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時間：2025-05-15 14:46:58 來源：網絡整理編輯：探索

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Chineseresearchersissueorganiccarbonmapforglobalblacksoilregions_GuangmingOnlineBEIJING,Nov.23(Xinhu

Chineseresearchersissueorganiccarbonmapforglobalblacksoilregions_GuangmingOnlineBEIJING,Nov.23(Xinhua)--AgroupofChineseresearchersissuedadatamapofthesoilorganiccarbon(SOC)contentforglobalblacksoilregions,sheddinglightonthequantificationofagro-ecosystemsandglobalfoodsecurity,accordingtotherecentissueofthejournalRemoteSensingofEnvironment.Researchhasshownthatcarboncycleisinfluencedbyagriculturalsoils.TheaccuratelymappingofSOCcontentcanhelptoclarifythecarbonsequestrationcapacity,quantifyagroecosystemandcontributetoglobalfoodsecurity.ButitisstillchallengingtoacquirereliableSOCcontentdatasets.ThestudypublishedinthejournalwasdonebyresearchersfromtheNortheastInstituteofGeographyandAgroecologyundertheChineseAcademyofSciences.Accordingtothejournaltheresearcherscollectedmorethan191,000scenesofremotesensingimagesandelevationmodeldata,andusedmeta-learningconvolutionalneuralnetworkmodeltogeneratehigh-resolutiondatamapforglobalblacksoilregions.ThedatainthestudyindicatesthattheSOCcontentintheglobalblacksoilregionsshowsadecreasingtrend,whichcanbedividedintosignificantdecreasephasefrom1984to2000,andmoderatedecreasephasefrom2001to2021.TheresultfromthestudyalsoshowsthatthefourmajorblacksoilregionsintheworldhavedifferentratesofSOCdecline.TheSOCdeclineratesoftheRussian-UkrainianPlainandthePampasPlainofSouthAmericaarehigherthanthoseofthenortheastChinaandtheMississippiRiverBasininNorthAmerica.Thestudyshowsthatthisresearchcanprovideareferenceforthelong-termobservationofsoilandcroppropertiesatmoderateandhighresolutionsglobally.Editor:DisclaimerTheviewsandopinionsexpressedinthisarticlearethoseoftheauthor's,GMW.cnmakesnorepresentationsastoaccuracy,suitability,orvalidityofanyinformationonthissiteandwillnotbeliableforanyerrors,omissions,ordelaysinthisinformation.

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