衡量一个地区的投资环境，投资回报率是最根本、最关键的因素。西部较之东部，劳动力、土地等生产要素价格明显偏低，理应有利于获得较高的投资回报。同时，随着东部地区劳动力和土地价格的提高，西部丰富及廉价的劳动力、土地、矿产等资源的比较优势将凸现出来，也应吸引更多? To measure the investment environment in a region, the rate of return on investment is the most fundamental and crucial factor. Compared with the eastern part of the west, the prices of production factors such as labor and land are obviously lower in the west, which should be conducive to obtaining a higher return on investment. At the same time, with the increase of labor force and land prices in the eastern region, the comparative advantages of rich and cheap labor, land and mineral resources in the western region will be highlighted and attracted more?