A large lake is the most important wintering place for migratory birds  In recent years, the lake has experienced problems such as early dry water period and prolonged dry water period  Water levels are too low during dry periods, and fish are reduced, affecting wintering birds
The sluices affect the lake's natural ability to swallow rivers. Fish stocks are not replenished by rivers, and natural reproduction can be seriously affected
 Some experts suggest that the lake's river channel should be built sluices, by controlling the water level during the dry period, increase the living space of fish in the lake area, to protect winter migratory birds