emergy analysis of the system in dongting lake agricultural eco-economic area of hunan province

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1、MeteorologicalandEnvironmentalResearch2013，4(11)：63—66Editor．PingSongProofreader．PingSongEmergyAnalysisoftheAgriculturalEco--economicSysteminDongtingLakeAreaofHunanProvinceYulinZhu，，ChangTan’，MingjieLi’，YuziLong，MaoxiWang，MaozhangHou，XiaominLi1．SchoolofEconomics，CentralSouthUniversityofForestryandTe

2、chnology，Changsha410004，China；2．AgriculturalandForestryEconom-icsResearchCenter，CentralSouthUniversityofForestryandTechnology，Changsha410004，ChinaAbstract『Objective]Theresearchaimedtodiscussace．eficiencyoftheagro．ecosysteminDongtingLakeareaofHunan．『Method]Byreferringtoemeresearchmethod，emergystructu

3、re，functionandeficiencyofthesystemwereanalyzedaccordingtoemergyinput—outputdataofthesy~emjn2009．[Result]Thesystemhaddevelopedeconomy，andmechanizationandmodernizationdegreeswerehigher．Emergyo~putofthesy~emwasunbalanced。andmarketpricingoftheagriculturalproductwassignificantlylower．especiallyfarmingpro

4、duct．Seenfr0msustainabledevelopmentindexandenvironmentalloadingratioofthesystem．thesystemwasfulofvitalityanddevelopmentpotentia1．ThepressureofnaturaIresourcesandenvironmentwasnotverygreat，butthesystemacoommodatedtoomanypopulations．『Conclusion]Basicdirectionoftheagricultur-aIpolicyjnthezonewasfurther

5、shorteningjndustriaIandagriculturaIpricescisors，continuingtoimplementpriceprotectionofthefarmingproduct，adjustingagriculturalandproductstructuresandtransferringsurpluslabor．KeywordsEmergYanalysis；Agro-ecosystem；DongtingLakearea：C：hinaDongtingLakeareaisIocatedatnorthHunan．andre『erstionandeficiencyoft

6、heagro—ecosysteminDongtingLakeareatoChangde，YiyangandYueyang．Inthetheory，DongtingofHunanProvincewasconducted，providingsomereferenceLakeareashouldonlyincludepolderareaadjacenttoDongtingbasisforsustainabledevelopmentoftheagricultureintheLakeandotherplainareasdirectlyafectedbyDongtingLakezone．andneedin

7、gpolderprotection．Intheresearch．DongtingLakeareaincludesdikeareaandprotectedpolderat“fourrivers“1ResearchmeIthodanddatasinkdefinedinManagementandDevelopmentofDongtingLake1．1ResearchmethodemergytheoryE