出典:Wiktionary
From the Mandarin pronunciation of Chinese 楊浦/杨浦 (Yángpǔ, literally “Poplar Bank”), a 1950 clipping of earlier 楊樹浦 (Yángshùpǔ, literally “Poplar Tree Bank”), after the name of a creek that formerly ran through the area beside present-day Lanzhou Rd.
Yangpu