TheEvaluationonEcolog_省略_reyRelationalAn

生态农业

Δmin+ρΔmaxΔij+ρΔmax

Intheformula,Δij=︳X0i-Xij︳:Δmin=minmin︳X0j-Xij︳;

1≤i≤n1≤j≤m

=maxmax︳X-X︳;isidentificationcoefficient,ac-Δmaxρ0jij

ξij=

cordingtothecurrentpractice,itsvalueis0.5.Thengreyrela-tionaldegreeγiis:

1m

γi=∑ξ

mj=1ij

1.1.2Constructionofevaluationindexsystem.Benefitsof

sotheevaluationthesystemisthedirectaimsoughtbypeople,

onthedevelopmentofSichuanecologicalagriculturaldevelop-mentisbasedontheevaluationonthecomprehensivebenefitsofindexsystem.ThepaperconstructedthecomprehensiveevaluationsystemforSichuanecologicalagriculturebyusingthefrequencystatisticsaccordingtothefeaturesandcharacter-isticsofSichuanecologicalagriculturalconstruction,byflowingtheprincipalsofintegrity,feasibilityanddynamicity,aswellastheecological,economicandsocialbenefits[5-7].Thespecificevaluationsystemincludescontentfromthreeaspectsand14participatingfactors.Thefirstoneisagriculturaleconomicde-velopmentindex,includingnetincomepercapitaofruralhousehold,agriculturallaborproductivity,agriculturallandpro-ductivityandsocialfixedcapitalinvestmentinagriculture,for-est,animalhusbandry,sidelinebusinessandfishery.Thiskindofindexesareusedtoreflecttheagriculturaleconomicdevelop-mentallevelintheprocessofdevelopingagriculturaldevelop-ment.Thesecondoneisagriculturalecologicalindexes.Amongthem,theenvironmentqualityindexesincludepreven-tionandcontrolrateofforestdiseasesandpests,forestcover-agerateandpopularityofruralhouseholdtoilets;resourceuseindexesincludeeffectiveirrigationrate,intensityoffertilizerus-Table1

1≤i≤n1≤j≤m

ageandagriculturalenergyconsumptionindex.Thetwokindsofindexesreflecttheecologicalenvironmentchangeinthede-velopmentofagricultureandresourceusesituationofagricul-turalproductionrespectively.Thethirdoneissocialdevelop-mentindexes,includingnaturalgrowthrateofpopulation,En-gelcoefficientofruralhouseholds,andapplicationofscienceandtechnologyresultsinagriculture,forestry,animalhusband-ry,sidelinebusinessandfishery,percapitagrainproduction.Theindexismainlyusedtoreflectthesocialdevelopmentde-gree.

1.1.3Determinationofindexweight.Inclassicalgreyanaly-sis,thecalculationofgreydegreesupposesthattheindexeswithequalweights.Butinviewofthedifferentfeaturesandcharacteristicsofeachindex,andthedifferentcontributionde-greeofevaluation,sothepaperchangestheweightstogivetheindexesnewweights.Inthefrequentlyusedweightingmethods,theobjectiveweightingmethod(forexamplevariationcoefficient,entropymethodandsoon)doesnotrelyonpeople'ssubjectivejudgmentandhasstrongobjectivefeaturecomparingwithsubjectiveweightingmethod(forexampleAHPmethodandDelphimethod).Therefore,thepaperadoptsthewidelyusedvariationcoefficientmethodinobjectiveweightingmethodtodeterminetheweightofindexestoletthesamplestatisticstodeterminethedistributionofweight,soastoavoidtheinfluenceofsubjectivefactors.

Thespecificweightofeachindexwjis:

CVxi

wi=n

∑CVxi

i=1

Intheequation,thevariationcoefficientCVxi=

sdxi

.xi

ComprehensiveindexsystemandindexweightofSichuanecologicalagriculture

Specificindex

x1referstopercapitaincomeofruralhouseholds(0.0827)

x2referstoagriculturallaborproductivity(0.1459)

Meaningoftheindex

ReflectingthelivingsituationoffamersGrossproductionofagriculture,forestry,ani-malhusbandryandfishery/agriculturallabors,isthecomprehensiveeconomicindexthatre-flectstheagriculturallaborproductivityofanarea

Agriculturalgrossproduction/totalsownacre-ageofagriculturalcrops,directlyreflectstheeconomicinterestsofagriculturalproductionCurrencyexpressionofconstructingagricul-ture,forestry,animalhusbandry,sidelinebusinessandfisheryandtheworkloadsofpur-chasingfixedassets

Comprehensivepreventionandcontrolareaofdiseasesandpest/areaofdiseasesandpestsAreaofforest/totallandarea,referringtheim-portantroleplayedbytheindexinprotectingtheimprovingthemacro-ecologicalenviron-mentofthearea

Oneoftheindexesthatrepresentrurallivingenvironment

Effectiveirrigationlandarea/totalareaoffarmland

Quantityoffertilizeruse/sownacreageofagri-culturalcrops

Evaluationindex

Agriculturaleconomicdevel-opmentindex

x3agriculturallandproductivity(0.0757)x4socialfixedcapitalinvestmentonagricul-ture,forestry,animalhusbandry,sidelinebusinessandfishery(0.2033)

Ecologicalindex

Environmentqualityindex

x5preventionandcontrolrateofforestdis-ease,pests(0.0297)

x6forestcoverage(0.0461)

Resourceuseindex

x7popularityofruralhouseholdtoilets(0.0676)

x8effectiveirrigationrate(0.0323)x9intensityoffertilizeruse(0.0570)

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