半湿润地区水生态环境恢复研究

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1、河海大学博士学位论文半湿润地区水生态环境恢复研究姓名：倪深海申请学位级别：博士专业：水文学及水资源指导教师：崔广柏20031028{9)半湿漏渣嚣承生态醛麓恢复酌对策与措施瓿保证流域经济社会可持续发展的蔽略高度出发，袋取工程、技术、行政、经济、法律与宣传教育等综合性措施，逐澎提毫流域的承资源承裁力，确保水生态环境恢复目标的落实。建立节水型社会，提高水资源利用效率；控制污染犍爿}敷总量，保护水巧壤；控嚣l求±浚失，改善出嚣生态；捷纯求澡工程调度，改善河道水生态；实施南水北调，全面恢复水生态；提出了大汶河流域水生态环境恢复静绦障措熬。关键词：半湿润地区；水污染控制；水质模型

2、t管理系统；生态环境鬻水量；水资源承裁力：承生态环境後复指标体系；生态安全InABSTRACTSemi-humidregionpollutionisserious，andtheaquaticecologicalenvironmentisworsen，whichaffectseriouslynationaleconomysustainabledevelopmentandpeople’5livingstandardfu雌hertoincrease．weenhancethewaterpollutioncontrol，inordertorestorationaquaticeco

3、system．Thisresearch，regardsDawenriverinsemi—humidregionasexample，hasputforwardwaterpollutioncontrolprojectsandaquaticecologicalenvironmentrestorationmeasurements．Mainresearchcontentsasfollow：(1)Investigationandassessmentofpollutionsources。Byanalyzingassessment。waterqualityofDawenriverbas

4、inabove89％lengthisVorsuperVgradeinDawenriverbasin．MainpollutantsareBOD5，SS，COD，andpetroleumetc。《2)Waterenvironmentalquailtyassessment．Thepaperhasassessmentwaterenvironmentalqualitybychoosingfiverivercrosssectionsandlarge—mediumsizereservoirsinDawenriverbasin。Assessmentindexeswereselected

5、asfollow8items：pH，DO，COD￡“totalhardness，NH3一N，N02-N，As，andphen01．Theassessmentresultexpressesthatwaterenvironmentalqualityoffivereservoirsisgood。Courseofrivercrosssections，excepttheupperstreamShapo，areVorsuperVgrade，expressthatDawenriverbasinmainchannelandmainsubsidiaryonehavebeensuffere

6、dseriouspollution，(3JWaterqualitysimulation．WaterqualitymodelofDawenriverbasinhasbeenestablished．Accordingtothewaterqualitydata，wepredictandmonitorwaterquality．Waterqualitysimulationresultofpresentlevelyearreflectsbasicactualcondition．Waterqualitypredictresultsofplanninglevelyearstatecle

7、arly,BOD5hasup—trend，DOhasdescendtrend，furthermakesknownthatwaterqualityofDawenriverhasmuchmoreworsentrend．{4)Analysisofwaterenvironmentalcapaeityandcalculationofpollutantcutdownamount．AccordingtOwaterqualitytargetofplanninglevelyeareachriver，waterenvironmentalcapacityhas