钱龙,管理学博士,南京财经大学粮食和物资学院教授,硕士生导师,博士生副导师,获江苏省“双创博士”和江苏高校“青蓝工程”优秀青年骨干教师人才称号,是第二批全国粮食和物资储备青年拔尖人才。目前兼任中国粮食经济学会理事,《中国土地科学》等8本期刊的(青年/学科)编委。近五年来,主持和参与国家自然科学基金面上项目、国家社科基金重点项目和重大项目10多项,出版专著2部,在国内外期刊《中国软科学》、《自然资源学报》、《改革》、《中国农村经济》、《农业经济问题》、Land Use Policy、Resources、Conservation and Recycling、Economic Modelling发表核心期刊论文60余篇,获各类学术奖励10余次,撰写的研究报告获得党和国家领导人、省部级领导肯定性批示20余项。
To verify whether the division of food functional zones affects the integrated development of urban and rural areas in China, this study takes the establishment of major grain-producing areas in 2004 as a quasi-natural experiment study object, and utilizes a Difference-in-Differences (DID) model to examine the impact of the major grain-producing area policy on the urban-rural income gap and its underlying mechanisms. The study finds that: 1) The establishment of major grain-producing areas significantly widens the urban-rural income gap. The income gap between urban and rural areas in these regions is larger compared to those in non-major grain-producing areas. This conclusion is robust confirmed by various robust tests including variable substitution, sample adjustment, and the use of a PSM-DID model. 2) The mechanism analysis indicates that the allocation of family labor resources and corresponding income structure, urban bias in local fiscal expenditure. The regional land use structure are the key pathways, through which the establishment of major grain-producing areas affects the urban-rural income gap. 3) Contextual analysis shows that industrial structure has a positive moderating effect on the impact of the establishment of major grain-producing areas. This study suggests that the main production areas have delayed the process of local urban-rural integration while taking on heavy responsibiltiy of ensuring national food security. These findings provide valuable insights for future improvements in the supporting policies for major grain-producing areas.
钱龙,管理学博士,南京财经大学粮食和物资学院教授,硕士生导师,博士生副导师,获江苏省“双创博士”和江苏高校“青蓝工程”优秀青年骨干教师人才称号,是第二批全国粮食和物资储备青年拔尖人才。目前兼任中国粮食经济学会理事,《中国土地科学》等8本期刊的(青年/学科)编委。近五年来,主持和参与国家自然科学基金面上项目、国家社科基金重点项目和重大项目10多项,出版专著2部,在国内外期刊《中国软科学》、《自然资源学报》、《改革》、《中国农村经济》、《农业经济问题》、Land Use Policy、Resources、Conservation and Recycling、Economic Modelling发表核心期刊论文60余篇,获各类学术奖励10余次,撰写的研究报告获得党和国家领导人、省部级领导肯定性批示20余项。
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钱龙,管理学博士,南京财经大学粮食和物资学院教授,硕士生导师,博士生副导师,获江苏省“双创博士”和江苏高校“青蓝工程”优秀青年骨干教师人才称号,是第二批全国粮食和物资储备青年拔尖人才。目前兼任中国粮食经济学会理事,《中国土地科学》等8本期刊的(青年/学科)编委。近五年来,主持和参与国家自然科学基金面上项目、国家社科基金重点项目和重大项目10多项,出版专著2部,在国内外期刊《中国软科学》、《自然资源学报》、《改革》、《中国农村经济》、《农业经济问题》、Land Use Policy、Resources、Conservation and Recycling、Economic Modelling发表核心期刊论文60余篇,获各类学术奖励10余次,撰写的研究报告获得党和国家领导人、省部级领导肯定性批示20余项。
本研究的核心解释变量为粮食主产区设立,也就是交互项group i ×post t。其中,group i表示是否为粮食主产区,当省(市、自治区)i为粮食主产区时,取值为1,否则取值为0。post t 表示时间虚拟变量,考虑到粮食主产区于2004年正式设立,因此,当时间在2004年及以后,取值为1,否则为0。
式中:i为省(市、自治区);t为年份(1997—2020);gap it 为城乡收入差距;group i 为是否为粮食主产区虚拟变量;post t 为粮食主产区设立时间的虚拟变量;Xi 为一系列控制变量;μi为省份固定效应,为时间固定效应;εit 为随机扰动项。交互项group i ×post t 的系数β1为待评估的粮食主产区设立的政策效应,即粮食主产区设立对城乡收入差距可能的影响。
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