大国地缘战略交汇区的时空演变：特征、规律及其原因

Since the end of the 20^th century, the world has considerably changed considerably. Great countries are formulating and constantly adjusting their country's geostrategic strategies in response, promoting the formation of a classic and modern geostrategic strategy. However, research regarding the spatial-temporal evolution of geostrategic intersections is limited. Therefore, it is of great theoretical and practical significance to explore the characteristics and laws of the spatial-temporal evolution of geostrategic intersections and analyze their origins. Using text analysis and spatial visualization methods, seven major world powers are selected according to comprehensive and industrial indicators. Their geostrategic strategies during different periods since 1900 are analyzed. The results show that the spatial and temporal evolution of the geostrategic intersections of large countries shows three distinct characteristics: the spatial and temporal evolution of the geostrategic intersections of the great countries is characterized by the spatial characteristics of the Eurasian continent, concentrated in marginal crescent-shaped regions, and spatially distributed around areas surrounding China. At the same time, the temporal and spatial evolution of the intersections also followed three evolutionary laws, including the transformation from dispersion to concentration and the occurrence of ocean-continent intersections, partial regional stability, and a"low politicization" trend. Following an analysis of the reasons driving the evolution of intersections, it is found that national interests, resource needs, regional histories, and complex religious issues as well as changes in the international system are important reasons for the formation of geostrategic intersections. Finally, suggestions such as strengthening naval capabilities, weakening the trend of concentration in geostrategic intersections, and concentrating the power of economic competition in geostrategic intersections are proposed to provide a reference for China to address changes in the international situation.