随着我国经济的发展，南北差距逐渐缩小，而东中西部间的差距却有拉大的趋势，人们自然把注意力集中到东中西部协调发展上来，集中到开发中西部地区上来。要合理开发中西部地区，使全国经济协调发展，必须对东中西部地区在历史、地理、产业结构、投资比重等方面的差异加以分析 With the economic development in our country, the gap between the North and the South has gradually narrowed while the gap between the East, West and Central China has been widening. People naturally concentrate on the coordinated development in the eastern, central and western regions and concentrate on the development of the central and western regions. In order to rationally develop the central and western regions and make the national economy develop in a coordinated manner, we must analyze the differences in the history, geography, industrial structure and investment proportion of the eastern, central and western regions