Heavy Metal Contamination in Soils of Remnant Natural and Plantation Forests in an Urbanized Region of the Pearl River Delta, China
作者： Enqing Hou , Huimin Xiang , Jianli Li , Jiong Li , Dazhi Wen
DOI: 10.3390/F5050885
关键词:
摘要: Remnant forests in urban areas provide vital ecosystem services but are susceptible to many human activities including heavy metal emissions. In this study, we collected 192 samples of mineral soils at depths 0-3, 3-13 and 13-23 cm 16 remnant (eight natural eight plantation forests) the urbanized Pearl River Delta, China. We assessed potential risks soil Cu, Zn, Pb, Mn, Ni Cr vegetation these based on their total 0.1 M HCl extractable concentrations. The mean concentrations for all were 202.7, 102.0, 75.7, 24.3, 30.3, 7.8 mg/kg Cr, Ni, respectively. Compared background values, Zn higher both located near industrial non-industrial sites; Cu Pb sites, particularly forests. Total Mn exchangeable than
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