自然条件、人口流动与区域经济均衡发展

“胡焕庸线”所描述的状况正是农业社会中区域经济活动与人口的分布与自然环境、经济发展阶段相匹配的状况。在现代社会中，人们寻求最适合自己生活环境的内在追求，就表现为区域间人口与经济活动流向上的三个趋势：从农村向城市流动（城市化）；从山区向平原流动；从内陆向沿海流动（沿海化）。加大对西部的投资，仅仅是解决东、西部经济差距的一个手段，还有一个手段是消除人口流动的障碍，实现人口的自由迁徙。

Natural Conditions,Population Movement and the Balanced Development of Regional Economy

＂Hu Huanyong Line＂ precisely describes the situation that regional economic activity matches agricultural society, regional economic activity and population distribution. In modem society, people are trying to find the most suitable living environment. This results in 3 trends： from rural to urban flows; flows from the mountains to the plains is only one way to solve the economic ; from inland to costal flows. Increasing the investment in the west disparities, besides there is another way to the problem is to eliminate the barriers to the movement of population and achieve the freedom of movement of population.