ORIGINAL RESEARCH
Contamination of Trace Elements in River
Ecosystem and Source Apportionment Based
on Their Relationship with Landscape
Patterns
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1
College of Marine Science and Engineering, Nanjing Normal University, Nanjing 210023, P. R. China
2
State Key Laboratory of Estuarine and Coastal Research (East China Normal University) Shanghai 200241, P.R. China
3
Key Laboratory of Poyang Lake Wetland & Watershed Research, Ministry of Education
(Jiangxi Normal University) Nanchang 330022, P.R. China
Submission date: 2020-08-20
Final revision date: 2020-11-11
Acceptance date: 2020-11-16
Online publication date: 2021-05-12
Publication date: 2021-06-09
Corresponding author
Ye Chen
College of Marine Science & Engineering, Nanjing Normal University, No. 2 Xuelin Rd, Qixia District, 210023, Nanjing, China
Pol. J. Environ. Stud. 2021;30(4):3327-3339
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ABSTRACT
Complex configuration of landscape types on different spatial scales and different slopes, such as
entire basin and buffer zones, is a significant issue that affects contamination of trace elements in river
ecosystem. Water and sediment samples were collected and analyzed to determine the concentration
and spatial distribution of trace elements throughout various topographies and landscape types. The
result demonstrated that landscape percentages (agricultural land, forest land, grassland, and built-up)
would greatly affect concentration of trace elements in river, agricultural land and built-up percentage
demonstrate significant positive correlation with concentration of trace elements. While forest land
percentage appeared significant negative correlation with concentration of trace elements, but significant
positive correlation areas are located on lower steepness slope and buffer zones with elevations of 0-500
m. As average slope steepness increases, more significant positive correlation exists between built-up
percentage and trace elements concentration in river. Mining activities are a major potential source
because the landscape types of mining land area in the upstream of the river are built-up on high
steepness slope, and the relationships of built-up percentage in entire sub-basin with concentration of
trace elements are more significant than that in river buffer zones.