主管单位:中国科学技术协会
主办单位:中国地理学会
承办单位:华东师范大学

World Regional Studies ›› 2026, Vol. 35 ›› Issue (1): 18-31.DOI: 10.3969/j.issn.1004-9479.2026.01.20240986

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Evolution and influencing factors of trade network among African countries

Jiale LIN1,2(), Canfei HE1,2()   

  1. 1.College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
    2.Lincoln Institute Center for Urban Development and Land Policy, Peking University, Beijing 100871, China
  • Received:2024-11-11 Revised:2025-05-09 Online:2026-01-15 Published:2026-01-22
  • Contact: Canfei HE

非洲国家间贸易网络演化特征及其影响因素

林佳乐1,2(), 贺灿飞1,2()   

  1. 1.北京大学,城市与环境学院,北京 100871
    2.北京大学,林肯研究院城市发展与土地政策研究中心,北京 100871
  • 通讯作者: 贺灿飞
  • 作者简介:林佳乐(2002—),男,硕士,研究方向为经济地理、国际贸易,E-mail:ljl22349828@stu.pku.edu.cn
  • 基金资助:
    国家自然科学基金面上项目(42171169)

Abstract:

Based on the trade data among African countries from 2002 to 2020 provided by the BACI dataset, this paper adopted social network analysis methods to study the evolving characteristics of the trade network among African countries, and expanded the gravity model based on multi-dimensional proximity to explore its influencing factors. The results show that: ①The network density of the trade network among African countries has increased, while the average distance has decreased, leading to a progressively complex trade network structure. ②The reciprocity of the trade network among African countries has declined, and it presents a "core-semi periphery-periphery" structure. South Africa remains at the core of the trade network, while most small countries, island nations, and landlocked countries are on the periphery. ③The trade network among African countries exhibits typical "structural holes", with regional trade hub countries acting as intermediaries for communication among small and medium-sized economies. ?Simultaneously, the small-world networks characterized by triadic reciprocity have emerged and developed extensively among African countries, signifying significant regional integration outcomes.?④The expansion of economic scale, improvement of infrastructure, and existence of geographic corridors promote trade among African countries. Cultural proximity, historical colonial ties, the frequency of national interactions and international trade agreements are important driving forces of trade among African countries. Conversely, the expansion of geographical and institutional distances exerts a constraining effect on trade among African countries.

Key words: trade network among African countries, social network analysis, gravity model of trade, multi-dimensional proximity

摘要:

基于BACI数据集,获取2002—2020年非洲国家间贸易数据,采用社会网络分析法,分析非洲国家间贸易网络的演化特征,并基于多维邻近性框架对贸易引力模型进行拓展,探究非洲国家间贸易网络演化的影响因素。结果表明:①非洲国家间贸易网络的密度总体上升,平均距离总体缩短,贸易网络结构复杂度逐渐提高;②非洲国家间贸易网络的对称性总体下降,呈现出“核心-半边缘-边缘”的空间结构。南非始终处于贸易网络的核心,而大部分小国、岛国和内陆国则处于贸易网络的边缘。③非洲国家间贸易网络存在典型的“结构洞”,地区贸易枢纽国充当沟通中小经济体的中介。同时,非洲国家间三元互惠的小世界网络已经形成并广泛发育,区域一体化成效显著;④经济规模的扩大、基础设施的改善和地理通道的存在对非洲国家间贸易具有促进作用。文化邻近性、殖民历史联系、国家互动频率和国家间贸易协定是非洲国家间贸易增长的重要推动力,而地理距离和制度距离的扩大对非洲国家间贸易具有抑制作用。

关键词: 非洲国家间贸易网络, 社会网络分析, 贸易引力模型, 多维邻近性