Eco-environmental problems and protectionin Tumen River development

The eco-environmental problems and protection in Tumen River development were studied. Thebackground of the catchment which is at the juncture of China, Korea and Russia was described. The eco-en-vironmental characteristics and rnajor problems, and regional eco environment impact and tendency were ana-lyzed. Eco-environment of Tumen River catchrnent was divided into four function and protection zones.