Assessment of heavy metal contamination in the sediments from the Yellow River Wetland National Nature Reserve (the Sanmenxia section), China

Cheng, Qingli; Wang, Ruiling; Huang, Wenhai; Wang, Wenlin; Xu-dong, LI

doi:10.1007/s11356-014-4041-y

Cited by 59 publications

(17 citation statements)

References 30 publications

(45 reference statements)

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“…Therefore, in general, both the core area and the buffer zone present a low level of potential ecological risk and have not yet reached a level of concern; however, the concentrations of Cd and Hg in the core area, and of Pb and Cd in the buffer zone, are higher. The low overall ecological risk alongside some higher concentrations of individual heavy metals is similar to the results reported for the Dafeng coastal wetland and the Yellow River wetland in Yancheng, Jiangsu, China [60,61].…”

Section: Resultssupporting

confidence: 84%

Spatial distribution and ecological risk assessment of heavy metals in soil from the Raoyanghe Wetland, China

Wang

Sun

et al. 2019

PLoS ONE

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Wetlands are recognized as one of the most important natural environments for humans. At the same time, heavy metal pollution has an important impact on wetlands. China's Raoyanghe Wetland is one of the most important natural wild species gene banks in China. Eight heavy metal elements (As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn) in surface layer and deep layer soils were analyzed using statistical-, pollution index-, and Nemerow index-based methods, the Hakanson potential ecological risk index method, and principal component and cluster analyses. The results showed that the maximum concentrations of heavy metals exceeded the background values in the core area and buffer zone of the wetland, but the heavy metal content of the soils was generally low and did not exceed 30%. With the exception of Hg, heavy metal concentrations showed strong spatial differentiation. The differences between the surface layer and deep layer soils of the core area were smaller than in the buffer zone. With the exception of Cd, a clear vertical zonation in the buffer zone soils was observed, showing greater evidence of external influences in this zone than the core. With the exception of partial surface soils, which indicated a safe level of pollution in the core area, all other soils were classified as having a ‘mild’ level of pollution. Thus, the wetland is moderately polluted, with both the core area and the buffer zone presenting a low level of potential ecological risk. According to the results of the present study, heavy metal contaminants in the wetland soils were found to be derived mainly from the natural sources.

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Section: Resultssupporting

confidence: 84%

Spatial distribution and ecological risk assessment of heavy metals in soil from the Raoyanghe Wetland, China

Wang

Sun

et al. 2019

PLoS ONE

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“…Hence soils of the present study area show the potential ecological risk due to Cd. Similar ecological risks were reported for the mangrove wetland in Donghai Island, Zhanjiang and the Yellow River wetland in Yancheng, Jiangsu in China[21,38]. Thus, the relatively high value of Cd indicating significantly…”

supporting

confidence: 73%

“…Studies have been conducted to evaluate the possible effect on human health due to exposure to metallic contaminants in soils from mining areas [14], industrial areas [17,18], agricultural areas [19,20] and wetlands [13,21]. The few available published studies on the pollution of wetland in Nigeria have reported elevated concentrations of metals as well as the associated high ecological and/or health risks [22,23].…”

Section: Introductionmentioning

confidence: 99%

Spatial Ecological and Health Risk Assessment of Heavy Metal Contamination in Surface Soils From Lagos Lagoon Wetlands, Nigeria

Adesuyi¹,

Njoku²,

Akinola³

et al. 2020

Preprint

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Wetlands quality and spatial distribution are being threatened by anthropogenic drivers in addition to the emerging threats of climate change. In this study, selected heavy metals (Cd, Cr, Cu, Ni, Pb and Zn) in soils from Lagos lagoon wetlands were investigated to assess spatial distribution, ecological and health risks. The data obtained were subjected to statistical analysis using GraphPad 7.0 and SPSS 22.0. Spatial distribution mapping of heavy metals was performed using ArcGIS10.0 (ESRI, Redlands, CA, USA) with Kriging interpolation. Results showed that heavy metals in the soil varied significantly (p<0.05). The contamination factors (CF) were generally low with the values for Cr, Ni, Cu, and Zn very low (<1). The CF values for some of the sampling points showed that the soils are generally moderately contaminated by Pb, Cd and Cu. The modified degree of contamination of Pb (2.35) indicates a moderate degree of contamination while that of Cd (12.60) indicates a high degree of contamination of these wetland soils. The potential ecological risk index (RI) of Pb, Cd, Cr, Ni, Cu and Zn were 70.40, 2264.40, 0.68, 1.55, 13.65, and 2.29, respectively. The RI for Pb, Cr, Ni, Cu and Zn were less than 100, hence, low, while the RI value of Cd was a very high risk (RI ≥ 400). Soils from this wetland’s areas show serious significant potential ecological risk due to Cd. Additionally, children were more susceptible to the potential health risk irrespective of the carcinogenic or non – carcinogenic risk. There were no significant carcinogenic and non – carcinogenic risks for adults and children. This wetland assessment provided important information for policymaking to reduce the potential effects of soil contamination on humans and the eco-environment.

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“…In this respect, environmental pollution caused by an increase in the world's population, agricultural fertilizer leakage, and discharge of industrial wastewater have progressively influenced riparian ecosystems. Thus, potential contamination and risk assessment of hazardous chemicals in riparian areas have attracted global debate for reactivity, toxicity, and non-biodegradable properties of these hazardous wastes (Cheng et al 2015;Liang et al 2014). Nevertheless, estimation of water resources loss and degradation of the quality of groundwater of these areas is often difficult, demanding management strategies to reverse impacts, as is the case in the wetland-aquifer system of Vitoria-Gasteiz, in which changes in land use and intensification of agriculture have contributed to the disappearance of wetlands some years ago (García-Linares et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Assessment of vulnerability and control measures to protect the Salbarua ecosystem from hypothetical spill sites

Gárfias

Llanos

Martel

et al. 2018

Environ Sci Pollut Res

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Population pressure, urbanization, and industrial developments, among other factors, have resulted in severe degradation of environmental resources such as wetlands. Thus, a groundwater model (MODFLOW) was integrated with a particle tracking MODPATH model to simulate the hydrodynamic flow head field and to analyze the vulnerability of the Salburua ecosystem and propose control measures to protect the riparian area. The simulations show that pathways of particle tracking originating at potential contaminant sources will tend to migrate downwards towards the sensitive ecosystem, which suggests that the quality of the hydrological ecosystem is likely to deteriorate in the future. Variation in exit points of particles indicates that the time-related capture areas are affected by changes of the hydraulic gradients. Two control measures of potential sources of pollutants in the vicinity of the Salbarua ecosystem were analyzed. The study results suggest that the travel time-related capture zone with a funnel-and-gate system is much smaller than without the control alternative, which indicates that the gate configuration has an effect on capture zone size and shape and on the residence time with a better attenuation performance. It is also shown that a leakage-proof barrier is less effective for point-source containment, assuming that hydraulic control performance and cost-efficiency are the criteria for pollution control effectiveness. Instead, a program of monitoring wells would effectively characterize water quality in the aquifer and provide a decision support system. This approach may be used in helping water managers to develop more physically based and quantitative protection strategies.

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Assessment of heavy metal contamination in the sediments from the Yellow River Wetland National Nature Reserve (the Sanmenxia section), China

Cited by 59 publications

References 30 publications

Spatial distribution and ecological risk assessment of heavy metals in soil from the Raoyanghe Wetland, China

Spatial distribution and ecological risk assessment of heavy metals in soil from the Raoyanghe Wetland, China

Spatial Ecological and Health Risk Assessment of Heavy Metal Contamination in Surface Soils From Lagos Lagoon Wetlands, Nigeria

Assessment of vulnerability and control measures to protect the Salbarua ecosystem from hypothetical spill sites

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