gis支持下的山区土地利用景观格局优化分析-optimization analysis of landscape pattern of land use in mountainous areas supported by gis.docx

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2018-06-04 发布于上海
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gis支持下的山区土地利用景观格局优化分析-optimization analysis of landscape pattern of land use in mountainous areas supported by gis.docx

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gis支持下的山区土地利用景观格局优化分析-optimization analysis of landscape pattern of land use in mountainous areas supported by gis

GIS支持下的山区土地利用景观格局优化研究resistance(MCR)modelbyusingGIStechnology,andexploredthesinglelanduse optimizationmethodofappleorchardinmountainsarea.QixiaCitywasdividedintofour developmentalzones:themostsuitablezone,highsuitablezone,suitablezoneandthesub-suitablezonewhichwere20466hm2,38392hm2,97367hm2,41301hm2,respectively.Theacreageofthemostandhighsuitablezoneforappleplantingwas29.84%ofthetotalarea.（3）Assumedtwoprocessesoftownlandandecologicalprotectedlandexpandingtosmiulateurbanlandscapepatternoptimization,thispaperestablishedanecologicalsuitability assessmentmethodbased onminmium cumulative resistance margin, whichcanbeexpressedbyusingtheformulaofMCRmargin=MCRecologicalprotectedlandexpansion-MCRurbanlandexpansion.Whenonepixel’sMCRmargin0,itshouldbedividedintoecoappropriateland;Instead,whenMCRmargin0, itshould beclassifiedasthe landsuitableforconstruction; andwhenMCRmargin=0,itshouldberegardasthewatershedbetweeneco-appropriateandconstructionsuitableland.AsanexampleofCuipingandZhuangyuansubdistrictoffice,thispaperselectedtheexistingtownlandandeco-protectedlandasthesourcesof expanding,andestablishedasystemtocalculateresistancefromsixaspects:terrain,landuse,hydrogeology,ecologicalvalue,ecologicalsensitivity,andecologicalfunction.Basedonthementionedmethod,thispaperdividedCuipingandZhuangyuansubdistrictofficeintofourdevelopmentalzones:prohibited,restricted,keyandoptmiizedareas,whichwere5912hm2、3049hm2、4244hm2、2181hm2,respectively.Thelandsuitableforeco-protectionwas8961hm2,whilesuitableforconstructionwas6425hm2.（4）LandscapepatternoptimizationinwatershedwasestablishedbyusingMCRandthegeneralarrangementofaggregate-with-outliersforreference.Ziniushanwatershedwas dividedintocoresourcereservearea,ecologicalbufferarea,farmingareaandhumanlifearea which were 6595hm2、2640hm2、2353hm2、622hm2, respectively. Finally someeffectivemeasureswereadvancedtokeepthesteadyofZiniushanwatershedandsustainableland-usemanagement.（5）Landscape pattern optimization in mountains area was proposed based onlandsc