簡介：華南理工大學(xué)碩士學(xué)位論文中山市不同企業(yè)類型區(qū)域土壤重金屬污染分析姓名葉中進(jìn)申請(qǐng)學(xué)位級(jí)別碩士專業(yè)環(huán)境工程指導(dǎo)教師汪曉軍20061012ABSTRACTINRECENTYEARSCHINAHASBETXMEINCREASINGLYSERIOUSPOLLUTIONOFTHESOILALONG、JVITHTHEDEVELOPMENTOFMODEMINDUSTRYTHENUMBEROFINDUSTRIALENTERPRISESOFZHONGSHANCITYINCREASEDRAPIDLYINTHEPASTFEWYEARS，THISINEVITABLYBROUGHTABOUTACERTAINAMOUNTOFPOLLUTIONTHEMETALPOLLUTIONINSOILNEARTHEENTERPRISESTHATEMITMOREPOLLUTANTSEVENWORSEINORDERTOUNDERSTANDTHECHARACTERISTICSOFTHEHEAVYMETALCONTAMINATIONOFSOILOFTHEREGIONTHESOILSAMPLEOFANUMBEROFMAJORINDUSTRIALENTERPRISESINZHONGSHANCITYHADBEENSTUDYALLMONITOREDTHECONTENTOFHEAVYMETALSSUCHASCOPPERZINC，NICKEL，CHROMIUM，CADMIUM，LEADMERCURYANDARSENICWEREANALYZEDACOMPARATIVEANALYSISOFMAJORPOLLUTANTSHADDONEABOUTHEAVYMETALSINTHESOILNEARTHEDIFFERENTTYPESOFENTERPRISESTHESCIENTIFICEVALUATIONOFENVIRONMENTALWASUSEDANALYSISOFSOILPOLLUTIONOFHEAVYMETALS，THERESEARCHABOUTTHERELEVANCEOFHEAVYMETALPOLLUTIONINSOILANDTHETYPEOFTHEENTERPRISESHADBEENDONETHEFINDINGSINDICATEDTHAT，BESIDESACONTRASTREGIONOTHERVARIOUSTYPESENTERPRISEREGION’SSOILRECEIVESTHEVARYINGDEGREEPOLLUTIONOFTHEHEAVYMETALSPECIALLYTHESYNTHESISPOLLUTIONINDEXOFTHEGALVANIZES，THEDECORATIVELIGHTING，THEHARDWARE，THECHEMICALINDUSTRYHASALISURPASSEDTHEHIGHLEVELOFTHEPOLLUTIONRANK30ALREADYBELONGEDTOTHEHEAVYPOLLUTIONLEVEL。MOREOVERTHESOIL’SHEAVYMETALPOLLUTIONCONDITIONOFTHEDIFFERENTENTERPRISEREGIONTYPEISDIFFERENT，ITSMAINPOLLUTIONFACTORALSOHASTHECHARACTERISTICVALUEANDTHERELEVANCEFINALLYTHERESTORATIONTECHNIQUESOFTHEHEAVYMETALSSOILWASDESCRIBEDINDETAIL，ANDTHETECHNICALDIRECTIONABOUTTHEFUTUREUSEOFTHERESTORATIONOFHEAVYMETALINSOILOFZHONGSHANCITYHADBEENPROPOSEDKEYWORDSSOIL；POLLUTIONOFHEAVYMETAL；TYPEOFENTERPRISE；RESTORATIONTECHNIQUEII

簡介：浙江大學(xué)碩士學(xué)位論文不同類型原油中含氮化合物的組成與分布姓名鄭霞申請(qǐng)學(xué)位級(jí)別碩士專業(yè)環(huán)境科學(xué)指導(dǎo)教師朱揚(yáng)明20060525餐浙江大學(xué)碩士學(xué)位論文不同類型原油中臺(tái)氮化合物的組成與分布特征ABSTRACTINORDCRTOSTUDYTHERELATIONBCTW∞NSEDIMENTIONOFSOURCCROCKANDNITROGENBEARINGCONTAININGWEHAVETHESAMPLINGA∞EASINCLUDINGBAISEBASINTARIMBASINNORTHPARTOFQAIDAMBASINANDWESTPANOFQAIDAMBASINWHICHAREREPRESENTTTⅡWSTIALBASINMARINEBASINTER艙STIALBASINANDSALINEBASINOVERFORTYREPRESENTIVEOILSARCANALYSEDALLTHECRUDEOILSAMPLESWCTOFRACTIONATEDUSINGACHROMATOGRAPHYCOLUMNGASCHROMATOGRAPHYGCANDGASCHROMATOGRAPHY咖DA囂SPECTROME仃YGCMSWEREEMPLOYEDTOANALYZEFORPYRROLICN妯∞GENFL趾TIOUSNPHENYLCARBZOLEWSSADDEDTOTHEPYRROHCNITROGENFRACTIONSPRIORTOGCMSANALYSISANDUSEDASANINTERNALSTANDARDTOQUANTIFYINDIVIDUALPYRROLICCOMPOUNDSANDTHEMAINRESULTSWEGOTARE嬲FOLLOWSTHETERRESTRIALOILSHAVELOWAMOUNTOFNOTROGENFROM5UE／GTO38UG／GMOSTOFTHEM黜LOWERTHAN10UG／GWHILETHEMARINEOILSHAVETHEAMOUNTFROM10UG／GTO55UG／GTHEMARINEOILSHAVEAAMOUNTOFMETHYLCARBAZOLEFIOMOSUG／GTO23UG／GCOMPAREDWITHTHEMARINCOILS，THETERRESTRIALOILSHAVERELATIVELYLOWAMOUNTOFMETHYLCARBAZOLEFROM01UG／GTOO7UG／G11圮AMOUNTOFBENZOCARBAZOLEISHIGHERINANOXICMALJBCBASIN02UG／GTHEDISTRIBUTIONOFNITROGENCOMPOUNDSVARYEXTINETLYINVARIOUSKINDSOFOILS，WHICHREFLECTINGTHEDIFFERENCEINORIGINALORGANICMATTERSANDDEPOSITIONALENVIRONMENTTHERATIOSOF3／4一METHYLCARBAZOLEINTERRESTRIALOILSARCHIGHERTHAN10，WHILEINMARINEOILSTHERATIOSARCFROM07TO10THERATIOSOF3／4METHYLCARBAZOLEMAYREFLECTINGDIFFERENTDEPOSITIONALENVIRONMENTOFSOURCEROCKTHEAMOUNTOFBENZO嗍EARBAZOLEISHIGHERINTERRESTRIALBASINFROM8％TO16％，COMPAREDWITHMARINEOILSFTOM0TO8％BENZCI嗍CARBAZOLEMIGHTBEINDICATIVEOFTERRIGENOUSCONTRIBUTIOMTHERATIOSOFA／ACBENZOCARBAZOLEBCISHIGHERINBAISEBASINTHANTAHMUBASINTHATMEANSBCRATIOISHIGHERINTERRESTRIALENVIRONMENTKEYWORDSCRUDEOIL，NITROGENBEARINGCONTAININGDEPOSITIONALENVIRONMENTORIGINALORGANICMATTERSⅡ

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簡介：湖南農(nóng)業(yè)大學(xué)碩士學(xué)位論文EDTA萃取前后三種不同污染類型土壤重金屬的形態(tài)分布以及生物可利用性分析姓名雷鳴申請(qǐng)學(xué)位級(jí)別碩士專業(yè)環(huán)境工程指導(dǎo)教師廖柏寒20050601能較好地評(píng)價(jià)土壤重金屬的潛在危害性。在生物不可利用態(tài)分析上，LELEYTER萃取法的結(jié)果比TESSIER萃取法的要小。關(guān)鍵詞；污染土壤；重金屬；TESSIER連續(xù)萃取法；LELEYTER連續(xù)萃取法；生物可利用性Ⅱ

簡介：大連理工大學(xué)碩士學(xué)位論文中國產(chǎn)品生命周期影響評(píng)價(jià)終點(diǎn)破壞類型模型框架建立及案例應(yīng)用姓名趙輝申請(qǐng)學(xué)位級(jí)別碩士專業(yè)環(huán)境科學(xué)指導(dǎo)教師張樹深20050601中國產(chǎn)品生命周期影響評(píng)價(jià)一終點(diǎn)破壞婁型模型框架建立及案例應(yīng)用ABSTRACTTHELIFECYCLEASSESSMENTLCAISONEOFTHEMOSTIMPORTANTENVIRONMENTALMANAGEMENTTOOLSTHELIFECYCLEIMPACTASSESSMENTLCIAPHASEOFLCAISAIMEDATUNDERSTANDINGANDEVALUATINGTHEMAGNITUDEANDSIGNIFICANCEOFTHEPOTENTIALENVIRONMENTALIMPACTSOFAPRODUCTSYSTEMTHEGOALOFTHISSTUDYISTOBUILDAENDFIOINTDAMAGEMODELFRAMEWORKWHICHREPRESENTSTHEENVITONMENTINCHINATHISPAPERFIRSTLYREVIEWESTHELCAMETHODANDITSAPPLICATIONSSUBSEQUENTLY，ITFOCUSESONTHEPROGRESSOFTHEKEYSTEPSANDHOTPOTOFLCIABASEDONABOVEPART，THEENDPOINTDAMAGEMODELFRAMEWORKOFLIFECYCLEFORCHINAPRODUCTSISCREATEDTHEMODELFRAMEWORKINCLUDESSELECTIONOFDAMAGECATEGORIES，NORMALIZATIONANDWEIGHTINGSTEPSFIRSTLY，BASEDONTHEMODEL，THEDAMAGECATEGORIESANDSUBDAMAGECATEGORIESARESELECTEDAVAILABLECHARACTERIZATIONMODELARESELECTEDANDTHEDAMAGECATEGORIESARECHARACTERIZEDATTHEENDPOINTLEVELINTHECAUSEEFFECTCHAINSECONDLY，NORMALIZATIONFACTORSAREDEVELOPEDTHEFACTORSREPRESENTTHETOTAL，ANNUALDAMAGEPOTENTIALFORPERDAMAGECATEGORYFORCHINAOVERTHEYEAR1995TWOTYPESOFNORMALIZATIONFACTORSAREGIVENYEARLYTOTALSANDTOTALSPERINHABITANTBECAUSEOFTHELIMITATIONOFWEIGHRINGMETHODSANDTHEFAULTINESSOFDATAS，THEWEIGHTINGVALUESAVAILABLEFORCHINAARENOTCREATEDACCORDINGTOTHESIMILARITYOFTHEATTITUTETOTHREEDAMAGECATEGORIES，F(xiàn)OURTYPESOFWEIGHTINGVALUESINECOINDICATOR99ARESELECTEDLAST，ACASESTUDYOFLIFECYCLEASSESSMENTFORXIALICARMADEINCHINAISPERFORMEDBYUSINGTHEDAMAGEMODELWHICHHASBEENBUILTNOTONLYTHECASECALLMAKEREFERENCETOTHECONGENERICPRODUCTS，BUTALSOTHERESULTSOFASSESSMENTCANBEAPPLIEDTODETERMINETHEENVIRONMENTALTAXRATE，THEECOLO畫CALLABELINGCRITERIAANDTHECERTIFICATIONOFTHEENVIRONMENTALFRIENDLYPRODUCTSINCONCLUSIONTHEENDPOINTDAMAGEMODELFRAMEWORKOFLIFECYCLEFORCHINAPRODUCTSESTABLISHEDISTRANSPARENTANDOPERATIONALITWILLBEHELPFULTOLCAPRACTICESWITHINTHEINDUSTRIALPROCESSESOFCHINAKEYWORDSLIFECYCLEASSESSMENT；ENDPOINTDAMAGECATEGORY；LIFECYCLEIMPACTASSESSMENT；NORMALIZATIONREFERENCES；WEIGHLING；XIALIEAR

簡介：南開大學(xué)碩士學(xué)位論文三江平原濕地主要植被類型碳氮儲(chǔ)量及分布特征研究姓名李瑞利申請(qǐng)學(xué)位級(jí)別碩士專業(yè)植物學(xué)指導(dǎo)教師石福臣20070501摘要表層的有機(jī)碳含量較高，容重較小，持水和蓄水性能強(qiáng)，這對(duì)于沼澤濕地調(diào)蓄洪水的能力具有重要意義。5三江平原沼澤濕地平均沉積速率為025EMA‘，沉積通量為O03448GCM2A1，平均為029GCNL2A1。62類沼澤濕地土壤全磷和全硫在垂直方向上具有明顯的分層和富聚現(xiàn)象；相關(guān)性分析表明，全磷和全硫與有機(jī)碳之間呈極顯著的正相關(guān)伊O01。表明植被類型是影響沼澤濕地土壤全磷和全硫空間分布的主要因素之一。關(guān)鍵詞三江平原沼澤有機(jī)碳全氮分布特征沉積速率Ⅱ

簡介：同濟(jì)大學(xué)環(huán)境科學(xué)與工程學(xué)院碩士學(xué)位論文崇明東灘不同類型濕地土壤生物活性差異性分析及其相關(guān)性研究姓名張士萍申請(qǐng)學(xué)位級(jí)別碩士專業(yè)環(huán)境工程指導(dǎo)教師王磊20080301摘要得到逐步提高，同時(shí)在上述各農(nóng)業(yè)利用階段可分別獲得經(jīng)濟(jì)效益。這種圍墾鹽堿土壤的程序式農(nóng)業(yè)利用模式既能盡快產(chǎn)生經(jīng)濟(jì)效益，又可有效改良土壤性質(zhì)，提高土壤肥力和土壤生物活性。本課題主要通過分析不同類型濕地土壤和不同農(nóng)業(yè)利用模式的圍墾土壤的有機(jī)質(zhì)、微生物總量、有機(jī)污染物濃度以及各種酶活性的差異性，確定不同類型濕地土壤的生態(tài)功能和污染物凈化能力，以及目前的程序式農(nóng)業(yè)利用模式對(duì)圍墾灘涂土壤肥力和生物活性的改良效果。研究結(jié)果將為現(xiàn)有天然灘涂濕地的保護(hù)與優(yōu)化以及圍墾灘涂的修復(fù)和合理利用提供理論依據(jù)。關(guān)鍵詞崇明東灘；濕地土壤；有機(jī)質(zhì)；微生物量；酶活性；有機(jī)污染物；農(nóng)業(yè)耕作模式Ⅱ

簡介：大連理工大學(xué)碩士學(xué)位論文產(chǎn)業(yè)生態(tài)網(wǎng)絡(luò)中企業(yè)共生關(guān)系類型的實(shí)證研究姓名劉玉翠申請(qǐng)學(xué)位級(jí)別碩士專業(yè)技術(shù)經(jīng)濟(jì)及管理指導(dǎo)教師蘇敬勤20070601產(chǎn)業(yè)生態(tài)網(wǎng)絡(luò)中企業(yè)共生關(guān)系類型的實(shí)證研究EMPIRICALSTUDYOFRELATIONSHIPTYPESFORENTERPRISESYMBIOTICINECOINDUSTRYNETWORKABSTRACTCURRENTLY，ECOLO百CAL，BEINGNETWORKHASBECOMECHINASINDUSTRIALDEVELOPMENTOFTHETWOMAJORTRENDS，INORDERT0RESOLVECONTRADICTIONSBETWEENECONOMICGROWTH，SOCIALPROGRESSANDTHECONSUMPTIONOFRESOURCESANDPOLLUTIONCHINAISCOMMITLEDTOTHANGINGTHETRADITIONAL”LINEAR”MODELOFINDUSTRIALPRODUCTIONWITHTHEDEVELOPMENTOFCIRCULARECONOMYASTHEINDLLSTRYMODELINTHEECOINDUSTRYNETWORKE躑ISRESOURCESPRODUCTSRENEWABLERESOURCESCYCLEMODELTHUSREDUCETHEAMOUNTOFTHEBURDENONTHEENVIRONMENT，THEECONOMICBENEFITSOFTHEDOUBLEEFFECTSOT0THEEINFORTHEDEVELOPMENTOFTHEINDUSTRYWILLADAPTTOTHEPATTEMOFINDUSTRIALUPGRADINGPROMOTERE西ONALECONOMICANDENVIRONMENTALDEVELOPMENT鎬THEDOMINANTMODERECENTLY，THERESEARCHFORE玳ISSTILLATTHESTARTINGSTAGE，RESEARCHFORTYPESOFENTERPRISESYMBIOTICRELATIONSHIPINEINISATANEXPLORATORYSTAGEBASEDONTHESTUDYOFEINATHOMEANDABROADASWELLASRESEARCHOFENTERPRISESSYMBIOTICRCLATIONSHIP、】LRITLLINEB叮OFCHINATHISPAPERFIRSTANALYSISTHECHARACTERISTICSOFENTERPRISESYMBIOTICRELATIONSHIPTOTIGHTNESSANDDIVERSITY，THISPAPERDEFINEDINFORMATIONSHARING，COOPERATION，TRADE，RESOURCETOMEASUREDIMENSIONSOFTIGHTN鸛S，THENUMBEROFCOOPERATIONPROGRAMS，DIFFERENCESINTHECONTENTSOFCOOPERATION，THENUMBEROFMEMBERS，MEMBERSOFDIFFERENTTOMEASUREENTERPRISESYMBIOTICRELATIONSHIPDIVERSECHARACTERISTICSTHENBASEDONTHETIGHTNESSANDDIVERSITYOFELASSIFICATIONSTANDARDS，THEENTERPRISESYMBIOTICRELATIONSHIPISCLASSIFIEDFINALLYBASEDONTHESTUDYOFDIFFERENTTYPESOFENTERPRISESSYMBIOTICTHERESEARCHCONCEPTISPROPOSEDBASEDONABROADLITERATUREREVIEWONEININCHINAANDABROADDATACOLLECTIONHASBEENMADEWITHAQUESTIONNAIREWHICHISELABORATELYDESIGNEDACCORDINGTOTHELITERATURESANDOPINIONSFROMMIDDLELEVELMANAGERINLUBEIEINSTATISTICALPACKAGEOFSOCIALSCIENCE佑ESSHASBEENUSEDASTHESOFTWARETOOLFORDATAANALYSISMAINFACTORSOFAFFECTINGTIGHTNESSANDDIVERSITYINTHEINDUSTRYPARKINCHINAHAVEBEENIDENTIFIEDACCORDINGTOTHERESULTSOFFACTORANALYSISOFTHEDATATHESENSITIVENESSOFCHINESEENTERPRISESTOSNCHENTERPRISESYMBIOTICRELATIONSHIPAFFECTINGFACTORSANDCURRENTLEVELSOFTHEREALPRACTICESHASBEENDECIDEDWITHADESCRIBINGSTATISTICALANALYSISTOTHEMAINFACTORSTHENTHEFOCUSISTURNEDTOTHESTUDYOFTHEPATTERNSOFENTERPRISESYMBIOTICRELATIONSHIPWITHTHERESUITSII

簡介：廈門大學(xué)碩士學(xué)位論文不同類型水體有色溶解有機(jī)物質(zhì)（CDOM）時(shí)間變化特征及其影響機(jī)制研究姓名周雯申請(qǐng)學(xué)位級(jí)別碩士專業(yè)環(huán)境科學(xué)指導(dǎo)教師商少凌20070801摘要吸收信號(hào)的出現(xiàn)，但06年航次期間卻沒有觀測到該現(xiàn)象，該海域CDOM現(xiàn)場生產(chǎn)機(jī)制仍需要進(jìn)一步的研究。關(guān)鍵詞有色溶解有機(jī)物質(zhì)；光吸收；熒光時(shí)間變化；控制因子；臺(tái)灣海峽；淡水湖II

簡介：南京農(nóng)業(yè)大學(xué)碩士學(xué)位論文不同污染類型對(duì)溪流生態(tài)系統(tǒng)影響的研究姓名吳海燕申請(qǐng)學(xué)位級(jí)別碩士專業(yè)農(nóng)業(yè)昆蟲與害蟲防治指導(dǎo)教師王備新20080601不同污染類型對(duì)溪流生態(tài)系統(tǒng)影響的研究起的溪流內(nèi)流速的異常升高是導(dǎo)致底棲動(dòng)物豐富度和完整性下降的機(jī)制之一。關(guān)鍵詞干擾；大型底棲無脊椎動(dòng)物；生物多樣性；棲境異質(zhì)性；T檢驗(yàn)；多重比較分析；PEARSON相關(guān)分析；CCA分析；物種豐富度；多度II

簡介：南京林業(yè)大學(xué)博士學(xué)位論文不同林分類型土壤及主要組分對(duì)重金屬吸附特征研究姓名朱麗珺申請(qǐng)學(xué)位級(jí)別博士專業(yè)水土保持與荒漠化防治指導(dǎo)教師張金池200706019雙組分離子競爭吸附表明，6MN02、胡敏酸、膨潤土對(duì)PB2、CD”、CU2均具有“選擇性吸附”。雙組分離子共存時(shí)，吸附劑對(duì)某一金屬的吸附量均要低于單一離子存在時(shí)的吸附量。金屬離子兩兩共存的競爭作用大小在不同的吸附劑中呈現(xiàn)不同的結(jié)果，但共性是PB2在三種吸附劑中均表現(xiàn)出更強(qiáng)的競爭能力。10同一元素在不同吸附劑中的單位吸附量作比較分析，顯示6MN02對(duì)PB”、CD2、CU2的吸附量要大大高于胡敏酸和膨潤土對(duì)相應(yīng)離子的吸附量。這可能是由于6MN02不僅與金屬離子產(chǎn)生表面吸附，而且在晶體內(nèi)部也提供吸附點(diǎn)位與離子結(jié)合。更進(jìn)一步機(jī)理有待以后繼續(xù)研究。11以膨潤士對(duì)PB2和CU2雙組分離子競爭吸附為例，建立競爭吸附模型。傳統(tǒng)IAS和LCA模型在高濃度時(shí)不適用本實(shí)驗(yàn)。對(duì)LCA模型引入一個(gè)修正系數(shù)H，用修正LCA模型對(duì)膨潤土與PB2、CU2雙組分離子競爭吸附進(jìn)行模擬，得到較好結(jié)果。關(guān)鍵詞；土壤；有機(jī)質(zhì)；CECPHI重金屬膨潤土；胡敏酸；水合錳氧化物；吸附；模型2

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