ORIGINAL RESEARCH
Spatial Distribution and Pollution Assessment of Potentially Toxic Elements in Urban Forest Soil of Nanjing, China
Junye Zhang 1, 2  
,  
Fei Yu 3  
,  
Shaodong Pang 1  
,  
Yuanchun Yu 1  
 
 
More details
Hide details
1
Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, P.R. China
2
Henan Polytechnic, Zhengzhou, P.R. China
3
Jiangsu Polytechnic College of Agriculture and Forestry, Jurong, P.R. China
CORRESPONDING AUTHOR
Yuanchun Yu   

Co-Innovation Center for the Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, PRChina, No.159 Longpan Road, Nanjing, Jiangsu Province, PRChina, 210037 Nanjing, China
Online publish date: 2019-03-13
Publish date: 2019-04-09
Submission date: 2018-03-12
Final revision date: 2018-06-25
Acceptance date: 2018-07-03
 
Pol. J. Environ. Stud. 2019;28(4):3015–3024
KEYWORDS
TOPICS
ABSTRACT
Our study aimed to assess the pollution levels and ecological risk of potentially toxic elements (PTEs): Pb, Cd, Cu, Cr, Zn, Ni, and As in the urban forest soil of Nanjing, China. A total of 180 topsoil (0~20cm) samples were collected with the aid of GPS according to 1 × 1 km grid cells in six different function zones: road green belt (RGB), urban square (US), urban garden (UG), institution greenland (IG), residential greenland (RG), and urban rural forest (URF). The concentrations of seven PTEs in study areas were higher than their background values (BVs), and three anthropogenic origins were identified: industrial origin, traffic origin, and agricultural origin by principle analysis (PCA), coupled cluster analysis (CA), and kriging interpolation. The potential ecological risk index (PERI) in the Nanjing urban forest soils was 305.62, in a state of significant pollution, which was mainly due to high contents of Pb, Cd, As, and Zn by correlation analysis. There were three distribution patterns for seven PTEs and PERI: Pb, Cd, As, and PERI presented similar island pattern which took traffic and commercial center as a hot spot (TCIP), while Cr and Ni presented an island pattern that took chemical plants as hotspot (CPIP), and Cu and Zn presented a scattered point pattern (SPP).
eISSN:2083-5906
ISSN:1230-1485