Soil microbial community changes in response to the environmental gradients of urbanization in Guangzhou City

Wang, Min; Yu, Shiqin; Chen, Xiaohua; Liu, Xiaodong; Zeng, Huixian; Wu, Wenkun; Liu, Mengyun; Su, Chenhui; Xu, Guoliang

doi:10.1007/s11252-022-01279-8

Cited by 5 publications

(3 citation statements)

References 55 publications

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“…Serving as the capital of Guangdong Province, Guangzhou holds the status of a major central city in China, as approved by the State Council. It stands as a prominent international trade and business center, coupled with its role as a pivotal transportation hub [17].…”

Section: Study Areamentioning

confidence: 99%

Characteristics and Risk Assessment of Soil Available Heavy Metal Pollution in Guangzhou Based on Multi Method Fusion

Zou,

Chen,

Zhang

et al. 2024

Preprint

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Assessment of the effective state concentrations of Zn, Pb, Cu, Ni, Cr, Cd, and As in 210 soil samples across the Guangzhou region in South China. The study also explores the pollution status, potential risks, and identifies the main hazard factors associated with these elements. The analysis of effective concentrations indicates average values of 13.66 mg/kg for Pb, 3.64 mg/kg for Ni, 17.92 mg/kg for Cu, 1.74 mg/kg for Cr, 51.77 mg/kg for Zn, 0.22 mg/kg for Cd, and 0.38 mg/kg for As. Notably, all heavy metals exhibited considerable variability. The single pollution index method and Nemerow index method both suggest that, with the exception of Cd, all heavy metals exhibit relatively low levels of contamination, indicating a slight overall pollution in the studied samples. The potential ecological risk index identifies Cd as the primary ecological risk factor among the available heavy metals in the soil of Guangzhou. The analysis using the potential health risk model suggests that the available forms of each heavy metal do not pose substantial health risks to both children and adults. The principal non-carcinogenic factors identified are Cu and Pb, whereas Cd and Cr emerge as the primary carcinogenic factors. The collaborative risk assessment analysis revealed that 79% of the samples in Guangzhou exhibited low potential risks, 20% showed potential risks, and only one sample indicated serious risks.

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Section: Study Areamentioning

confidence: 99%

Characteristics and Risk Assessment of Soil Available Heavy Metal Pollution in Guangzhou Based on Multi Method Fusion

Zou,

Chen,

Zhang

et al. 2024

Preprint

View full text Add to dashboard Cite

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“…However, other studies reported an increase in fungal species richness from rural areas to the inner city [20,21]. Still other studies found only a weak or no effect of urbanization on soil fungal diversity [22,23].…”

Section: Introductionmentioning

confidence: 98%

Changes in Soil Fungal Diversity and Composition along a Rural–Urban Gradient

Rusterholz,

Baur

2023

Forests

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The functioning of forest ecosystems depends on the taxonomic and ecological diversity of soil fungi. Urbanization is increasing worldwide and is regarded as a key driver of environmental change altering local species assemblages in urban forest. We investigated whether the degree of urbanization and local forest characteristics affect the soil fungal community in 20 beech forests located along a rural–urban gradient in the city of Basel and its suburbs (Switzerland). We analyzed their soil fungal communities by DNA metabarcoding of the rDNA ITS2 region and related these data to local forest vegetation characteristics and soil properties. The number of fungal OTUs in the 20 forests examined ranged from 170 to 303. Richness, diversity and evenness of fungal communities were all significantly affected by the degree of urbanization, but in different ways. Soil fungal richness was highest in forests in areas with a low degree of urbanization and lowest in forests in rural areas. In contrast, the fungal community diversity increased with the increasing degree of urbanization. Different fungal phyla and fungal guilds showed distinct patterns in their relative abundance along the rural–urban gradient. The degree of urbanization reduced the relative abundance of symbiotrophic fungi, but increased that of saprotrophic and pathotrophic fungi. Our results show that urbanization changes soil fungal community, which in turn can lead to alterations in forest ecosystems.

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“…However, other studies reported an increase in fungal species richness from rural areas to the inner city [22,23]. Still other studies found only a weak or no effect of urbanization on soil fungal diversity [24,25].…”

Section: Introductionmentioning

confidence: 98%

Changes in Soil Fungal Diversity and Composition along a Rural–Urban Gradient

Rusterholz,

Baur

2023

Preprint

View full text Add to dashboard Cite

The functioning of forest ecosystems depends on the taxonomic and ecological diversity of soil fungi. Urbanization is increasing worldwide and is regarded a major driver of environmental change altering local species assemblages in urban forest. We investigated whether the degree of urbanization and local forest characteristics affect the soil fungal community in 20 beech forests located along a rural–urban gradient in the city of Basel and its suburbs (Switzerland). We analyzed their soil fungal communities by DNA metabarcoding of the rDNA ITS2 region and related these data to local forest vegetation characteristics and soil properties. The number of fungal OTUs in the 20 forests examined ranged from 170 to 303. Richness, diversity and evenness of fungal OTUs were all significantly affected by the degree of urbanization, but in different ways. OTU richness was highest in forests in areas with a low degree of urbanization and lowest in forests in rural areas. In contrast, the diversity of OTUs increased with increasing degree of urbanization. Different fungal phyla and fungal guilds showed distinct patterns in their relative abundance along the rural-urban gradient. The degree of urbanization reduced the relative abundance of symbiotrophic fungi, but increased that of saprotrophic and pathotrophic fungi. Our results show that urbanization alters soil fungal community, which in turn can lead to changes in forest ecosystems.

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Soil microbial community changes in response to the environmental gradients of urbanization in Guangzhou City

Cited by 5 publications

References 55 publications

Characteristics and Risk Assessment of Soil Available Heavy Metal Pollution in Guangzhou Based on Multi Method Fusion

Characteristics and Risk Assessment of Soil Available Heavy Metal Pollution in Guangzhou Based on Multi Method Fusion

Changes in Soil Fungal Diversity and Composition along a Rural–Urban Gradient

Changes in Soil Fungal Diversity and Composition along a Rural–Urban Gradient

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