景观型湖泊富营养化规律模拟及预测研究

《景观型湖泊富营养化规律模拟及预测研究》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、西南交通大学硕士学位论文景观型湖泊富营养化规律模拟及预测研究姓名：栾玉婷申请学位级别：硕士专业：环境工程指导教师：牟瑞芳20081201西南交通大学硕士研究生学位论文第1I页磷的状况后对总磷进行控制。关键词：二维数学模型；富营养化；景观水体；Matlab仿真西南交通大学硕士研究生学位论文第1lI页AbstractThewaterbodyinurbanare嬲，suchaslakes，artificiallakesandring-cityrivers，becomesakeypartofcities’scenery，playingaroleofbeautifyingsurroundi

2、ngsandattractingtourists．Mostofthewaterbodiesarecombinedwitllthelocalhumanandnaturallandscapes，andwithadeepculturaldepositasaresult．Theyareaimportantelementcomprisingofurbanlandscape，andthusgetmereputationasacity’Spearl．However，withthespeedofChina’Seconomicdevelopmentsurpassingthatofenvironme

3、ntalprotectionindustryandpeople’Sconcept，thelandscapewaterbodiesbearincreasinglyheavyburdenofurbandevelopmentandpopulation．Withitsowncharacteristicsoflowabilityinflowingandself-cleaning，theinputpollutantssurpassthewahterbody’Smaxloadingability．Atpresent，mostofthelandscapewaterqualityinChinais

4、gettingworse，withthemajorproblemaseutrophication．Watereutrophicationisthatexcessivenitrogen、phosphorandothernutritionmaterialsenterintowater．Asaresultofthat，algaandotherhydrophytesinthewaterpropagateexcessively,resultinginthechangesofthetransparenceofwaterbodyandthedissolvedoxygen(DO)inwatera

5、ndthedepravationofwaterquality．Finalythefunctionsandecologicalenvironmentsoflandscapewaterwouldbedestroyed．Mostofwatereutrophicationislimitedbyphosphorelement，becausewaterwillbeeutrophicatedundertheconditionofthenitrogen—phosphorscale州／P)between1Oand15，whichispropitioustothepropagationofalga．

6、Thecontentofnitrogeninwaterisnoteasilycontrolledasalgaamdothercontentofnitrogeninwaterorairandliveintheenvironmentswithnitrogenelement．Accordingtoabovepresentation，phosphorplaysanimportantroleintheformationofwatereutrophication．Thatistosay，ifwecancontrolthephosphorcontentinwater，i．e．thescaleo

7、fphosphorandphosphorelementiSthelimitedfactorinwatereutrophication．Inordertocontroltheeutrophicationeffectively，protectthelandscapewaterquality，andutilizewaterresourcesscientifically，itisessentialtoinvestigatethephosphorcontent，distribution，a