Presence, distribution and risk assessment of polycyclic aromatic hydrocarbons in rice-wheat continuous cropping soils close to five industrial parks of Suzhou, China

Li, Yong; Long, Ling; Ge, Jing; Yang, Li-xuan; Cheng, Jin-jin; Sun, Lingxiang; Lu, Chang; Yu, Xiangyang

doi:10.1016/j.chemosphere.2017.06.055

Cited by 32 publications

(5 citation statements)

References 46 publications

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“…In addition, traffic flows, road conditions, and the surrounding environments can also affect soil PAH concentrations. The concentrations of Σ16PAHs in this study are similar to those for the rice–wheat continuous cropping soils that are located close to industrial parks in Suzhou, with a value ranging from 125.990 μg/kg to 796.650 μg/kg [ 42 ]. Compared with other areas, the farmland soils of Guangzhou were weakly contaminated.…”

Section: Resultssupporting

confidence: 60%

Environmental Risk Assessment of Polycyclic Aromatic Hydrocarbons in Farmland Soils near Highways: A Case Study of Guangzhou, China

Zhang

et al. 2022

IJERPH

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Recently, the rapid growth in vehicle activity in rapidly urbanized areas has led to the discharge of large amounts of polycyclic aromatic hydrocarbons (PAHs) into roadside soils and these compounds have gradually accumulated in the soil, which poses a serious threat to national food security and public health. However, previous studies did not clearly investigate the seasonal differences in PAH pollution of roadside soil by different highways. Therefore, based on field investigations, this study collected 84 soil surface samples to compare the pollution characteristics of 16 PAHs in farmland soils located near different roads in different seasons in Guangzhou, China. The results showed that the concentration of Σ16PAHs in farmland soils in spring (with a mean value of 258.604 μg/kg) was much higher than that in autumn (with a mean value of 157.531 μg/kg). There are differences in the PAH compositions in spring (4 ring > 3 ring > 5 ring > 6 ring) and autumn (4 ring > 5 ring > 6 ring > 3 ring). The proportion of 4–6 ring PAHs was much higher than 2–3 ring PAHs in both seasons. The spatial differences were significant. The sampling areas with higher concentrations of 16 PAHs were Tanbu Town, Huadu District (TB), Shitan Town, Zengcheng District (ST), and Huashan Town, Huadu District (HS), while the lowest concentration was in Lanhe Town, Nansha District (LH). The results of the diagnostic ratios showed that the main source of soil PAHs consists of a mixed source from petroleum and biomass combustion. The results from the total pollution assessment method and Nemerow index method indicated that the pollution levels of PAHs in the farmland soils indicated weak contamination. Our study provides a scientific basis for the prevention and control of soil pollution in farmlands near highways.

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Section: Resultssupporting

confidence: 60%

Environmental Risk Assessment of Polycyclic Aromatic Hydrocarbons in Farmland Soils near Highways: A Case Study of Guangzhou, China

Zhang

et al. 2022

IJERPH

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“…Studies have demonstrated that the continuous cropping obstacle may be due to many factors, including soil pathogens, phytotoxic substances in root exudates, root knot nematodes, and decreases of soil nutrients [11,29]. Currently, more and more studies are focusing on detecting the roles of soil microbial communities in long-term mono-cropping practices, including black pepper, potato, and sanchi ginseng cropping systems [30][31][32][33].…”

Section: Discussionmentioning

confidence: 99%

Effects of Continuous Sugar Beet Cropping on Rhizospheric Microbial Communities

Huang¹,

Sun²,

Fu³

et al. 2019

Genes

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The continuous cropping of sugar beet can result in soil degradation and a decrease in the sugar beet yield and quality. However, the role of continuous sugar beet (Beta vulgaris L. var. saccharifera) cropping in shaping the structure and function of the rhizosphere microbial community remains poorly investigated. In this study, we comparatively investigated the impact of different numbers of years of continuous sugar beet cropping on structural and functional changes in the microbial community of the rhizosphere using high-throughput sequencing and bioinformatics analysis. We collected rhizosphere soils from fields continuously cropped for one-year (T1), five-year (T5), and thirty-year (T30) periods, as well as one bulk soil (T0), in the Xinjiang Uygur Autonomous Region. The results demonstrated that continuous sugar beet cropping resulted in a significant decline in the community diversity of soil bacterial and fungal populations from T1 to T5. With continuous change in the structure of the microbial community, the Shannon diversity and observed species were increased in T30. With an abundance of pathogenic microbes, including Acidobacteria, Alternaria, and Fusarium, that were highly enriched in T30, soil-borne diseases could be accelerated, deduced by functional predictions based on 16S rRNA genes. Continuous sugar beet cropping also led to significant declines in beneficial bacteria, including Actinobacteria, Pseudomonas spp., and Bacillus spp. In addition, we profiled and analyzed predictive metabolic characteristics (metabolism and detoxification). The abundance of phenolic acid decarboxylase involved in the phenolic acid degradation pathway was significantly lower in groups T5 and T30 than that in T0 and T1, which could result in the phenolic compounds becoming excessive in long-term continuous cropping soil. Our results provide a deeper understanding of the rhizosphere soil microbial community's response to continuous sugar beet cropping, which is important in evaluating the sustainability of this agricultural practice.

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“…S53 is located in densely populated residential areas. In general, high concentrations are often found in/around industrial areas (Li et al, 2017).…”

Section: Analysis Of the Spatial Distribution Of Pahsmentioning

confidence: 99%

Distribution Characteristics, Source Analysis and Risk Assessment of Polycyclic Aromatic Hydrocarbons in Sediments of Kuye River: A River in a Typical Energy and Chemical Industry Zone

Liu

Zhang

Yang

et al. 2023

Preprint

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Presence, distribution and risk assessment of polycyclic aromatic hydrocarbons in rice-wheat continuous cropping soils close to five industrial parks of Suzhou, China

Cited by 32 publications

References 46 publications

Environmental Risk Assessment of Polycyclic Aromatic Hydrocarbons in Farmland Soils near Highways: A Case Study of Guangzhou, China

Environmental Risk Assessment of Polycyclic Aromatic Hydrocarbons in Farmland Soils near Highways: A Case Study of Guangzhou, China

Effects of Continuous Sugar Beet Cropping on Rhizospheric Microbial Communities

Distribution Characteristics, Source Analysis and Risk Assessment of Polycyclic Aromatic Hydrocarbons in Sediments of Kuye River: A River in a Typical Energy and Chemical Industry Zone

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