What is ecological migration?

Ecological migration refers to the population migration in order to protect or restore the special ecology of a certain area, such as the large-scale migration in the source areas of the Three Rivers (Yangtze River, Yellow River and Lancang River). Sanjiangyuan is the largest ecological function area and water conservation area in China, which plays an ecological barrier role in the sustainable development of the middle and lower reaches and even the whole country. Because human activities have aggravated the ecological degradation in this area, local residents have been moved to other places through natural restoration.