Analyzing trophic transfer of heavy metals for food webs in the newly-formed wetlands of the Yellow River Delta, China

Cui, Baoshan; Zhang, Qi‐Jun; Zhang, Kejiang; Liu, Xinhui; Zhang, Honggang

doi:10.1016/j.envpol.2011.01.024

Cited by 205 publications

(97 citation statements)

References 56 publications

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“…There were no pronounced differences in the trace metal levels at 40-60 cm layers (P>0.05). It should be noted that Pb concentrations were higher in the three layers than the mean concentration in YRD (9.29 mg/kg) (Cui et al 2011) and lower than in the Pearl River Estuary (32.23 mg/kg) (Bai et al 2011d) and Baiyangdian Lake (30.72 mg/kg) . No apparent difference in the trace metal concentrations within each layer was observed (P>0.05), which indicates that similar trace metal levels were observed in these two wetlands.…”

Section: Resultsmentioning

confidence: 74%

“…We have little knowledge of the heavy metal concentrations in the abandoned Yellow River Delta in recent years, and it has been thought that contamination of heavy metals in the abandoned Yellow River Delta should be relatively large owing to the deterioration of the river estuary. Cui et al (2011) found that the concentrations of heavy metals in the newly formed wetlands are lower than those in other similar regions due to having fewer exposures to contamination. To our surprise, the soil heavy metal concentration in the DKHNR is lower than in other major estuarine wetlands.…”

Section: Discussionmentioning

confidence: 81%

“…The results showed that the concentrations of the heavy metals As and Cd in the marsh soils are much higher after flow-sediment regulation than before . Cui et al (2011) analyzed nine heavy metals in different media and aquatic organisms in newly formed wetlands of the YRD. Bai et al (2011b) used the contamination index and integrated contamination index to explore the wetland soils' heavy metal concentration along the tidal ditch and found that it was contaminated at a low level by As and Cd and found no contamination levels for Cr, Cu, Ni, Pb, and Zn.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Contamination assessment of arsenic and heavy metals in a typical abandoned estuary wetland—a case study of the Yellow River Delta Natural Reserve

Xie

Sun

Zhang

et al. 2014

Environ Monit Assess

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Coastal and estuarine areas are often polluted by heavy metals that result from industrial production and agricultural activities. In this study, we investigated the concentration trait and vertical pattern of trace elements, such as As, Cd, Ni, Zn, Pb, Cu, and Cr, and the relationship between those trace elements and the soil properties in coastal wetlands using 28 profiles that were surveyed across the Diaokouhe Nature Reserve (DKHNR). The goal of this study is to investigate profile distribution characteristics of heavy metals in different wetland types and their variations with the soil depth to assess heavy metal pollution using pollution indices and to identify the pollution sources using multivariate analysis and sediment quality guidelines. Principal component analysis, cluster analysis, and pollution level indices were applied to evaluate the contamination conditions due to wetland degradation. The findings indicated that the concentration of trace elements decreased with the soil depth, while Cd increases with soil depth. The As concentrations in reed swamps and Suaeda heteroptera surface layers were slightly higher than those in other land use types. All six heavy metals, i.e., Ni, Cu, As, Zn, Cr, and Pb, were strongly associated with PC1 (positive loading) and could reflect the contribution of natural geological sources of metals into the coastal sediments. PC2 is highly associated with Cd and could represent anthropogenic sources of metal pollution. Most of the heavy metals exhibited significant positive correlations with total concentrations; however, no significant correlations were observed between them and the soil salt and soil organic carbon. Soil organic carbon exhibited a positive linear relationship with Cu, Pb, and Zn in the first soil layer (0-20 cm); As, Cr, Cu, Ni, Pb, and Zn in the second layer (20-40 cm); and As, Cr, Cu, Ni, Pb, and Zn in the third layer (40-60 cm). Soil organic carbon exhibited only a negative correlation with Cd (P<0.05), in the second and third layers. As, Cr, Cu, Ni, Pb, and Zn exhibited lower geoaccumulation index values (I geo values), which averaged less than 0 in the three soil layers, this finding indicates that the soils have remained unpolluted by these heavy metals. The mean concentrations of these trace elements were lower than Class I criteria. The degradation wetland restoration suggestions have also been provided in such a way as to restore the reserved flow path of the Yellow River. The results that are associated with trace element contamination would be helpful in providing scientific directions to restore wetlands across the world.

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Section: Resultsmentioning

confidence: 74%

Section: Discussionmentioning

confidence: 81%

Section: Discussionmentioning

confidence: 99%

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Contamination assessment of arsenic and heavy metals in a typical abandoned estuary wetland—a case study of the Yellow River Delta Natural Reserve

Xie

Sun

Zhang

et al. 2014

Environ Monit Assess

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“…At the beginning of the lower reach, the Yellow River Wetland Nature Reserve of Zhengzhou, the contamination of Cr and Pb is more serious than that of Cu, Cd, and Mn, and Pb pollution is moderate at some sampling sites (Cheng et al 2012). Cui et al (2011) also report that the concentrations of Zn, Pb, Cd, Cr, and Cu are detected in sediments of the Yellow River delta.…”

Section: Introductionmentioning

confidence: 91%

“…Sediment has also been recognized as one of the important indicators of metal contamination for ecosystem quality assessment (Giusti 2001;Birch and Taylor 2002;Rate et al 2000) and has drawn wide attention in recent years (Liu et al 2009;Chen et al 2009Chen et al , 2000He et al 2009;Zhao et al 2008). Those metals can be released by various processes under favorable conditions, and aquatic organisms might be exposed to a high level of heavy metals, which may cause potential health risks to the local inhabitants through food webs (Ghregat et al 2011;Cui et al 2011).…”

Section: Introductionmentioning

confidence: 99%

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

Cheng

Wang

Huang

et al. 2015

Environ Sci Pollut Res

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The Yellow River Wetland National Nature Reserve (the Sanmenxia section) is an important area of the Yellow River for two important hydrologic gauging stations: the Sanmenxia reservoir and the Xiaolangdi reservoir. Seven sites along the section were selected: Jiziling, Dinghuwan, Houdi, Canglonghu, Shangcun, Wangguan, and Nancun. After the microwave digestion with aqua regia, concentrations of Cu, Pb, Cd, Cr, Zn, and Mn in the sediments were analyzed by flame atomic absorption spectrometry with air-acetylene flame. The results showed that all the concentrations of Cr detected were from the lithogenic source, and 63 % Mn, 48 % Pb, 41 % Cu, 20 % Cd, and 12 % Zn were from the anthropogenic source. The values of the index of geoaccumulation pointed out that there was moderate contamination of Mn at the Dinghuwan (1.04) and Houdi (1.00) sites (class 2), while the modified degree of contamination denoted that the contamination at the Houdi site (2.02) was moderate, nil to very low at the Nancun and Shangcun sites and low at the other sites, consisting with the tendency of pollution load index. For metal toxicity, the sediment pollution index indicated that the sediments of the Canglonghu site were low polluted, that of the Houdi site is nearly slightly contaminated, and those of others were natural and uncontaminated. It was vital to evaluate the degree of contamination with individual and overall elements and even with the metal toxicity. Cu, Pb, and Mn contaminations were aggravated in the Sanmenxia section, and there maybe was one of the main anthropogenic sources of these metals along the Yellow River. The findings were expected to update the current status of the heavy metal pollution in the Sanmenxia section as well as to create awareness concerning the sound condition of the whole reaches of the Yellow River.

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Heavy Metal Contamination as a Global Problem and the Need for Prevention/Reduction Measurements

Mansour

2014

Practical Food Safety

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Analyzing trophic transfer of heavy metals for food webs in the newly-formed wetlands of the Yellow River Delta, China

Cited by 205 publications

References 56 publications

Contamination assessment of arsenic and heavy metals in a typical abandoned estuary wetland—a case study of the Yellow River Delta Natural Reserve

Contamination assessment of arsenic and heavy metals in a typical abandoned estuary wetland—a case study of the Yellow River Delta Natural Reserve

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

Heavy Metal Contamination as a Global Problem and the Need for Prevention/Reduction Measurements

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