**2. Comprehensive impact of reservoir removal**

After a period of operation, the lake ecosystem formed by reservoir storage tends to be stable. After the reservoir was scrapped and the dam was dismantled, the river was reconnected, the hydrological situation was restored to the natural state, and the lake ecology gradually returned to the river ecology. However, this is not a simple reverse process. After the balance is broken again, if scientific control measures are not taken, the natural evolution may generate new stresses on the ecological environment.

In history, some cases have made delightful improvement; some of the others have led to irreparable impacts. Avoid going astray by reviewing the past, which is significant to generalized dam removal eco-environment influence factors.
