长江经济带农业绿色发展区域性差异及收敛性研究

Research on Regional Differences and Convergence of Agricultural Green Development in the Yangtze River Economic Belt

基于长江经济带2012—2021年的省级面板数据,运用熵权法对该经济带9省2市的农业绿色发展水平进行评价,运用泰尔指数分析各区域之间农业绿色发展水平的差异,并运用σ收敛检验其收敛性。结果表明:(1)长江经济带农业绿色发展水平并不高,且呈曲折发展趋势。各区域中,中游地区农业绿色发展水平最高,下游居中,上游最低,但三者之间区别并不大。(2)区域间差异指数发展趋势和长江经济带整体指数发展趋势具有高度的相似性,中间虽有上升,但仍呈缩小趋势。长江经济带区域内农业绿色发展能力总体发展趋势极为平缓。各区域中,仅有上游区域差异表现出增大趋势,其余各区域虽有波动,但最终仍呈缩小趋势。(3)σ收敛发展趋势与泰尔指数发展趋势较为一致,长江经济带及中游和下游中间虽有波动,但最终各区域农业绿色发展水平差异表现出缩小趋势,具有一定的收敛特征,仅有上游在最终阶段表现出发散趋势,并未呈现出σ收敛特征。

Based on the provincial Panel data of the Yangtze River Economic Belt from 2012 to 2021,this study uses the entropy weight method to evaluate the agricultural green development level of 9 provinces and 2 cities in the economic belt,uses the Theil index to analyze the differences in agricultural green development level among regions,and usesσconvergence to test its convergence.The results showed that:①The level of agricultural green development in the Yangtze River Economic Belt is not high,and it shows a tortuous development trend.Among various regions,the middle reaches have the highest level of agricultural green development,with the downstream being in the middle and the upstream being the lowest.However,there is not much difference between the three.②The development trend of the inter regional difference index is highly similar to the overall index development trend of the Yangtze River Economic Belt.Although there is an increase in the middle,it still shows a decreasing trend.The overall development trend of agricultural green development capacity in the Yangtze River Economic Belt region is extremely flat.Among various regions,only the differences in the upstream regions showed an increasing trend,while the other regions showed fluctuations,ultimately showed a decreasing trend.③Theσconvergence development trend is relatively consistent with the development trend of the Thiel index.Although there are fluctuations in the Yangtze River Economic Belt and the middle and lower reaches,the differences in agricultural green development levels among different regions show a narrowing trend,with certain convergence characteristics.Only the upstream shows a divergence trend in the final stage,without showingσconvergence characteristics.