基于gis的永久性基本农田划定关键技术研究——以重庆市涪陵区为例

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1、西南大学硕士学位论文rasterdataanalysismethodallthetimewhichCallnotreflectthequantityandqualitychangesoffarmlandclearly．Inthispaper,FulingDistrict,ChongqingCityisusedasaexample．Firstly,mathematicalquantificationmethodincludingquantitativelandevaluationandsiteassessme

2、nt(LESA)method，theDelphimethod’theanalytichierarchyprocess(AHP)，maximumentropytechniquesandTOPSISordermethod，basedonGISmethodsandtechniquesfordataintegration，areallusedtoselectoptimallayoutofbasicareaofpermanentfarmland．Takingarablelanddelineationfromsecon

3、dlandsurveydataasresearchunits．Secondly,usingtheprofessionalGISsoftwareArcGIStobuildagraphicalmodelstoconstructbasicareaofpermanentfarmlanddatabaseandmakingsomestudiesrelyonsomeotherprofessionalGISsoftwarefordataprocessingandoutputoutcomes．Somebasicareaoff

4、armlandthematicmapresearcheshavebeenmadebyArcMAP．Detailsasfollow．(1)ExploringthesignificanceofdelineatingbasicareaofpermanentfarmlandconsideringgeographicandgeomorphicconditionsofFulingDistrictandanalyzingthecurrentsituationoffarmlandintheregionfromfourasp

5、ects：distribution，quantity,qualityandtheproblemsofarablefarmland．Thendiscussingevaluationfactorsforselectinganoptimalschemeofbasicareaofpermanentfarmland，toprovideafoundationforscientificandrationaldelineationofbasicareaofpermanentfarmland．(2)Obtainingthee

6、valuationfactorsbyGISspatialdataintegrationmethodandthenstandardizingthem．GettingacomprehensiveevaluationindexweightbymaximumentropytechnologymethodandAHPmethodandbuildingasystemofselectinganoptimalschemeofbasicareaofpermanentfarmlandtomakeastandardizeddec

7、isionmatrix．UsingTOPSIStosortallarablelandindex，throughtheindexcomparison，accumulatethenumberofpermanentarablefarmlandtothebasicfarmlandrequirementandthenexporttheresultpicture．(3)AccordingtothefunctionofgraphicalmodelingofArcGISandpermanentbasicfarmlandev

8、aluationresults，apermanentbasicfarmlanddatabaseisbuilt．GraphicmodelingCanensuredataloadingmuchmoreconvenientandamomatic．Thisisalsoaquickandeasymethodofsharingdataandprovidingtechnicalsupportfordatastorage．(4)