在世界上许多地区,由于不同类型的环境问题造成人们被迫离开家园。最近的研究表明,这类难民的数目至少有1000万,但也可能是2500万之多。尽管当今难民的数量之多令人不安,仍不能排除在今后几十年中被迫的人口迁移,即环境性移民的数目还要急剧增长的可能性。有些研究一直在关注这类问题:将来大规模环境性移民的数量大小,何时、 In many parts of the world, people are forced to leave their homes due to different types of environmental problems. Recent research shows that there are at least 10 million such refugees, but it could be as much as 25 million. Despite the disturbing number of today’s refugees, the forced displacement of populations in the coming decades, that is, the prospect of a dramatic increase in the number of environmental migrants, can not be ruled out. Some studies have been focusing on such issues as the size, size and timing of large-scale environmental immigrants in the future,