随着经济全球化、城市化和工业化进程的加快,国家之间、地区之间、城乡之间的人口流动与迁移已经成为世界潮流;随着社会经济发展、经济建设、生态环境恢复与保护、气候变化、灾害防治、公共安全保障的需要,大规模的工程、生态、环境、灾害、扶贫移民活动已经发生并且必然将继续 With the acceleration of the process of economic globalization, urbanization and industrialization, population flow and migration among countries, regions and between urban and rural areas have become the world trend. With the social and economic development, economic construction, restoration and protection of the ecological environment, Climate change, disaster prevention and control, public safety and security needs, large-scale engineering, ecology, environment, disasters, pro-poor immigration activities have taken place and will continue