着眼优化经济结构逐步缩小东西部差距田源（一）西部发展问题不仅是个经济问题，而且是个政治问题。西部既是一个地域概念，又是一个社会经济概念。从地域概念讲，西部是指中国版图方位的广大西部地区，约占全国总面积的５８％；从社会经济概念讲，西部是我国经济欠发达地... Focusing on optimizing the economic structure and gradually narrowing the gap between the east and the west Tian Yuan 1. The development of the west is not only an economic issue but also a political issue. The western region is both a geographical concept and a socio-economic concept. From the geographical point of view, the western region refers to the vast area of ​​the western region of China’s territory, accounting for about 58% of the total area; from the social and economic concepts, the western part of China’s economically undeveloped ...