 The Bureya and Arkhara Rivers, southeast of the Selemdza, have the richest remaining forests in the oblast with Korean pine, Schisandra chinensis, Mongolian Oak, and other Manchurian flora.The Zeya–Bureya Plain, located between the Zeya, Amur, and Bureya Rivers, has the highest biodiversity in Amur Oblast.Much of this plain has been burned for agriculture, but large patches still remain.