“一带一路”倡议的农业价值链关联效应——基于Eora26跨国投入产出数据的双重差分检验

Effect of the Belt and Road Initiative on Agricultural Value Chain Linkages:Evidence from Eora 26 Input-Output Data

文章使用Eora26跨国投入产出数据,通过增加值分解计算了中国农业部门在进出口过程中的增加值跨境次数,测度了中国与“一带一路”沿线国家的农业价值链关联效应。研究表明:“一带一路”倡议通过延伸农业产业链长度、削减农业贸易成本显著提升了农业价值链关联。其中,陆上丝绸之路沿线国家对应的倡议实施效应显著高于海上丝绸之路沿线国家;邻近“一带一路”沿线国家对应的倡议实施效应显著高于非邻近“一带一路”沿线国家;倡议实施效应显著存在于低风险经济体,但不存在于高风险经济体中;相较于一般贸易伙伴国,与中国签订自由贸易协定的“一带一路”沿线国家对应更高的倡议实施效应。为此,应在既有的合作框架下,拟定层次更多、水平更高、范围更大的农业合作协定,对沿线国家进行市场细分与风险评估,推动沿线国家在跨境电子商务、农产品检验检疫、农业产业园区建设等领域的深度合作。

The Belt and Road Initiative(BRI)aims to create a new paradigm of China’s opening-up. Using the input-output data from Eora 26 database from 1995 to 2015,this paper measures the agricultural value chain linkages(AVCL)by fun-tuning the cross-border times indicator,examines the policy effect of the BRI on AVCL,and analyzes the potential mechanism and heterogeneity of the policy effect. We find that the implementation of the BRI has significantly promoted the AVCL between China and economies along the Belt and Road from the perspectives of both value-added outflow and inflow,which is confirmed by a series of effectiveness checks. The heterogeneous effect analysis suggests that economies along the overland Silk Road and in areas adjacent to China get stronger AVCL promotion,and the policy effect is significant for economies with low political and investment risks,but not in those with high political and investment risks. We also explore the potential interference effect of free trade agreements(FTA)using triple difference models,which indicates that the AVCL promotion effect of the BRI is robustly significant,but FTA partner countries get stronger AVCL promotion. Also,we find that the policy effect of the BRI on AVCL is mainly achieved by reducing agricultural trade costs and extending agricultural production lengths. The above results have important policy implications:First,under the existing cooperation mechanism,it is necessary to formulate advanced agricultural cooperation agreements,and the quasi-public goods role of BRI should be fully utilized in the field of international food security and high-quality agricultural development.Second,China can take advantage of its own agricultural production capacity,identify the heterogeneity of the target market,distinguish the comparative advantages of different markets in the cooperation of primary agricultural products,agricultural semi-finished products,and agricultural capital products,take into account the political environment and business operations of different markets,and formulate differentiated agricultural cooperation policies. Third,countries along the Belt and Road should promote cooperation in the fields of cross-border e-commerce,agricultural product inspection,and construction of agricultural industrial parks,so as to reduce the cost of cross-border agricultural trade and extend the cross-border agricultural value chains.