【摘要】 基于Esteban-Marquillas拓展模型,从总量和分量两个层次测度、分析1997—2017年长江经济带农业整体及各产业的规模、结构演变。研究表明:长江经济带农业规模与结构的时空演变较为稳定。从空间分布看,在增长优势方面为下游>中游>上游,在结构劣势和竞争优势方面为上游>中游>下游,在资源配置合理程度方面为下游>上游>中游;农业各产业结构的空间分布及演变存在区域差异,但中下游地区的演变趋势较一致。时序变化上,农林牧渔业各分量波动较大;份额分量、结构分量各区域具有一致性,竞争分量、分配分量区域差异大。长江经济带迫切需要加快农林牧渔业规模结构的调整,从依赖增长优势转向高质量发展,从以数量为主向数量质量效益并重转变。下游需注重提升竞争力,中游需侧重优化资源配置,上游则应重视改善结构。更多还原

【Abstract】 Based on Esteban-Marquillas extended model, this paper measures and analyses the scale and structure evolution of agriculture as a whole and industries in the Yangtze River Economic Belt from 1997 to 2017. The results show that the spatial and temporal evolution of agricultural scale and structure in the Yangtze River Economic Belt is relatively stable. From the perspective of spatial distribution, in terms of growth advantages, it shows the trend of downstream > midstream > upstream; in terms of structural disadvantages and competitive advantages, the trend is upstream > midstream > downstream; in terms of rational allocation of resources, the trend is downstream > upstream > midstream; there are regional differences in spatial distribution and evolution of agricultural industrial structure, but the evolution trend of the midstream and downstream areas is relatively consistent. In terms of time series, the components of agriculture, forestry, animal husbandry and fishery fluctuate greatly; the share components and structure components are consistent in different regions, and the competition components and distribution components are different in different regions. The Yangtze River Economic Belt urgently needs to speed up the adjustment of scale structure of agriculture, forestry, animal husbandry and fishery, shift from relying on growth advantages to high-quality development, and shift from focusing on quantity to focusing on both quantity and quality benefits. The downstream should focus on enhancing competitiveness, the middle should focus on optimizing the allocation of resources, and the upstream should focus on improving the structure.更多还原