1. The northern area of the delta, where major erosion events have
occurred due to the redirections of the Yellow River,
2. The area along the course of the Yellow River, where there are
many agriculture farms and rural villages,
3. The east coast of the Yellow River Delta where many aquaculture
activities, as well as fishing villages, are located, and are pro-
tected by a sea wall,
4. The area south-east of Dongying city where agricultural areas
and villages are alternated with heavy industry. A bird resort,
fishing harbor, and energy plant are also located in this area.