Source identification of heavy metals in peri-urban agricultural soils of southeast China: An integrated approach

Hu, Wenyou; Wang, Huifeng; Dong, Liang; Huang, Biao; Borggaard, Ole K.; Hansen, Hans Christian Bruun; He, Yue; Holm, Peter E.

doi:10.1016/j.envpol.2018.02.070

Cited by 320 publications

(99 citation statements)

References 54 publications

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“…The difference of Hg content was not obvious compare to Nanjing city and Taihang Piedmont Plain, while concentration of Hg in this study area was lowest. By contrast, concentration of As in this study area was lower than suburban farmland of Nanjing, Beijing and Xianyang city respectively, and slightly higher than suburban farmlands of Taihang Piedmont Plain [35][36][37][38][39][40].…”

Section: Plos Onementioning

confidence: 91%

Ecological risk assessment and source identification of heavy metal pollution in vegetable bases of Urumqi, China, using the positive matrix factorization (PMF) method

et al. 2020

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Heavy metal pollution is a widespread problem and strongly affects human health through the food chain. In this study, the overall pollution situation and source apportionment of heavy metals in soil (Hg, Cd, As, Pb, Ni, Zn, Cu and Cr) were evaluated using various methods including geo-accumulation index (I geo), potential ecological risk index (RI) and positive matrix factorization combined with Geographical Information System (GIS) to quantify and identify the possible sources to these heavy metals in soils. The results of I geo showed that this farmland top soil moderate contaminated by Hg, other selected elements with noncontamination level. And the average RI in the top soil was 259.89, indicating a moderate ecological risk, of which Hg and Cd attributed 88.87% of the RI. The results of the PMF model showed that the relative contributions of heavy metals due to atmospheric depositions (18.70%), sewage irrigations (21.17%), soil parent materials (19.11%), industrial and residential coal combustions (17.43%) and agricultural and lithogenic sources (23.59%), respectively. Of these elements, Pb and Cd were came from atmospheric deposition. Cr was attributed to sewage irrigations. As was mainly derived from the soil parent materials. Hg originated from industrial and residential coal combustions, and most of the Cu, Zn and Ni, except for Pb, were predominantly derived from agricultural and lithogenic sources. These results are important in considering management plans to control the aggravation of heavy metal pollution and ultimately to protect soil resources in this region. In addition, this study enhances the understanding of heavy metal contamination occurrence in agroecosystem that helps predicting and limiting the potential of heavy metal exposure to people and ecosystem.

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Section: Plos Onementioning

confidence: 91%

Ecological risk assessment and source identification of heavy metal pollution in vegetable bases of Urumqi, China, using the positive matrix factorization (PMF) method

et al. 2020

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“…The geological background values of heavy metals in soil parent material determine the concentration of heavy metals in soil to some extent. However, it was demonstrated that anthropogenic activities had a significantly greater contribution than that of natural sources for heavy metals pollution in surface soil (Hu et al 2018). A previous study showed that heavy metals pollution and its associated risks in southeast China were more severe than those in northwest China (Yang et al 2018).…”

Section: Characteristics Of CD Contamination Distributionmentioning

confidence: 99%

Ecological risk assessment of soil cadmium in China’s coastal economic development zone: a meta-analysis

Sun

Wang

et al. 2020

Ecosyst Health Sustain

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The coastal area of China has faced major strategic planning and environmental pollution, including heavy metals pollution. This study aimed to provide a comprehensive evaluation of the effects of Cd pollution on the ecology in coastal areas of China. A soil Cd pollution database of 300 counties or districts in coastal areas was screened from academic dissertations and academic journal papers. Based on the database, the ecological risk was evaluated using entropy methods and probabilistic ecological risk assessment (PERA), and the advantages and disadvantages of these methods were analyzed. In China's coastal areas, the soil Cd content in 10.33% of the counties was higher than the minimum of risk control value (1.5 mg/kg), and in 4.00% of the counties was higher than the maximum of risk control value (4.0 mg/kg). The ecological risks were highly compatible with national strategic planning areas. Guangxi Province, Zhejiang Province, and Guangdong Province ranked among the top three coastal areas for soil Cd contamination, and the ecological risks were 18.80%, 17.89%, and 15.77% at the maximum no-effect concentration/lowest effect concentration (NOEC/LOEC) level. This study can provide insights to policymakers regarding the protection of ecosystems threatened by heavy metals in the process of regional strategic planning.

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“…The potential negative health effects resulting from the use of wastewater are discussed by several authors [62,63,69,70]. Several studies analyse the chemical and microbiological contamination of wastewater used for irrigation [71][72][73][74][75][76][77][78][79]. Main studies on microbiological contamination are on total coliforms, Escherichia coli and Salmonella, which are related to fecal contamination [73,77,78,80,81].…”

Section: Wastewater Irrigation For Agriculturementioning

confidence: 99%

“…In the case of Hanoi the load with Salmonella was 260-fold the tolerable safety limit [78]. Chemical pollution is related to heavy metals from industrial effluents and fertilizers as well as soil parent materials [71,74].…”

Section: Wastewater Irrigation For Agriculturementioning

confidence: 99%

Periurban Transformations in the Global South and Their Impact on Water-Based Livelihoods

Butsch

Heinkel

2020

Water

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Urban sprawl and population increase are fundamentally transforming periurban areas in the Global South. These areas often suffer from inadequate environmental planning, resulting in water sources being overexploited, degraded, and redistributed. These processes affect water-based livelihoods due to disadvantages in water access and inadequate water governance. On the positive side, these transformation processes are leading to alternative water-based livelihoods. We systematically review and critically comment on the literature on water-based livelihoods in periurban areas of the Global South to provide the current scientific knowledge on this topic. Transformations of water-based livelihoods in periurban areas were also evaluated in terms of their sustainability. We conclude that rapid developments of periurban areas contain threats and potentials for water-based livelihoods and some emerging water-based livelihoods, whereas some emerging water-based livelihoods provide interim solutions for institutional supply gaps. Major lacunae in research are the (1) lack of holistic approaches, which address social dimensions of transformations, (2) the lack of studies applying a differentiated perspective on neighbouring areas within the urban fringe and (3) a lack of knowledge on emerging (water-based) livelihoods.

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Source identification of heavy metals in peri-urban agricultural soils of southeast China: An integrated approach

Cited by 320 publications

References 54 publications

Ecological risk assessment and source identification of heavy metal pollution in vegetable bases of Urumqi, China, using the positive matrix factorization (PMF) method

Ecological risk assessment and source identification of heavy metal pollution in vegetable bases of Urumqi, China, using the positive matrix factorization (PMF) method

Ecological risk assessment of soil cadmium in China’s coastal economic development zone: a meta-analysis

Periurban Transformations in the Global South and Their Impact on Water-Based Livelihoods

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