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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申請學(xué)位級別碩士專業(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
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上傳時間:2024-03-01
頁數(shù): 71
大?。?1.9(MB)
子文件數(shù):
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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學(xué)位級別碩士專業(yè)環(huán)境科學(xué)指導(dǎo)教師朱揚明20060525餐浙江大學(xué)碩士學(xué)位論文不同類型原油中臺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
下載積分: 5 賞幣
上傳時間:2024-03-01
頁數(shù): 54
大小: 1.7(MB)
子文件數(shù):
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下載積分: 5 賞幣
上傳時間:2024-03-01
頁數(shù): 57
大小: 1.66(MB)
子文件數(shù):
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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學(xué)位級別碩士專業(yè)環(huán)境工程指導(dǎo)教師廖柏寒20050601能較好地評價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
下載積分: 5 賞幣
上傳時間:2024-03-01
頁數(shù): 58
大?。?2.24(MB)
子文件數(shù):
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簡介:大連理工大學(xué)碩士學(xué)位論文中國產(chǎn)品生命周期影響評價終點破壞類型模型框架建立及案例應(yīng)用姓名趙輝申請學(xué)位級別碩士專業(yè)環(huán)境科學(xué)指導(dǎo)教師張樹深20050601中國產(chǎn)品生命周期影響評價一終點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
下載積分: 5 賞幣
上傳時間:2024-03-01
頁數(shù): 91
大?。?3.12(MB)
子文件數(shù):
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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量及分布特征研究姓名李瑞利申請學(xué)位級別碩士專業(yè)植物學(xué)指導(dǎo)教師石福臣20070501摘要表層的有機碳含量較高,容重較小,持水和蓄水性能強,這對于沼澤濕地調(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碳全氮分布特征沉積速率Ⅱ
下載積分: 5 賞幣
上傳時間:2024-03-01
頁數(shù): 79
大?。?2.93(MB)
子文件數(shù):
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簡介:同濟大學(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學(xué)位級別碩士專業(yè)環(huán)境工程指導(dǎo)教師王磊20080301摘要得到逐步提高,同時在上述各農(nóng)業(yè)利用階段可分別獲得經(jīng)濟效益。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質(zhì)、微生物總量、有機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;有機質(zhì);微生物量;酶活性;有機污染物;農(nóng)業(yè)耕作模式Ⅱ
下載積分: 5 賞幣
上傳時間:2024-03-01
頁數(shù): 70
大?。?2.07(MB)
子文件數(shù):
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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)系類型的實證研究姓名劉玉翠申請學(xué)位級別碩士專業(yè)技術(shù)經(jīng)濟及管理指導(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
下載積分: 5 賞幣
上傳時間:2024-03-01
頁數(shù): 81
大?。?2.51(MB)
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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物質(zhì)(CDOM)時間變化特征及其影響機制研究姓名周雯申請學(xué)位級別碩士專業(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)機制仍需要進一步的研究。關(guān)鍵詞有色溶解有機物質(zhì);光吸收;熒光時間變化;控制因子;臺灣海峽;淡水湖II
下載積分: 5 賞幣
上傳時間:2024-03-01
頁數(shù): 73
大?。?3.48(MB)
子文件數(shù):
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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溪流生態(tài)系統(tǒng)影響的研究姓名吳海燕申請學(xué)位級別碩士專業(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)致底棲動物豐富度和完整性下降的機制之一。關(guān)鍵詞干擾;大型底棲無脊椎動物;生物多樣性;棲境異質(zhì)性;T檢驗;多重比較分析;PEARSON相關(guān)分析;CCA分析;物種豐富度;多度II
下載積分: 5 賞幣
上傳時間:2024-03-01
頁數(shù): 71
大?。?3.72(MB)
子文件數(shù):
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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重金屬吸附特征研究姓名朱麗珺申請學(xué)位級別博士專業(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PB2、CD”、CU2均具有“選擇性吸附”。雙組分離子共存時,吸附劑對某一金屬的吸附量均要低于單一離子存在時的吸附量。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PB”、CD2、CU2的吸附量要大大高于胡敏酸和膨潤土對相應(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)部也提供吸附點位與離子結(jié)合。更進一步機理有待以后繼續(xù)研究。11以膨潤士對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模型在高濃度時不適用本實驗。對LCA模型引入一個修正系數(shù)H,用修正LCA模型對膨潤土與PB2、CU2雙組分離子競爭吸附進行模擬,得到較好結(jié)果。關(guān)鍵詞;土壤;有機質(zhì);CECPHI重金屬膨潤土;胡敏酸;水合錳氧化物;吸附;模型2
下載積分: 5 賞幣
上傳時間:2024-03-01
頁數(shù): 119
大小: 3.44(MB)
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簡介:遼寧師范大學(xué)碩士學(xué)位論文遼寧省濱海濕地資源類型及時空演變的驅(qū)動力分析姓名孫培立申請學(xué)位級別碩士專業(yè)環(huán)境科學(xué)指導(dǎo)教師孫才志20070605ABSTRACTWETLANDWHICHISONEOFTHEMOSTIMPORTANTEXISTENTENVIRONMENTFORTHEHUMANBEINGSISWIDELYDISTRIBUTEDINTHEWORLD,ITSDISTINCTPROPERTYISTHEMOSTECOLOGICALLANDSCAPEOFBIODIVERSITYLIAONINGPROVINCEISTHEONLYPROVINCEWITHCAPACIOUSMARINEAREAINTHENORTHEASTCHINALIAONINGPROVINCEHASABUNDANTCOASTALWETLANDRESOURCES,WHICHAREMAINLYDISTRIBUTEDINNORTHLIAODONGBAYLIAOHERIVERDELTAANDTHESILTYINSHOREPLAINFROMYALUTODAYANGESTUARYTHESECOASTALWETLANDRESOURCESNOTONLYHAVEIMPORTANTECOLOGICALFUNCTIONS,SUNCHASKEEPINGTHEECOLOGICALBALANCE,BUTALSOPLAYANIMPORTANTROIEINTHEBOHAICOASTREGIONOFLIAONINGPROVINCEANDEVENINNORTHEASTCHINAFORDEVELOPINGMARINEECONOMYTHEWORKOFTHISPAPERISUNDERTHESUPPORTOFOPENINGFUNDOFCASFUNDEDBYTHEKEYLABORATORYOFWETLANDECOLOGYANDENVIRONMENT,THETITLEOFTHISFUNDISTHERESEARCHONLIAONINGPROVINCECOASTALWETLANDCLASSIFICATIONANDSPACETIMEEVOLVEMENT,ANDTHEGRANTEDNUMBEROFTHISFUNDISWELF一2004B009ITISWELLKNOWNTHATTHETRADITIONALMANMADEINVESTIGATIONMETHODSOFWETLANDHASTHECHARACTERISTICSOFWASTINGTIMEANDLABOR,HIGHCOSTANDLOWEFFICIENCY,ANDLOWPRECISION,BUTREMOTESENSINGTECHNOLOGYHASMANYADVANTAGESSUCHASOBJECTIVE,SPEEDY,LARGESCALE,MULTIPLETEMPORAL,LOWCOST,MULTITEMPORAL,HIGHEFFICIENCYNONDESTRUCTIVE,ETC,WHICHCANOBJECTIVELYREFLECTTHETRUECONDITIONSANDDYNAMICCHANGESOFCOASTWETLANDRESOURCESTHEWORKOFTHISPAPERTOOKSIXCOASTALCITIESOFLIAONINGPROVINCEASEXAMPLES,USEDERDASTODEALWITHDATUMANDARCGIS90ANDMAPLNF07。8TOEDIT,ANDAPPLIEDTHEHUMANCOMPUTERINTERPRETATIONMETHODTODECIPHERTHESATELLITEIMAGE,THECOASTALWETLANDSRESOURCESOFSIXCOASTALCITIESMENTIONEDABOVEWEREINVESTIGATEDDYNAMICALLYINTHEYEAROF1990,1995,2000,2002,ANDONTHISBASETHECOASTALWETLANDCLASSIFICATIONSYSTEMOFLIAONINGPROVINCEWASBUILTTHISPAPERCHOOSESOMESOCIALANDECONOMICINDEXTOREFLECTTHECORRELATIVITYBETWEENTHEAREACHANGEOFCERTAINKINDSCOASTALWETLANDANDTHEVARIABLEGROUPOFSOCIETYECONOMYBYUSINGCCACANONICALCORRELATIONANALYSISMODELWITHTHEHELPOFSTATISTICSOFTWAREOFSPSS,ANDTHEDRIVINGFORCESWHICHAFFECTTHECHANGEOFCOASTALWETLANDSWEREANALYZED,THERESULTSOFTHISPAPER,INSOMEDEGREECANPROVIDEBASICALLYDATUMFORREASONABLYPROTECTINGANDSUSTAINABLEDEVELOPINGTHECOASTALWETLANDSRESOURCESINTHERESEARCHAREA
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上傳時間:2024-03-01
頁數(shù): 54
大?。?1.62(MB)
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簡介:山東大學(xué)碩士學(xué)位論文兩種濕地類型條件下蘆葦和蘆竹的生理特性與氮磷凈化效果比較姓名趙建松申請學(xué)位級別碩士專業(yè)環(huán)境工程指導(dǎo)教師李小明20080307山東大學(xué)碩士學(xué)位論文脫氮除磷具有一定效果。綜合以上結(jié)果說明蘆葦?shù)哪苓m合兩種濕地生境,而蘆竹更適合種植在潛流人工濕地環(huán)境條件。從而可以更好的了解濕地、植物、污水三者之間的聯(lián)系,可以更好的選擇合適的濕地植物,為更好的構(gòu)建與管理人工濕地生態(tài)系統(tǒng)提供依據(jù),使人工濕地技術(shù)更好的應(yīng)用于污水治理。關(guān)鍵詞潛流濕地,表面流濕地,光合速率,葉綠素,葉片水勢
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頁數(shù): 50
大?。?1.62(MB)
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簡介:2009屆研究生碩士學(xué)位論文學(xué)校代碼學(xué)號1026951060801064季束峰忿尺帶崇明東灘濕地不同植被類型下NZO排放通量研究院系專業(yè)研究方向指導(dǎo)教師碩士研究生2009年5月完成THEEMISSIONOFN20FROMTHECHONGMINGDONGTANWETLANDUNDERDIFFERENTPLANTSADISSERTATIONPRESENTEDTOTHEDEPARTMENTOFGEOGRAPHYEASTCHINANORMALUNIVERSITYBYSHENGLAN兀ANGADVISORPROLMINLIUPROLSHI一UANXUINPARTIALFULFILLMENTOFTHEREQUIREMENTFORTHEDEGREEOFMASTEROFSEIENEEMAY,2009扮
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上傳時間:2024-03-01
頁數(shù): 79
大?。?7.97(MB)
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簡介:基于用地類型的重慶城市熱島特性研究重慶大學(xué)碩士學(xué)位論文學(xué)生姓名劉鵬指導(dǎo)教師盧軍教授專業(yè)供熱、供燃?xì)狻⑼L(fēng)與空調(diào)工程專業(yè)學(xué)位工學(xué)重慶大學(xué)城市建設(shè)與環(huán)境工程學(xué)院二OO八年十月THESTUDYOFURBANHEATISLBASEDONTHETYPEOFLINCHONGQINGATHESISSUBMITTEDTOCHONGQINGUNIVERSITYINPARTIALFULFILLMENTOFTHEREQUIREMENTFTHEDEGREEOFMASTEROFPROFESSIONBYLIUPENGSUPERVISEDBYLUJUNSPECIALTYHEATINGGASSINGVENTILATINGAIRCONDITIONINGENGINEERINGCOLLEGEOFURBANCONSTRUCTIONENVIRONMENTALENGINEERINGOFCHONGQINGUNIVERSITYCHONGQINGCHINAOCT2008
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頁數(shù): 112
大?。?6.29(MB)
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