TY - JOUR
T1 - Spatial-temporal variation, ecological risk, and source identification of nutrients and heavy metals in sediments in the peri-urban riverine system
AU - Li, Xuantian
AU - Wu, Puxia
AU - Delang, Claudio O.
AU - He, Qilin
AU - Zhang, Fengbao
N1 - This study was supported by the Shaanxi Provincial Water Conservancy Technology Project (2013slkj-11).
Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
PY - 2021/7/27
Y1 - 2021/7/27
N2 - A great deal of attention has been directed to the toxicity, enrichment, and accumulation of urban river sediment pollution. To understand the spatial-temporal variation, ecological risk and source of nutrients, and heavy metals in sediments from the Weihe River, the concentrations of total nitrogen (TN), total phosphorus (TP), organic matter (OM), and 10 heavy metals (Cd, Sb, As, Co, Cu, Pb, Ni, Cr, Zn, and Mn) in sediments at 14 sampling sites along the river were investigated. The results showed that nutrients and heavy metals had an interannual decreasing trend, and that the high-value regions were concentrated in urban locations within the study area. Ecological risk assessment results showed that TN was between the security level (no toxic effect) and the lowest level (tolerable for organisms), TP was at the lowest level, and OM was within the security level, all mainly from external sources. The geoaccumulation index (Igeo) and enrichment factor (EF) of 10 heavy metals were all within the unpolluted level, while the pollution load index (PLI) of 12 sampling sites had reached the moderate pollution level. The results of Pearson correlation, principal component analysis, and cluster analysis showed that heavy metals originated mainly from industrial and domestic sources, geochemical environments, and agricultural activities, indicating that heavy metals in the Weihe River sediments were influenced significantly by anthropogenic activities. The results are expected to provide a scientific basis for the development and utilization of the Weihe River water resources. Graphical abstract: [Figure not available: see fulltext.].
AB - A great deal of attention has been directed to the toxicity, enrichment, and accumulation of urban river sediment pollution. To understand the spatial-temporal variation, ecological risk and source of nutrients, and heavy metals in sediments from the Weihe River, the concentrations of total nitrogen (TN), total phosphorus (TP), organic matter (OM), and 10 heavy metals (Cd, Sb, As, Co, Cu, Pb, Ni, Cr, Zn, and Mn) in sediments at 14 sampling sites along the river were investigated. The results showed that nutrients and heavy metals had an interannual decreasing trend, and that the high-value regions were concentrated in urban locations within the study area. Ecological risk assessment results showed that TN was between the security level (no toxic effect) and the lowest level (tolerable for organisms), TP was at the lowest level, and OM was within the security level, all mainly from external sources. The geoaccumulation index (Igeo) and enrichment factor (EF) of 10 heavy metals were all within the unpolluted level, while the pollution load index (PLI) of 12 sampling sites had reached the moderate pollution level. The results of Pearson correlation, principal component analysis, and cluster analysis showed that heavy metals originated mainly from industrial and domestic sources, geochemical environments, and agricultural activities, indicating that heavy metals in the Weihe River sediments were influenced significantly by anthropogenic activities. The results are expected to provide a scientific basis for the development and utilization of the Weihe River water resources. Graphical abstract: [Figure not available: see fulltext.].
KW - Ecological risk
KW - Heavy metals
KW - Nutrients
KW - Sediments
KW - Source identification
UR - http://www.scopus.com/inward/record.url?scp=85111444389&partnerID=8YFLogxK
U2 - 10.1007/s11356-021-15601-y
DO - 10.1007/s11356-021-15601-y
M3 - Journal article
C2 - 34318410
AN - SCOPUS:85111444389
SN - 0944-1344
VL - 28
SP - 64739
EP - 64756
JO - Environmental Science and Pollution Research
JF - Environmental Science and Pollution Research
ER -