全球各国出口相似度格局与演化特征  

The Pattern and Evolution Characteristics of Export Similarity of All Countries in the World

作　　者：李恩康 陈娱[1,2,3,4] 牛博 Li Enkang;Chen Yu;Niu Bo(School of Geography,Nanjing Normal University,Nanjing 210023,China;Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application,Nanjing 210023,China;Key Laboratory of Virtual Geographic Environment of Ministry of Education,Nanjing Normal University,Nanjing 210023,China;Rural Revitalization Research Institute,Nanjing Normal University,Nanjing 210023,China)

机构地区：[1]南京师范大学地理科学学院,江苏南京210023 [2]江苏省地理信息资源开发与利用协同创新中心,江苏南京210023 [3]南京师范大学虚拟地理环境教育部重点实验室,江苏南京210023 [4]南京师范大学乡村振兴研究院,江苏南京210023

出　　处：《南京师大学报（自然科学版）》2021年第1期50-56,共7页Journal of Nanjing Normal University(Natural Science Edition)

基　　金：江苏省科研与实践创新计划项目(KYCX20_1175);国家自然科学基金项目(41701122、41430635、41701127、41701141).

摘　　要：基于经典的出口相似度指数定义,从纵向时间维度与横向空间视角出发,系统梳理与总结了2000—2016年全球113个国家在世界市场的出口产品相似程度及其与地理距离的关联,主要得出以下结论:全球各国之间的出口相似度总体上升,内部差异性却在缩小,发达国家之间的出口相似度明显高于发展中国家之间的出口相似度;出口相似度总和指数高值区多位于欧洲与北美等发达地区,而低值区则多分布在非洲、南美洲等欠发达地区.总体而言,出口相似度随着地理距离增大呈现“幂律递减”趋势,反映出全球出口产业结构的地理邻近性特征.Based on the classic definition of export similarity index(ESI),the similarity degree of export products of 113 countries in the world market and its correlation with geographical distance from 2000 to 2016 were systematically sorted out and summarized from the perspective of vertical time dimension and horizontal geography.The paper mainly draws the following conclusions:The ESI between each two country in the world increases on the whole,but the internal difference is narrowing.The ESI between developed countries is obviously higher than that between developing countries.The high value areas of sum index of export similarity are mostly located in developed regions such as Europe and North America,while the low value areas are mostly distributed in less developed regions such as Africa and South America.In general,ESI shows a trend of“power law decreasing”with the increase of geographical distance,which reflects the geographical proximity of the global export industrial structure.

关 键 词：出口相似度指数 出口贸易 全球市场 地理距离 空间格局 

分 类 号：K902[历史地理—人文地理学]