Poverty alleviation projects in many places have adopted the form of immigration. Why can't it be solved by increasing investment and introducing manpower?

The problem you are talking about is actually related to "ecological migration".

It should be said that this practice shows that human beings are smarter. Immigration is not a compromise for human beings to transform nature. On the contrary, it is a wise move made on the basis of more fully understanding, understanding, adapting to and living in harmony with nature!

Research shows that human intelligence cannot be compared with nature, or that human beings will never "fight" with nature. There are countless lessons in this regard.

Therefore, it is undoubtedly the most powerful and lowest-cost vegetation restoration method for human beings to give nature a chance to develop itself according to its own succession law, and then gradually form a stable ecological community.