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articleAbstract=耕地作为农业最主要的生产资料和农民最直接的劳动对象,是构成粮食综合生产能力的最基本,也是最重要的要素之一。分2个阶段从数量变化、区域变迁和利用结构等3个方面对1949年以来我国耕地资源的时间和空间变化进行研究,并对其原因进行了简要分析。, authors=张士功,邱建军,陈佑启,唐华俊, authorsList=张士功;邱建军;陈佑启;唐华俊, authorCompany=中国农业科学院农业自然资源与农业区划研究所 北京, correspAuthors=null, authorNote=null, correspAuthorsNote=张士功, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=GsL49zYbo7irogw3qLSzTA==, pdfFileSize=445606, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null)}, authors=null, keywords=[Keyword(id=1242118089731539702, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1242118083859517502, language=CN, orderNo=1, keyword=耕地资源), Keyword(id=1242118089798648567, tenantId=1146029695717560320, journalId=1146031591421210625, 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