Distribution Characteristics and Pollution Assessment of Soil Heavy Metals under Different Land-Use Types in Xuzhou City, China
作者： Aman Fang , Jihong Dong , Yingli An
DOI: 10.3390/SU11071832
关键词: Topsoil 、 Total organic carbon 、 Xuzhou 、 Pollution 、 Grassland 、 Land use 、 Soil heavy metals 、 Environmental chemistry 、 Environmental science 、 Soil water
摘要: Xuzhou, as a mining city in China, has been experiencing 130 years of coal and processing. To explore the spatial distribution characteristics pollution status soil heavy metals (Cr, Cd, As, Hg, Zn, Pb) under different land-use types, total 2697 topsoil samples were collected all areas (except for water) Xuzhou 2016. Overall, mean concentrations Cr (70.266 mg/kg), Cd (0.141 As (10.375 Hg (0.036 Zn (64.788 Pb (24.84 mg/kg) soils lower than environmental quality standard (GB15618-1995). However, Cr, exceeded their corresponding background values, with concentration being almost three times its value. For highest was concentrated grassland soils. The area higher those other built-up Based on potential ecological risk assessment, forestland, garden land, grassland, others at low moderate levels, farmland low, moderate, high various levels Xuzhou. There significant positive correlation between Pb, organic carbon contents farmland, area, ( p < 0.01 ). A degree found concentrations, well soils, values 0.05 , respectively. An obvious could be seen
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