摘要
Waterqualityiscriticaltoensurethatmarineresourcesandtheenvironmentareutilizedinasustainablemanner.TheobjectiveofthisstudyisthereforetoinvestigatetheoptimumplacementofmarineenvironmentalmonitoringsitestomonitorwaterqualityinShanghai,China.Toimprovethemappingorestimationaccuracyoftheareaswithdifferentwaterqualitygrades,themonitoringsiteswerefixedintransitionbandsbetweenareasofdifferentgradesratherthaninotherpositions.Followingbidirectionaloptimizationmethod,first,18candidatesiteswereselectedbyfilteringoutspecificsitecategories.Second,threeofthesewere,inturn,eliminatedbecauseoftheruledefinedbythechangesintheareasofwaterqualitygradesandbythestandarddeviationoftheinterpolationerrorsofdissolvedinorganicnitrogen（DIN）andphosphate（PO_4-P）.Furthermore,indicatorkrigingwasemployedtodepictthetransitionbandsbetweendifferentwaterqualitygradeswhenevernewsamplingsiteswereadded.Thefouroptimizationprojectsofthenewlyaddedsitesrevealthat,alloptimizedsitesweredistributedinthetransitionbandsofdifferentwatergrades,andatthesametimeintheareaswherethehistoricalsitesweresparselydistributed.Newsiteswerealsofoundintheoverlapregionofdifferenttransitionbands.Additionalsiteswereespeciallyrequiredintheseregionstodiscriminatetheboundariesofdifferentwaterqualitygrades.Usingthebidirectionaloptimizationmethodofthemonitoringsites,theboundariesofdifferentwaterqualitygradescouldbedeterminedwithahigherprecision.Asaresult,theinterpolationerrorsofDINandPO_4-Pcouldtheoreticallydecrease.
出版日期
2018年04月14日（中国期刊网平台首次上网日期，不代表论文的发表时间）
