The Changjiang Plain evergreen forests ecoregion (WWF ID: PA0415) covers the plain of the Yangtze River (Changjiang) from where it leaves the mountains at the Three Gorges in the west, to the mouth of the Yangtze at the East China Sea.

This plain is one of the most densely populated areas on Earth, and most of the original oak and conifer forests have long been converted to agriculture.

Extensive wetlands, however, provide habitat for migratory waterfowl and for diverse aquatic species.

[3][4] The plain was once home to extensive evergreen oak (Cyclobalanopsis) or chinquapin (Castanopsis) forests, but the flat areas have mostly been converted to rice paddies.

Seasonal flooding of the river and surrounding wetlands provide habitat for waterfowl and aquatic life.