Assessment of heavy metal pollution and health risks in urban park soil of Chengdu, China: implications for ecosystem management and public health.

Despite Chengdu's status as China's first 'park city', systematic assessment of heavy metal risks in its urban green spaces remains limited. This research investigates the concentrations and spatial distribution of heavy metals, including Mercury (Hg), Chromium (Cr), Arsenic (As), Cadmium (Cd), Lead (Pb), Copper (Cu), Nickel (Ni) and Zinc (Zn) in the surface soil of urban parks in Chengdu, China. The results indicate significant differences in metal concentrations, with higher median values for Hg, Cd, Ni, and Zn than that in suburban areas (p < 0.