Comparison and Analysis on Economic Contacts of the Four Economic Corridors in the Northwestern Region:A Case Study of Lan-Xin,Bao-Lan,Western Longhai and Lan-Qing Economic Corridors
研究了西北地区沿铁路的四条经济走廊中25个城市的经济联系，通过外向能量、城市流强度和倾向度等指标分析其经济联系强度。
Railway development in China′s space economy occupies a very important position,has become a axis of the layout of our economy.Four economic corridors along railway in the northwestern region are important growing regions in northwester China and their development are very bright in the future.The economic contact of cities is very important among urban regions,which is measured to calculate the extrovert energy,the intensity of urban flow and the degree of tendency of 25 cities of four economic corridors along railway.The paper,first,introduce the main researches on the economic contact of the cities at home and abroad,including academic and empirical researches.Then,based on the analytical method of the intensity of urban flow,the paper narrates and studies the four economic corridors in northwestern region,which are Lan-Xin,Bao-Lan,Western Longhai and Lan-Qing economic corridors.What′s more,the paper analyzes the economic contact strength of these four economic corridors.