摘要
【目的】提高长江经济带的农业碳生产率,推动长江经济带农业高质量发展。【方法】测算长江经济带农业碳生产率,对其进行空间相关性检验,进而进行收敛性分析。【结果】(1)长江经济带农业碳生产率在整体上呈逐年增长态势,且呈现出从上游到中游、下游逐次递增的格局。(2)长江经济带农业碳生产率存在正向空间自相关关系,并且空间自相关程度表现出波动上升趋势。(3)长江经济带农业碳生产率存在α收敛,即农业碳生产率的地区差异随着时间的推移而缩小。长江经济带及各区域农业碳生产率均存在β收敛和条件β收敛,即落后地区的农业碳生产率增长率快于发达地区,各地区的农业碳生产率最终收敛到自己的稳态水平;空间效应加快了长江经济带农业碳生产率的β收敛速度。(4)农业经济发展水平及耕地面积对农业碳生产率增长率均具有负向影响,农村居民收入的提高和种植结构的优化则有利于农业碳生产率的提升。【结论】长江经济带农业碳生产率存在区域差异,但总体呈现上升趋势。
【Objective】Improve the agricultural carbon productivity of the Yangtze River Economic Belt and promote the high-quality agricultural development of the Yangtze River Economic Belt.【Meth⁃od】The agricultural carbon productivity of the Yangtze River Economic Belt was calculated,and its spa⁃tial correlation was tested,and then the convergence analysis was carried out.【Result】(1)The agricul⁃tural carbon productivity of the Yangtze River Economic Belt showed an increasing trend year by year,and showed a pattern of gradual increase from the upper reaches to the middle reaches and the lower reaches.(2)There is a positive spatial autocorrelation of agricultural carbon productivity in the Yangtze River Economic Belt,and the degree of spatial autocorrelation shows a fluctuating upward trend.(3)There is a convergence of agricultural carbon productivity in the Yangtze River Economic Belt,that is,the regional differences of agricultural carbon productivity decrease with the passage of time.There are convergence and conditional convergence in agricultural carbon productivity in the Yangtze River Eco⁃nomic Belt and other regions,that is,the growth rate of agricultural carbon productivity in the backward regions is faster than that in the developed regions,and the agricultural carbon productivity in each re⁃gion finally converges to its own steady-state level;Spatial effect accelerates the convergence speed of ag⁃ricultural carbon productivity in the Yangtze River Economic Belt.(4)The level of agricultural econom⁃ic development and the area of cultivated land have a negative impact on the growth rate of agricultural carbon productivity.The improvement of rural residents'income and the optimization of planting struc⁃ture are conducive to the improvement of agricultural carbon productivity.【Conclusion】There are region⁃al differences in agricultural carbon productivity in the Yangtze River Economic Belt,but the overall trend is increasing.
作者
李颖
LI Ying(School of Economics,Anhui University,Hefei 230039,China)
出处
《湖南生态科学学报》
2021年第4期84-91,共8页
Journal of Hunan Ecological Science
关键词
长江经济带
农业
碳生产率
收敛性
Yangtze River Economic Belt
agriculture
carbon productivity
astringency
