The main characteristics and heavy metal concentrations in soil and sediment samples from Xiawangang River.

aOrganic matter content (OM) (%). bBulk density (BD) (g/cm3). cPore space (PS) (%). dOrganic carbon (OC) (g kg-1). eHeavy metal concentration (µg g-1). Results are expressed as the mean ± standard deviation. fReference value (RV). gEnvironment quality standard for soils in china (National Environment Protection Agency of China, 1995). Grade I was mainly suitable for the soil of nature reserve, sources of drinking water, tea plantation, pasture, and other protected areas; Grade II was mainly applicable to the soil of general farmland, vegetable and Orchard; Grade III primarily suitable for the soil of woodland, and the soil of high background values which had high concentration of pollutants, also including the farmland near the mine.