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《基于gis的云南省勐海縣耕地地力評(píng)價(jià)與分析》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在工程資料-天天文庫(kù)。
1、基于GIS的云南省勵(lì)?？h耕地地力評(píng)價(jià)與分摘要：以云南渤?？h為研究對(duì)象，以ArcGIS軟件為平臺(tái),以DEM分析、柵格計(jì)算和空間插值等空間分析技術(shù)為核心，結(jié)合德爾菲法、層次分析法、模糊隸屬度函數(shù)和耕地生產(chǎn)性能綜合指數(shù)(IFI)等方法，確立該縣耕地地力的主要影響因子及其權(quán)重，建立綜合評(píng)價(jià)體系及其空間計(jì)算模型，并對(duì)綜合評(píng)價(jià)結(jié)果做出分析。研究結(jié)果表明，砌?？h51575.73hm2的耕地分為6個(gè)等級(jí)，一至六級(jí)耕地分別占總耕地的14.12%、27.40%、20.17%、17.23%、12.70%、8.38%。劭?？h三級(jí)以上高質(zhì)量耕地占
2、60%以上，耕地地力總體情況良好,大力提升三級(jí)及其以下耕地的耕作能力是改善本地區(qū)耕地質(zhì)量的主要途徑。關(guān)鍵詞：耕地地力；耕地生產(chǎn)性能綜合指數(shù);模糊隸屬度函數(shù);地理信息系統(tǒng)中圖分類號(hào)：F301.24；S153.6文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào):0439-8114(2014)12-2788-06GIS-BasedEvaluationforFarmlandFertilityofMenghaiCountyinYunnanProvinceXUQuan-lil,2a,YANGKun2b,YIJun-hua3(1.SchoolofRemoteS
3、ensingInformationEngineering,WuhanUniversity,Wuhan430072,China；2a.FacultyofTourismandGeographicScience；b.SchoolofInformationScience,YunnanNormalUniversity,Kunming650500,China；3.InspectionStationofSurveyingandMappingProductinYunnanprovince,Kunming650034,China)Abst
4、ract：ToevaluatethefarmlandfertilityofMenghaiCountyinYunnanprovince,theArcGISsoftwarewasusedtomadeDEManalysis,rastercalculationandspatialinterpolationofspatialanalysistechnology.MenghaiCountywasselectedasthestudyareatoestablishmajorfactorsofinfluenceandtheirweight
5、sforthefarmlandlandproductivity.TobuiltacomprehensiveevaluationsystemandspatialcomputingmodelwithDelphimethod,analytichierarchyprocess(AHP),fuzzymembershipfunction,farmlandintegratedfertilityindex(IFI)andothermethodswereused.Spatialdistribution,areastatisticsandf
6、armlandnutrientanalysisfortheevaluatingresultswereanalyzed.TheresuItsshowedthat51575?73hectaresofcultivatedlandinMenghaiCountywasdividedinto6grades.ThepercentagesoftotalfarmlandfromGrade1toGrade6landwere14.12%,27.40%,20.17%,17.23%,12.70%and8.38%,respectively.GISm
7、ethodcouldsatisfytherequirementsforquantifyingandautomatingfarmlandfert訂ityevaluation.ThecultivatedlandoverGrade3occupiedmorethan60%oftotalland.TheoverallsituationofcultivatedlandfertilityinMenghaiCountywasgood.Thegovernmentshouldadjustmeasurestomaintaintheexisti
8、ngqualityofcultivatedlandresources,andtoenhancethefarmingabilityofcultivatedlandworsethanGrade3.Keywords:farmlandfertility；farmlandintegratedfertilityindex；fuz
