生态农业

TheEvaluationonEcologicalAgriculturalDevelop-mentinSichuanProvinceontheBasisofGreyRela-tionalAnalysis

JIANGLing*，QIYan-bin

SchoolofEconomicsandManagement，SichuanAgriculturalUniversity，Chengdu611130，China

AbstractByusingthegreyrelationalmodel，14indexesofecologicalagriculturaldevelopmentinSichuanProvincefrom1997to2008areana-lyzed．Accordingtotherelationaldegreeresults，theecologicalagriculturaldevelopmentin12yearscanbedividedintothreestages：thefirststageisfrom1997to2000，withtheshapeofinvertedU；thesecondstageisfrom2001to2004，belongingtotransitionstagewithslowgrowthrate；thethirdstageisfrom2005to2008，belongingtothestageofrapidgrowth．Itdrawsconclusionthatpercapitagrainyieldisanimportantelementfore-improvinglaborproductivityandin-valuatingecologicalagriculturalconstruction．Besides，reducingtheenergyconsumptionofperunitproduction，

creasingagriculturalscienceandtechnologyapplicationandinputonagriculturalinfrastructureconstructionaretheenginefordevelopingSichuanecologicalagriculture．

KeywordsEcologicalagriculture，Greyrelationaldegree，SichuanProvince，China

Agricultureworldwideisexperiencingastructuraladjust-mentandreforminordertofacetheseveretendsofresourceshortage，environmentalpollutionandecologicaltransmutation．Ecologicalagricultureisputforwardundersuchcircumstance．Itisanewcomprehensiveagriculturalsystem，withrationale-cologyandgoodfunctioncirculation，whichcombinesmodernscienceandtechnologyachievementswithfinetraditionalagri-culturaltechnologiesandintegratesagriculturalproduction，ru-raleconomicdevelopmentecologicalenvironmentmanagementandresourceprotectionandhigh-efficientapplicationintoa

wholebyusingecology，ecologicaleconomicsandsystemsci-ence．Ecologicalagricultureischaracterizedbyintegratingeco-nomicinterests，socialbenefitsandecologicalbenefitsanditis

modernagricultureandthecollectionofsustainableagriculture，

［1］

industrializedagriculture．

AsabigprovinceinwesternChina，thepopulationinSi-chuanProvinceaccountsfor27．9%oftotalpopulationamongtenprovincesinwesternChinaandtheGDPofSichuanProv-incetakes28．9%［2］oftotalGDPinwesternChina．Sichuanisagranaryprovince，aswellasanimportantbaseforChinesegraincrops，cashcropsandlivepigs．Itisthebiggestvegeta-ble"basket"inwesternChina［3］．WithinSichuanProvince，theforest，waterresourcesandriverrunofflisttopinwesternChinaandeveninthewholenation，soitisalsoanimportantecologi-calshelterinthemiddleandupperstreamoftheYangtzeRiv-er．DevelopingecologicalagricultureinSichuanProvincehas

Received：May16，2011Accepted：June11，2011

SupportedbyPlanningFundofChineseMinistryofEducation（10YJA790144）andEleventhFive-YearPlanofResearchonPhilosophy

andSocialScienceofSichuanProvince（SC09B033）andSoftScienceProjectofTechnologyOfficeofSichuanProvince（2010ZR0135）．*Correspondingauthor．E-mail：lingjiang@foxmail．com

brightprospectsandcanfacilitatetherapiddevelopmentoflo-caleconomicdevelopmentpromptly．Constructingecologicalagricultureisconducivetoenhancingthesustainabledevelop-mentcapabilityofSichuanProvince，improvingenvironmentalqualityofecologywithintheprovince，promotingecologicaleconomicdevelopmentandadjustingindustrialstructure．

SichuanProvinceowns20years'experiencesinlaunchingecologicalagriculturalpilots，atpresent；ithashadtwonationallevelecologicalvillages，150provincialecologicalvillagesand450cityandcountylevelecologicalvillages．Hence，deepanal-ysisonSichuanecologicalagricultureisofgreatsignificanceinecologicalagricultureconstructioninwestChina．

1Researchmethodanddatasource

1．1Researchmethod

1．1．1Greyrelationaldegreemodel．Thegreyrelationalanal-ysiscamefromthegreysystemtheoryputforwardbyProfes-sorDengju-long．Itsbasicthoughtistoweightrelationaldegree

accordingtothedevelopingtrendofeachelementandthesimi-larityanddisparitydegreeoftheelements［4］．Iftwoserieshavesimilarcurve，closedistance，thentherelationaldegreeofthetwoisbig；orelse，therelationaldegreeissmall．Greyrelation-aldegreemodelhaslowerdemandonthenumberanddistribu-tionofthesamplesthanregressionanalysisanditisoftenusedtoquantitativecomparisonanalysisofdevelopmentandchan-gingsystem，soitissuitableforstudyingthedevelopingandchangingtrendofSichuanecologicalagriculture．Thespecificanalysismethodisasfollows：

LetthereferenceseriesY0j=｛X01，X02，…，X0n｝compari-sonseriesYij=｛Xi1，Xi2，…，Xim｝，（i=1，…，n，j=1，…，m），accordingtothegreytheory，thegreyrelationalcoefficientξijis：