticlealsocomparedHakansonindex,geologicalindexandtriangularfuzzynumbermethod,Theresultsindicatethatthegeologicalindexisbasedonthetotalamountofheavymetalstogenerallyreflectthepollutionintensityofthestudyarea,cannotmeettherequ
7、irementofreasonablyassessingtheecologicalenvironmentimpact.Comparedwithgeologicalindex,Hakansonindexandthetriangularfuzzynumbermethodcanmorefullyreflectthepollutionandecologicalriskofheavymetalsinsediments.KEYWORDS:HakansonExponentialmethod,IndexofGeoaccumulationmethod,TriangleFuzzyN
8、umbermethod,