碳排放约束下湖北省粮食绿色生产技术效率测度及其时空差异研究

Study on the green production technology efficiency measurement and its spatial-temporal difference of grain in Hubei Province from the perspective of carbon emission constraints

采用方向距离函数,以粮食生产碳排放作为非合意产出,对湖北省17个市(州)1998—2017年粮食绿色生产技术效率进行了测算,在此基础上对粮食生产碳排放和粮食生产投入冗余率进行了分析和比较。研究表明,从时间上看,湖北省粮食绿色生产技术效率较高,但粮食生产碳排放总量和投入冗余率呈波动式变化趋势;从空间上看,湖北省各市(州)碳排放量差异明显,襄阳市最高,神农架林区最低,各投入要素产生投入冗余的地区集中在鄂州、黄石等6个市。最后提出要建立粮食生产奖惩和补偿机制,加强粮食种植者的绿色生产知识培训,加强绿色粮食产品的产销对接,以推动粮食绿色生产。

Using the directional distance function,and taking the carbon emissions from grain production as the non-desirable out⁃puts,the green technical efficiency of grain production of 17 cities(prefectures)in Hubei Province from 1998 to 2017 was calculated.On this basis,the carbon emissions from grain production and the redundancy rate of input in grain production were analyzed and com⁃pared.The results showed that,from the view point of time,the green technical efficiency of grain production in Hubei Province was relatively high,but the total carbon emissions and input redundancy of grain production in Hubei Province fluctuated during the in⁃spection period.From the view point of space,the difference of carbon emissions was obvious among cities(prefectures)in Hubei Prov⁃ince,Xiangyang City was the highest and Shennongjia Forestry District was the lowest.The areas where the input factors generate in⁃put redundancy were concentrated in six cities,such as Ezhou City and Huangshi City.In order to promote the green production of grain,it was necessary to establish the mechanism of rewards,punishments and compensations for grain production,strengthen the training of green production knowledge for grain growers,and reinforce the docking of production and marketing of green grain products.