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1、EnvironmentalResearchLettersLETTER•OPENACCESSRelatedcontent-RecentgrasslandlossesareconcentratedCroplandexpansionoutpacesagriculturalandaroundU.S.ethanolrefineriesChristopherKWright,BenLarson,TylerJbiofuelpoliciesintheUnitedStatesLarketal.-Grasslands,wetlands,a
2、ndagriculture:thefateoflandexpiringfromtheConservationTocitethisarticle:TylerJLarketal2015Environ.Res.Lett.10044003ReserveProgramintheMidwesternUnitedStatesPhilipEMorefield,StephenDLeDuc,ChristopherMClarketal.-USagriculturalpolicy,landusechange,Viewthearticleon
3、lineforupdatesandenhancements.andbiofuels:arewedrivingourwaytothenextdustbowl?ChristopherKWrightRecentcitations-InvestigatingtheEfficacyofIntegratingEnergyCropsintoNon-ProfitableSubfieldsinIowaShyamK.Nairetal-TheGlobalFood-Energy-WaterNexusPaoloD'Odoricoetal-Ca
4、rbondioxideandwatervaporfluxesinwinterwheatandtallgrassprairieincentralOklahomaRajenBajgainetalThiscontentwasdownloadedfromIPaddress117.165.42.60on19/08/2018at13:32Environ.Res.Lett.10(2015)044003doi:10.1088/1748-9326/10/4/044003LETTERCroplandexpansionoutpacesag
5、riculturalandbiofuelpoliciesintheOPENACCESSUnitedStatesRECEIVED30October2014TylerJLark1,JMeghanSalmon1andHollyKGibbs1,2REVISED1NelsonInstituteCenterforSustainabilityandtheGlobalEnvironment(SAGE),UniversityofWisconsin-Madison,1710University17February2015Avenue,M
6、adison,WI,53726,USAACCEPTEDFORPUBLICATION2DepartmentofGeography,UniversityofWisconsin-Madison,1710UniversityAvenue,Madison,WI,53726,USA18February2015E-mail:lark@wisc.eduPUBLISHED2April2015Keywords:landchange,agriculture,biofuels,croplandexpansion,grasslandconve
7、rsionSupplementarymaterialforthisarticleisavailableonlineContentfromthisworkmaybeusedunderthetermsoftheCreativeCommonsAttribution3.0licence.AbstractAnyfurtherdistributionofCultivationofcornandsoybeansintheUnitedStatesreachedrecordhighlevelsfollowingthebiofuelst
8、hisworkmustmaintainattributiontotheboomofthelate2000s.Debateexistsaboutwhethertheexpansionofthesecropscausedconversionofauthor(s)andthetitleofgrasslandsandothercarbon-richec
