Based on the survey on the emphasis of development and effectiveness in different stage of the ecological protection and construction project in the Sanjiangyuan area ( source of Yangtze River, Yellow River and Lancangjiang River) , this article analyzes the social condition of the ecological settlers from this area after their resettlement by applying the“marginal man” theory abroad.It points out that the main ex-pressions of the“marginal man” situation of the ecological settlers are the marginalities in terms of location , economy, status and culture.It argues that the emphasis of the second stage of the ecological protection and construction project should be placed on the issues of solving problems related to the survival and develop-ment of the ecological settlers, whereas the solving of this problem rests upon the post-resettlement indus-trial development in the areas of ecological resettlement.%基于三江源生态保护和建设工程不同阶段发展重点和成效的考察,文章运用国外“边缘人”理论分析三江源生态移民在搬迁后的“边缘人”处境,主要体现为区位上的边缘性、经济上的边缘性、身份上的边缘性和文化上的边缘性。三江源生态保护和建设二期工程的重点应放在解决生态移民的生存发展问题上,而解决这一问题则有赖于生态移民区的后续产业发展。
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