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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的滇池流域人居環(huán)境適宜性評(píng)價(jià)研究霍震,李亞光(北京林業(yè)大學(xué)水土保持學(xué)院,北京100083)摘要:以滇池流域?yàn)檠芯繂卧?從城市濕地環(huán)境的角度出發(fā),通過(guò)討論城市濕地對(duì)城市人居環(huán)境影響的推動(dòng)和制約效應(yīng),分別選取滇池流域自然性和脆弱性兩方面的評(píng)價(jià)指標(biāo),運(yùn)用GIS技術(shù),從區(qū)域尺度對(duì)滇池流域進(jìn)行人居環(huán)境適宜性評(píng)價(jià)。結(jié)果表明:(1)滇池流域人居環(huán)境適宜程度整體呈現(xiàn)出南北兩端較差,中部地區(qū)較
2、好的分布趨勢(shì)。(2)高度適宜區(qū)主要分布在昆明市周邊西山區(qū)、五華區(qū)、盤(pán)龍區(qū)和官渡區(qū)及環(huán)滇池濕地區(qū)域,土地面積約為10202km,約占流域總面積的35%,說(shuō)明昆明市社會(huì)經(jīng)濟(jì)發(fā)展水平對(duì)滇池流域人居環(huán)境適宜性有較大影響;滇池濕地生態(tài)服務(wù)功能不明顯,基本符合滇池污染嚴(yán)重的現(xiàn)狀。(3)滇池流域北部及南部地區(qū)人居環(huán)境適宜性相對(duì)較差,農(nóng)業(yè)2用地約為33000hm,占流域總農(nóng)業(yè)用地的68%,磷礦污染程度、土地利用類型、土壤侵蝕強(qiáng)度、地形起伏度及坡度對(duì)滇池流域人居環(huán)境適宜性都有一定影響。其中,磷礦、采石場(chǎng)等污染源的影響尤為明顯,土地利用類型、土壤侵蝕強(qiáng)
3、度次之。關(guān)鍵詞:GIS;城市濕地;滇池流域;人居環(huán)境適宜性中圖分類號(hào):X171文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):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
