The Huang He Plain mixed forests ecoregion (WWF ID: PA0424) covers the flat lower ranges of the Yellow River ("Huang He" means Yellow River).

While there is some forest habitat, the region has mostly been converted to agriculture, being one of the most populous areas in the world (approximately 190 million people).

[1][2][3] The Huang He Mixed Forests ecoregion covers the North China plain, a large alluvial plain which collects the deposits of the lower reaches of the Yellow River, the Huai River, and the Hai River.

The plain is very flat, and averages only 50 meters above sea level.

[6][7] As of 2012, only 15% of the surface area (about 65,000 km2) of the ecoregion was in its natural state; the majority of the land is devoted to agriculture.