基于VAR模型的安徽省农村人口流动与粮食产量的关系研究
2017-07-15杜慧妍汪徐张燕张忠
杜慧妍+汪徐+张燕+张忠



摘要:基于1993-2014年安徽省的粮食总产量、流动人口比例、城镇化率等时间序列数据,采取构建VAR模型的方法,实证分析了安徽省农村人口流动对粮食产量的影响。研究结果表明,短期看,流动人口比例对粮食产量产生促进作用,主要是因为农村人口流出的增加有利于减缓人地矛盾,提升土地的边际效益;但城镇化率对粮食产量无明显的促进作用。另外,粮食播种面积、农村用电量和农用化肥施用量在短期内对粮食产量具有推进作用。基于此,提出保护耕地、加快发展现代农业的建议。
关键词:农村人口流动;粮食产量;VAR模型;安徽省
中图分类号:C939 文献标识码:A 文章编号:0439-8114(2017)12-2395-06
DOI:10.14088/j.cnki.issn0439-8114.2017.12.048
Research on the Relationship between Rural Population Float and Grain Yield In Anhui Based on VAR Model
DU Hui-yan,WANG Xu,ZHANG Yan,ZHANG Zhong
(College of Public Administration, Hohai University, Nanjing 210098, China)
Abstract: Based on the time series data of total grain yield, floating population rate and urbanization level in Anhui province during 1993-2014, a VAR model was constructed to analyze the influence of rural population float on grain yield. The results showed that, in the short term, the floating population rate had a good effect on grain yield, mainly due to the less pressure of the population-land contradiction and increased marginal benefit of land from the massive floating population. However, the urbanization level had no significant effect on grain yield. In addition, the grain sown area, rural electricity power consumption and chemical fertilizers had promotion effect on grain yield in the short term. Based on this, suggestions to protect arable land, to improve the permanent protection area of basic good farmland and to accelerate the development of agricultural modernization were put forward.
Key words: rural population float;grain yield;VAR model;Anhui province
农村劳动力流动与农业发展稳定以及农产品产量持续增长问题对于发展中国家农业发展来说是始终不可回避的现实问题[1]。随着中国经济的迅猛发展,工业化率不断提升,大规模的人口流动成为必然[2]。人口流动是指人口在地区间所做的各种各样短期的、重复的或周期性的运动。根据人口流动的空间,可将其划分为县内的、省内的、省际的以及城乡之间的人口流动等类型。在当前城镇化、市场化的背景下,农村人口流动成为人口流動的主力军。中国农村劳动力流动具有两种重要形式:一是农村人口加速迁移,表现在农村人口由农村向城镇转移;二是农村劳动力的非农就业,包括农村劳动力外出务工[1]。另外,随着改革开放不断深化,国内省际劳动力流动不断增加,从全国范围来看,农村劳动力的跨区域流动占省际人口迁移的80%以上[3]。……
