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313()Vol.31No.320036Jour.ofNorthwestSci2TechUniv.ofAgri.andFor.(Nat.Sci.Ed.)June2003X(,611830)[],,,,;,,;[];;[]F321[]A[]167129387(2003)0320167208,[1],,,[25],,,,[6,7],,,[8],[9,10],[1113],,,,11.1,,,,,,,,,,M,(,),,2,,,:Rmi=PQmi(1),Rmi,Qmii;P,:Qmi=Qmi(Kmi,Qni)(2):5Qmi5Kmi0,52Qmi5K2mi0,5Qmi5Qni0,52Qmi5Q2ni0,Kmi,Qni,iQmi()Kmi,,:Cmi=PkmKmi+PnQni(3),CmiQmi;Pkm,,;Pn,,,Pn,Pn=Pn(Qni),:X[]2002212225[](1971-),,,,,Pmi(Kmi,Qni)=Rmi-Cmi=PQmi(Kmi,Qni)-PkmKmi-Pn(Qni)Qni(4),:P5Qmi5Kmi-Pkm=0(5)P5Qmi5Qni-Pn1+1M5PnöPn5QniöQniõ5(MQni)5Qni=0(6)(5),1É,Ê(MK)5Qmi5Kmi,ÊÉ,PkmöPPkmP,,1,(6),1M5PnöPn5QniöQni5(MQni)5QniiQniPn2,5(MQni)5Qni=1(6)Pn=P5Qmi5Qniö(1+1M1Gm),Gm=5QniöQni5PnöPn02,ÉP;ÊP5Qmi5Qni(5Qmi5Qni0,52Qmi5Q2ni0,Ê,,5Qmi5Qni,,2);ËP5Qmi5Qniö(1+1Gm),M2,2,2QniQn1Mk.;Kmi.iFig.1TheoptimumscaleofcorporationMk.Theefficiencyofcapital;Kmi.Thescaleofcorporationi2iPn.;Qni.iFig.2ThedemandofcorporationiformidfarmproducePn.Themarketpriceofmidfarmproduce;Qni.Thedemandquantityofcorporationiformidfarmproduce1.2,,,,,,N,,,;,,,,,Knj:Rnj=PnQnj(7),RnjQnjj;Pn,,Pn,Pn=Pn(Qnj)861()31:Qnj=Qnj(Knj)(Knj=Knj(Qnj))(8):dQnjdKnj0,d2QnjdK2nj0:Cnj=PknKnj(9),Cnj,Pkn,Knjj:Pnj(Qnj)=Rnj-Cnj=Pn(Qnj)Qnj-PknKnj(Qnj)(10),Pnjj,PndQnjdKnj1+1NdPnöPndQnjöQnjd(NQnj)dQnj-Pkn=0(11)2,d(NQnj)dQnj=1,(11):Pn=(PknödQnjdKnj)ö(1+1N1Gn),,Gn=dQnjöQnjdPnöPn0,1Gn-1,,1Gn(-1,0)3,Pkn,PknödQnjdKnj(dQnjdKnj0,d2QnjdK2nj0,,,,dQnjdKnj,,3);-11Gn0,01+1Gn1,(PknödQnjdKnj)ö(1+1Gn),N3,,3,3QnjQn3jPn.;Qnj.jFig.3ThesupplyoffarmerjpsmidfarmproducePn.Themarketpriceofmidfarmproduce;Qnj.Themidfarmproduceoffarmerj1.3++,,,,44É,Ê,Ë,,62,3,ABCD,e4Pn.;Qn.Fig.4ThemarketofmidfarmproducePn.Themarketpriceofmidfarmproduce;Qn.Thetransactionquantityofmidfarmproduce5Pn.;Qn.Fig.5ThevariationofmarketpoweranditpsinfluenceonthedistributionofsurplusPn.Themarketpriceofmidfarmproduce;Qn.Thetransactionquantityofmidfarmproduce1.3.154,5be,be;ae,aee,53,9613:,Sadef,Sdbge,Sfgc,M,5aeÊËM=1,,aeË;M,,aeÊ,be,be,MSdbge,MSadef,Me,,,M,SadeföM,SadeföM,M,,SadeföM,N1,5be,Sadef,,,SdbgeN,,,,NSdbgeöN,,,,5ee5,,1.3.2(6),,,4Êa,ae(11),,be,6(,6,,)a,b,6:(1)ae,,,(2)ae,,,,(3),,6Pn.;Qn.Fig.6ThevariationofproductivityanditpsinfluenceonthedistributionofsurplusPn.Themarketpriceofmidfarmproduce;Qn.Thetransactionquantityofmidfarmproduce,,:,,,,,,,,,M,,1.4,,,,(),,,,,3:(1),,,071()31,,(2),,(3),2,,,,,,,,,,(k),R=PQm(12)Qm=Qm(Qn)(13)Qn=Qn(k)(:k=k(Qn))(14)C=Pkk(15)P(Qn)=PQm(Qn)-Pkk(Qn)(16),P,Pk,R,Qm,Qn,C,kP:dQmdQn0,d2QmdQ2n0,dQndk0,d2Qndk20PdQmdQn=PködQndk(17)(17)7,7É,Ê,P,PdQmdQn,PkPködQndkQn,Pn,Pn=PdQmdQn=PködQndk,,Sabc,,cc,,,,,,,7Pn.;Qn.Fig.7ThesurplusoftaperedintegrationcorporationPn.Theinnertransferpriceofmidfarmproduce;Qn.Theinnertransferquantityofmidfarmproduce8Pn.;Qn.Fig.8ThesurplusoftaperedintegrationcorporationwithmidfarmproducemarketPn.Thepriceofmidfarmproduce;Qn.Thequantityofmidfarmproduce8,ABdd,dd,A,,,B,,D,,SabfeSabef:,,1713:,:,(),,,,,,,3,,,:;,3.1,,,4be,,99Pn.;Qn.Fig.9TheoriginoffranchisefeeanditpsinfluenceonthedistributionofsurplusPn.Thepriceofmidfarmproduce;Qn.Thequantityofmidfarmproduce9,,SadefSadc,Sfec,,,Sddec,PdPd,,QcPd,,Sdbe,,SadcSadec,,,,,,,PdQc,Sdbc,,,,,,,(1)94,9(),Pd(Pno)PdPno,,;PdPno,,,Pd,Qc,Pd=PnoPno,,(2)9,Sdbc,SadcÊ,Ê,ÊÊÊÊ(10A),d,Sabcg,d,Sadc+Sdbc,SgccÊÊ(10B),Sdbc,d,h,271()31Sadh,Shgcd,Sadc,SadhSadc,,,10Pn.;Qn.Fig.10ThepricevariationofultimatefarmproducemarketanditpsinfluenceonthedistributionofsurplusPn.Thepriceofmidfarmproduce;Qn.Thequantityofmidfarmproduce,,:,,1,1(),:(1),,,(2),,(3),,(4),3.2(),,,,;,,,,4,,,,,,,,,,,,,,,,[][1].[J].,2002,(7):43-47.[2].[M].:,2001.[3].[J].,2001,(5):4-8.3713:[4],.[J].,2002,18(1):96-98.[5].[J].,2002,25(1):102-106.[6],.[J].,2001,(8):55-57.[7].[J].,2002,(8):2-6.[8].+[N].,2002212202(C2).[9],.[J].,2002,(1):14-19.[10],.[J].,2002,(3):28-31.[11].[M].:,2001.[12].[M].,,,.:,1997.[13],.[M].,,,.:,2001.MicroeconomicsanalysisofcorporationplusfarmerpatternLIBin(DepartmentofEnvironmentandResource,DujiangyanCampus,SichuangAgricultureUniversity,Dujiangyan,Sichuang611830,China)Abstract:Thisarticlethoroughlyanalysedthecorporationplusfarmerpatternwithmicroeconimicsandindustrymodelatpresenttime.Theresultisthat:corporationplusfarmerpatterncanincreaseproductivitybeforethecorporationmarketpowerisweakened,buthasnogreatefficiencyinincreasingfarmerincome,ifthepatternisemphasizedoverly,corporationpspowerwillbestrengthened,butthefarmerpsinterestwillbeeroded;thesounddevelopmentpatternshouldbebasedonthefollowingthreeitems:takingthemarketasconnection,takingthefreecirculationofproductionelementsaspremiseandtakingcompetitionfullybetweencorporationsasguarantee.Keywords:corporationplusfarmer;marketpower;microeconomicsanalysis(166)Structureoptimizationsupportsystemforagriculture,forestry,ecologicalandeconomicsystemWUGuang-hong1,ZHENGHong-qi2(1CollegeofManagement,TianjinUniversity,Tianjin300072,China;2TianjinAcademyofEnvironmentalSciences,Tianjin300191,China)Abstract:Aspatialstructureoptimizationdecisionsupportsystemforagro2forestryecologicalandeconomicsystembasedonGeographicalInformationSystem(GIS)wasstudiedinthispaper.ThesystemintegratedGISw