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1、第17卷第1期水土保持研究Vol.17,No.12010年2月ResearchofSoilandWaterConservationFeb.,20103基于GIS的滇池流域人居环境适宜性评价研究霍震,李亚光(北京林业大学水土保持学院,北京100083)摘要:以滇池流域为研究单元,从城市湿地环境的角度出发,通过讨论城市湿地对城市人居环境影响的推动和制约效应,分别选取滇池流域自然性和脆弱性两方面的评价指标,运用GIS技术,从区域尺度对滇池流域进行人居环境适宜性评价。结果表明:(1)滇池流域人居环境适宜程度整体呈现出南北两端较差,中部地区较
2、好的分布趋势。(2)高度适宜区主要分布在昆明市周边西山区、五华区、盘龙区和官渡区及环滇池湿地区域,土地面积约为10202km,约占流域总面积的35%,说明昆明市社会经济发展水平对滇池流域人居环境适宜性有较大影响;滇池湿地生态服务功能不明显,基本符合滇池污染严重的现状。(3)滇池流域北部及南部地区人居环境适宜性相对较差,农业2用地约为33000hm,占流域总农业用地的68%,磷矿污染程度、土地利用类型、土壤侵蚀强度、地形起伏度及坡度对滇池流域人居环境适宜性都有一定影响。其中,磷矿、采石场等污染源的影响尤为明显,土地利用类型、土壤侵蚀强
3、度次之。关键词:GIS;城市湿地;滇池流域;人居环境适宜性中图分类号:X171文献标识码:A文章编号:100523409(2010)0120159204StudyontheSuitabilityEvaluationoftheHumanSettlementsEnvironmentinDianchiLakeBasinBasedonGISHUOZhen,LIYa2guang(CollegeofSoilandWaterConservation,BeijingForestryUniversity,Beijing100083,China)Abs
4、tract:Fromaperspectiveofurbanwetlandenvironment,bytakingDianchiLakebasinasaunit,anddiscussingthepromotingandconstrainingeffectsofurbanwetlandinfluencingurbanhumansettlements,andchoosingbothnaturalityandfrangibilityindicatorsinDianchiLakebasin,basedonGeographicInfor2mat
5、ionSystemtechnique,thispaperevaluatesthesuitabilityofhumansettlementsenvironmentinDianchiLakebasinontheregionalscale.Theresultsshow:(1)thehumansettlementsenvironmentsuitabilityofDianchiLakebasininmiddleregionisbetterthanthenorthandsouthareasingeneral.(2)Thehighsuit22ab
6、leregion,withalandareaof1020km,accountingfor35%ofDianchiLakebasin’stotal,ismainlylo2catedinKunmingsurroundingareassuchasXishanDistrict,WuhuaDistrict,PanlongDistrictandGuanduDistrictandtheregionaroundDianchiLake,whichindicatesthattheSocialEconomicDevelopmentLevelofKunmi
7、nghasgreatinfluenceonthesuitabilityofhumansettlementsenvironmentinDianchiLakebasin;theecologicalservicefunctionofDianchiLakebasinisnotobvious,whichbasicallycorrespondstothecur2rentsituationofDianchiLakebasin.(3)Thenorthernandsouthernregion,withtheagriculturallandof2330
8、00hm,accountingfor68%ofthisregion,ofwhichthehumansettlementsenvironmentsuitabilityinDianchiLakebasinisrelativelyworse
