“一带一路”建设背景下中国区域空间响应差异及形成机制

运用媒体报道的国家间合作事件大数据，构建国内区域参与“一带一路”建设的响应指数模型、合作流量模型和影响因素回归模型，分析中国国内区域主动与沿线国家开展合作的空间异质性，定量刻画合作流量（空间交互）的格局特征，并剖析响应差异形成的影响因素。研究发现：①2010—2019年响应指数变化呈现出普遍较快增长的态势。省域单元响应指数的空间差异较小，而市域单元响应指数的空间差异大，反映出明显的大尺度均衡化、小尺度集聚化的尺度效应。②国内区域与沿线国家的首位合作流量呈现地理临近性特征，东部沿海省份与东南亚、西亚及中东合作联系密切，而边境省份则具有较明显的边境贸易特征。合作流量网络的区位依赖特性突出，流量网络结构不断复杂，小流量流线始终占据多数，大流量、长距离流线数量逐年增加，辐射范围显著扩大。③经济规模、对外投资水平、开放程度以及陆路交通可达性，对国内区域响应“一带一路”建设具有明显的积极推动作用，国家政策的区域效应逐渐体现。

Differences and formation mechanisms of regional spatial response in China under the Belt and Road Initiative: An application of massive cooperation events data

Based on the inter-country related events which have been reported by the news media, the regional response index model, cooperative traffic model and influencing factors regression model were constructed. The degree of active response between domestic regions (provincial and municipal) and countries along the Belt and Road were analyzed. Then this study quantitatively described the pattern of cooperative flows, and analyzed the influence factors of the response differences. The research finds that: (1) The change in response index showed a generally rapid growth trend. The spatial difference of the provincial unit response index was narrowed, and the spatial difference of the municipal unit response index became larger, reflecting the obvious scale effect (large-scale equalization and small-scale agglomeration). (2) The top1 cooperation flows between domestic regions and countries along the Belt and Road shows the geographic proximity effect; the eastern coastal provinces have close cooperation with Southeast Asia, West Asia and the Middle East, while the border provinces have obvious border trade characteristics. The cooperative traffic network is constantly complicated, and the small traffic stream line is always in the majority. The number of large-flow and long-distance stream lines increases year by year, and the radiation range is significantly expanded. (3) The scale of economic development, the level of foreign investment, the degree of openness, the accessibility of land transportation played an obviously positive role in the domestic regional response to the Belt and Road construction, and the regional effects of national policies have been significantly reflected.