北极航线经济圈经济联系网络空间格局研究

全球气候变暖，北极海冰加速融化促使北极航线开通成为了可能，北极的航运价值愈发凸显，并对沿线国家经济联系产生重要影响.利用引力模型和可达性理论分析北极航线经济圈经济联系网络的空间结构及网络特征，结果发现：北极航线开通促使部分节点中心度上升，北极航线经济圈经济联系网络存在显著的核心—边缘结构；北极航线开通促进了北极航线经济圈经济联系网络密度的提升，国家间联系逐渐密切；同时北极航线开通后绝大部分西欧国家可达性水平较高，而东北亚国家的可达性水平较低，但东北亚国家可达性水平提升幅度较大.

Spatial pattern of economic connection network of the Arctic Route Economic Circle

Global warming and the accelerated melting of Arctic sea ice have made it possible to open the Arctic Route， and the shipping value of Arctic Route is becoming more prominent and has an important impact on the economic ties of countries along the route. In this paper， the gravity model and accessibility theory were used to analyze the spatial structure and network characteristics of the economic connection network of the Arctic Route Economic Circle， and the results are shown as follows. The opening of the Arctic Route promotes an increase in the node centrality of some nodes， and there is a significant core-periphery structure in the economic connection network of the Arctic Route Economic Circle. The opening of the Arctic Route also promotes the increase in the density of the economic connection network of the Arctic Route Economic Circle， and the connections among countries have gradually become more closer. After the opening of the Arctic Route， most Western European countries have high level of accessibility， and the level of accessibility of Northeast Asian countries have increased significantly， while the accessibility level of Northeast Asian countries are still low.