刘威, 陈佳梦. 数字经济对粮食生态效率的影响研究−基于13个粮食主产区面板数据的实证检验[J]. 中国生态农业学报 (中英文), 2024, 32(12): 1−12. DOI: 10.12357/cjea.20240228
引用本文: 刘威, 陈佳梦. 数字经济对粮食生态效率的影响研究−基于13个粮食主产区面板数据的实证检验[J]. 中国生态农业学报 (中英文), 2024, 32(12): 1−12. DOI: 10.12357/cjea.20240228
LIU W, CHEN J M. Impact of digital economy on grain eco-efficiency: Empirical test based on panel data of 13 major grain-producing areas[J]. Chinese Journal of Eco-Agriculture, 2024, 32(12): 1−12. DOI: 10.12357/cjea.20240228
Citation: LIU W, CHEN J M. Impact of digital economy on grain eco-efficiency: Empirical test based on panel data of 13 major grain-producing areas[J]. Chinese Journal of Eco-Agriculture, 2024, 32(12): 1−12. DOI: 10.12357/cjea.20240228

数字经济对粮食生态效率的影响研究基于13个粮食主产区面板数据的实证检验

Impact of digital economy on grain eco-efficiency: Empirical test based on panel data of 13 major grain-producing areas

  • 摘要: 有效缓解资源环境约束对粮食生产的威胁, 全面提升粮食生态效率水平, 是新形势下不断筑牢我国粮食安全“堡垒”的必然选择。本文基于2013—2021年中国13个粮食主产区的面板数据, 运用基准回归、中介效应、门槛效应等模型, 从多维度分析了数字经济对粮食生态效率的影响机制。研究结果表明: 数字经济对粮食生态效率具有显著的正向影响, 在一系列稳健性检验后结论仍然成立; 异质性分析表明, 数字产业化对粮食生态效率的促进作用更为显著, 且在北方地区和低粮食生态效率地区数字经济对粮食生态效率的促进作用更加明显; 中介效应表明, 数字经济通过提高农地经营规模和农业社会化服务, 间接推动粮食生态效率提升; 门槛检验结果表明, 数字经济对粮食生态效率的影响存在基于财政支农力度的双重门槛, 且呈现边际效应递增的非线性特征。因此, 未来应完善农村新型数字基础设施建设, 提高农地经营规模和农业社会化服务水平, 优化财政支农结构, 突出绿色政策的发展导向, 因地制宜制定数字经济与粮食生态效率的协同推进策略, 以促进粮食生态效率的持续提升。

     

    Abstract: Effectively alleviating the threat of resource and environment constraints on grain production and improving the level of grain eco-efficiency is the inevitable choice to continuously build the “fortress” of China’s grain security under the new situation. As a new economic form accompanying the change of information technology, digital economy can promote the high-quality development of grain industry through direct and indirect ways. Based on the panel data of 13 major grain-producing areas from 2013 to 2021, this study constructed digital economy indicators from two dimensions of digital industrialization and industrial digitalization, and measured the development level of digital economy and the level of grain eco-efficiency by using entropy weight method . The impact mechanism of digital economy on grain eco-efficiency was analyzed in multiple dimensions by using baseline regression, intermediary effect and threshold effect models, which was of great significance for clarifying the correlation between them. The results showed that the overall grain eco-efficiency of the 13 major grain producing areas showed an increasing trend from 2013 to 2021, which could be divided into three stages: rapid decline period, rapid increase period and slow increase period. Moreover, there were obvious spatial differences in grain eco-efficiency, which showed that the growth rate of grain eco-efficiency in the northern region was faster than that in the southern region. Digital economy had a significant positive impact on grain eco-efficiency, and the conclusion was still valid after a series of robustness tests, such as adjusting sample interval, eliminating outlier estimates and lagging explanatory variables. Heterogeneity analysis showed that digital industrialization had a more significant promoting effect on grain eco-efficiency than industrial digitalization, and the digital economy had a more significant promoting effect on grain eco-efficiency in northern regions and regions with low grain eco-efficiency. The intermediary effect showed that the scale of agricultural land management and agricultural social services had a significant promoting effect on improving grain eco-efficiency indicating that the digital economy could indirectly achieve the purpose of improving grain eco-efficiency by expanding the scale of agricultural land management and improving agricultural social services. The threshold test results showed that the digital economy had a double threshold of influence on grain eco-efficiency based on the fiscal support for agriculture, and presented a non-linear feature of increasing marginal effect, that was, the higher the fiscal support for agriculture, the more conducive the digital economy to improve grain eco-efficiency. In order to continuously improve the grain eco-efficiency, it is necessary to improve the construction of new rural digital infrastructure, increase the scale of agricultural production and the level of socialized services, optimize the structure of fiscal support for agriculture, highlight the development orientation of green policies, and adopt a differentiated collaborative promotion strategy of digital economy and grain eco-efficiency.

     

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