Assessment of Soil Heavy Metal Pollution and Its Ecological Risk for City Parks, Vicinity of a Landfill, and an Industrial Area within Guangzhou, South China

As a primary sink of pollutants, urban soil heavy metal pollution and its influence on residents ecosystems has been becoming one the most important environmental problems. In present study, four indices, Geoaccumulation index (Igeo), improved Nemerow (IMN), degree contamination (mCd), security (CSI), as well potential ecological risk (RI), were used to evaluate individual or integrated for samples collected from city parks, vicinity landfill, an industrial area within Guangzhou. The results indicated that (IMN) calculated was suitable assessment soils landfills areas. (mCd) more than IMN. Heavy metals Cd, Hg, Zn, main elements in Potential risks mainly caused by Cd Hg Soil parks moderately highly even extremely seriously polluted metals. Differing traditional cognition public, impact landfill similar better parks.