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《基于結構方程模型的滇池流域水環(huán)境質(zhì)量影響因素研究》由會員上傳分享，免費在線閱讀，更多相關內(nèi)容在學術論文-天天文庫。
1、～華中農(nóng)業(yè)大學2012屆碩士研究生學位論文——————————————————————————————二二二—二二==_二二==2．_一—～AbstractDianchiLakepresentsaseriousstateofeutrophicationandasharpdeclineinwaterqualitywiththerapiddevelopmentofeconomicandurbanization．Thereisanintricaterelationshipbetweensocio—economic，landuseandwate
2、rqualitywithinthehasinmge．Multitudinousfactorsmighthaveeffectonqualityofwaterenvironment．Tosttldytherelationshipbetweenwaterquality,socio—economicandlanduseandfindoutthekevfactorsthataffectwaterqualityisofgreatsignificancefortheprotectionofDiaJlchiLakewaterenvironmentand
3、integratedmanagement．ThisresearchusedtheStructuralEquationModelingtostudyfactorsthatinfluencethewaterenvironmentqualityofDianchiLake．Takingsocio—economicdevelopment．1anduseandwaterpollutionasmodellatentvariables，selectingthepossiblefactorsasmeasurementindexofeachlatentva
4、riable，andaccordingtothecausalrelationshipbetweenwaterquality,socio—economicandlandusebuiltthehypotheticalmodel．Thisresearchused8subbasinsdataofDianchiLakein2008asthemodelsample．a(chǎn)ndusedBootstrapmethodtorealizethesampleaugment．Thoughmodelparameterestinlation．fittinginspec
5、tionandmodification，theoptimalmodeltofigureouttheafirectingrelationsmadthedegreeofinfluenceamongfactorsandbetweenfactorsandindicators、vasobtained．Thisstudyalsopresentedthesuggestionsonintegratedriverbasinmanagementbasedontheoptimizationmodel．Theresultsshowedthatsocio—eco
6、nomicwasthedominantfactortoinfluencewaterqualityofDianchiLakebasin，whichnotonlyhaddirectimpactonwaterenvimnmentquality,butalsohadindirectimpactthroughthechangeoflandusepattemsonit．Amongthesocio。economicfactorswhichhadsignificantinfluenceIDnwaterquality,thein‘：reaseofurba
7、nizationrate，GDPannualgrowthrate，animal]husbandryandunitarea(，utputgrowmoffarmingcouldexacerbatethewaterpollution；Improvementofoutputvalueoftertiaryindustryandproportionofsewagetreatmentrate1veillpromotetheameliorationof、ⅥlterenVlro衄ent·Amongthelandusefactorsthatobviousl
8、yaffectingthewaterquality,Increaseoftheproportionofforestlandandaverageshapeindexofcultivatedlandcouldm
