资源描述:
《Assessing impact of urbanization on river water quality in the Pearl River Delta Economic Zone书》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、EnvironmentalMonitoringandAssessment(2006)120:313–325DOI:10.1007/s10661-005-9064-xcSpringer2006ASSESSINGIMPACTOFURBANIZATIONONRIVERWATERQUALITYINTHEPEARLRIVERDELTAECONOMICZONE,CHINATINGPINGOUYANG∗,ZHAOYUZHUandYAOQIUKUANGKeyLaboratoryofMarginSeaGeology,GuangzhouInstituteofGeochemistry,
2、ChineseAcademyofSciences,Wushan,Guangzhou,Guangdong510640,P.R.China(∗authorforcorrespondence,e-mail:oyangtp@gig.ac.cn)(Received1March2005;accepted7October2005)Abstract.ThePearlRiverDeltaEconomicZoneisoneofthemostdevelopedregionsinChina.Ithasbeenundergoingarapidurbanizationsincetherefor
3、mationandopeningofChinain1978.Thisprocessplaysasignificantimpactontheurbanenvironment,particularlyriverwaterquality.Themaingoalofthispresentstudyistoassesstheimpactofurbanactivitiesespeciallyurbanizationonriverwaterqualityforthestudyarea.SomeLandsatTMimagesfrom2000wereusedtomaptheareasf
4、ordifferentpollutionlevelsofurbanriversectionsforthestudyarea.Inaddition,animprovedequalizedsyntheticpollutionindexmethodwasutilizedtoassessthefieldanalyticalresults.Theresultsindicatethatthereisapositivecorrelationbetweentherapidityofurbanizationandthepollutionlevelsofurbanriverwater.C
5、omparedtotheruralriverwater,urbanriverwaterwaspollutedmoreseriously.Duringtheurbandevelopmentprocess,urbanizationandurbanactivitieshadasignificantnegativeimpactontheriverwaterquality.Keywords:riverwaterquality,urbanization,impactassessment,thepearlriverdeltaeconomiczone,China1.Introduct
6、ionThestudyarea,thePearlRiverDeltaEconomicZone(PRDEZ),atypicalurbangroup,locatedinSouthernChina,isoneofthemostdevelopedregionsinChina.AccordingtotheregionalismofGuangdongprovince,itincludesnineadministra-tivecities.AllthecitiesdevelopclosetothePearlRiversystem(Figure1).Asaforelandofthe
7、reformationandopeninginChina,thePRDEZhasbeenexperienc-ingarapidurbanizationandindustrializationatanunprecedentedratesince1978.TheurbanizationlevelofthePRDEZincreasedfrom29.6%in1982to71.4%in2000(PopulationcensusofficeofGuangdongProvince,1984,2002).Asaresult,urbanpopulationincreasedandu