Fig. 2

The study area. GM: Guomao Market, NS: Nasuo Town Market, NW: Nawan village, BJ: Binjiang Market, JH: Jinhai Market, DS: Dashi Town Market, TN: Tunnan village, HF: Hongfa Market, SY: Hongfa Market, ZD: Zhendong village, HZ: Huanzhu Plaza, NZ: Nanzhu Market, GG: Gongguan Town Market, SK: Gongguan Town Market