“双碳”目标下农业生态效率时空分异及影响因素研究——以山东省三大经济圈为例

Spatial and temporal differentiation of agricultural eco-efficiency and its influencing factors under the "double carbon" target: A case study of three economic circles in Shandong Province

摘要:

[目的]在“双碳”背景下农业生产要素的使用受到了限制,实现农业绿色生产,提高农业资源利用率对于尽快实现农业农村现代化显得尤为必要。山东省力争打造乡村振兴齐鲁样板,对于提升农业生态效率的需求更为迫切。[方法]基于此,本文首先选用SBM超效率模型综合测度山东省农业生态效率,其次利用标准差椭圆、自然断点分级法、Dagum基尼系数分析山东省农业生态效率空间演化趋势及空间发展差异,最后利用OLS回归分析山东省农业生态效率影响因素。[结果]整体来看山东省农业生态效率有了显著提升,省域内达到了较高水平,但三大经济圈间及经济圈内部各地市有显著差异,发展不均衡；农村电力设施、农村水利设施、土地规模化水平对山东省整体农业生态效率有显著促进作用,工业化水平、财政支农力度、农业生产技术水平对山东省整体农业生态效率具有显著抑制作用；此外各因素对三大经济圈农业生态效率的影响存在差异,具有明显的区域异质性。

关键词:山东省三大经济圈;农业生态效率;SBM模型;Dagum基尼系数;标准差椭圆

Abstract:

[Objective] Under the background of "double carbon", the use of agricultural production factors is limited. It is particularly necessary to realize agricultural green production and improve the utilization rate of agricultural resources for realizing agricultural and rural modernization as soon as possible. Shandong Province strives to build a model of rural revitalization of Shandong, and it is more urgent to improve agricultural ecological efficiency. [Methods] Based on this, this paper firstly used SBM super efficiency model to comprehensively measure agricultural eco-efficiency in Shandong Province, then used standard deviation ellipse and Dagum Gini coefficient to analyze the spatial evolution trend and spatial development difference of agricultural eco-efficiency in Shandong Province, and finally used benchmark regression model to analyze the influencing factors of agricultural eco-efficiency in Shandong Province. [Results] On the whole, agro-ecological efficiency in Shandong Province has been significantly improved, reaching a relatively high level within the province, but there are significant differences between the three economic circles and cities within the economic circle, and the development is not balanced. In addition, rural electric power facilities, rural water conservancy facilities, land scale level, industrialization level, financial support for agriculture, agricultural mechanization level, and economic development level have a significant impact on the improvement of agricultural ecological efficiency in Shandong Province.

Key words:Three economic circles of Shandong Province; Agroecological efficiency; SBM model; Dagum Gini coefficient; Standard deviation ellipse