Fig. 6

Distributions of the ecological risks of the heavy metals in Xihe River. No. 1 = 0–20 cm; No.2 = 20–40 cm; No.3 = 40–60 cm; No.4 = 60–80 cm; No.5 = 80–100 cm; No.6 = 100–120 cm; No.7 = 120–140 cm; No.8 = 140–160 cm; No.9 = 160–180 cm; No.10 = 180–200 cm