Soil Organic Carbon Signature under Impervious Surfaces

Wang, Yinghui; Shi, Ya-Meng; Sun, Guodong; Li, Jin-Tao; Chen, Huan; Chow, Alex T.; Yang, Zhibing; Majidzadeh, Hamed; Wang, Junjian

doi:10.1021/acsearthspacechem.0c00174

Cited by 15 publications

(12 citation statements)

References 40 publications

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“…The increases in soluble lipidlike compounds could be due to the contribution from the apoptosis of microbes and release of soluble microbial byproducts (Majidzadeh et al, 2018). In addition, the decreases in soluble carbohydrate-like components, particularly when the soil was covered by concrete, are consistent with our previous findings that the total carbohydrates in SOM were depleted and that greater depletion occurred with concrete coverage than with home structure coverage (Wang et al, 2020).…”

Section: Compositional Changes In Soil Weom From a Molecular Perspectivesupporting

confidence: 90%

“…While microbial activity was suppressed, the microbial capacities for processing various SOM components were inevitably altered. Indeed, our previous study on the same sites found considerable preservation of suberin-derived compounds in SOM with 114 years of impervious surface coverage (Wang et al, 2020). Similarly, a 20-year-long litter removal manipulation experiment showed that limited fresh litter and root inputs caused the accumulation of suberin-derived compounds (Wang et al, 2017).…”

Section: Variation In Doc Stocks Under Impervious Surface Coveragementioning

confidence: 71%

“…Soils under impervious surfaces encounter soil sealing and compaction, which will inevitably decrease organic matter mobility and seem to benefit the conservation of soil organic carbon (SOC). Nevertheless, with no plant carbon inputs, many studies have reported a 26-74% decrease in SOC content under impervious surfaces compared with soil in open areas (Yan et al, 2015;Cambou et al, 2018), and the SOM became depleted in carbohydrate components and enriched in suberin-and lignin-derived carbon (Wang et al, 2020). As soils under impervious surfaces could have elevated soil temperature and reduced soil aeration compared to soils with vegetation coverage (Scalenghe and Marsan, 2009), the soil microbial community tends to shift and drive the selective depletion of SOC (Piotrowska-Długosz and Charzyński, 2014;Hu et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Based on this setting, we previously investigated how different types and durations of impervious surface coverage impact SOM content and signatures using 13 C nuclear magnetic resonance and specific biomarker analyses. Depletion in carbohydrates and an increase in aromatics in SOM composition were found in soils under impervious surfaces, and such an alteration was greater with coverage by concrete slabs (complete sealing) than home structures built on crawl spaces (partial sealing that allows some air and moisture ventilation) and was greater as the duration of coverage by residential home structures increased (Wang et al, 2020). However, how the content and signatures of WEOM, the most active part of SOM, would vary with the type and duration of impervious surface coverage remains unknown.…”

Section: Introductionmentioning

confidence: 99%

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Depletion of Soil Water-Extractable Organic Matter With Long-Term Coverage by Impervious Surfaces

Wang

Zhang

Majidzadeh

et al. 2021

Front. Environ. Sci.

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Water-extractable organic matter (WEOM) in soil is the critical substrate that fuels microbial-driven biogeochemical cycles. However, questions remain regarding whether and how expanding impervious surface area under global urbanization may alter soil WEOM cycling. Based on absorbance and fluorescence spectroscopy and Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS), we compared the content and chemical signatures of soil WEOM under impervious surfaces with those in adjoining open areas and evaluated the impacts of types (complete sealing by concrete and partial sealing by house structures) and durations (1.5, 27, and 114 years) of impervious surface coverage. The content of soil WEOM and its chromophoric and fluorescent fractions were not significantly changed (less than 20%) after 1.5 years of coverage by concrete and house structures. However, these parameters decreased by more than 30% with 27 and 114 years of coverage by the residential home structures. The microbial-humic-like and protein-like fluorescent WEOM persisted preferentially over the terrestrial-humic-like and nonfluorescent WEOM. FT-ICR MS results suggest various degrees of depletion of biochemical groups in WEOM. While the water-extractable lipid-like compounds increased with 1.5 years of coverage, all studied biochemical groups were depleted with long-term coverage, which might reduce the microbial processing of suberin-derived compounds. This study highlights the remarkable impacts of soil sealing on reducing substrate availability for microbial carbon processing in urban environments.

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Section: Compositional Changes In Soil Weom From a Molecular Perspectivesupporting

confidence: 90%

Section: Variation In Doc Stocks Under Impervious Surface Coveragementioning

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Depletion of Soil Water-Extractable Organic Matter With Long-Term Coverage by Impervious Surfaces

Wang

Zhang

Majidzadeh

et al. 2021

Front. Environ. Sci.

Self Cite

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show abstract

“…Soil microbial community composition and diversity are associated closely with soil habitat properties. A previous study revealed that impervious surfaces induced changes in soil physicochemical properties, including temperature, pH, TC, TN, SOC, NO 3 − -N, and AP [ 36 ]. Soil pH increased, but TC, SOC, and TN were depleted under impervious surfaces, which stems from the need to remove carbon and nitrogen-rich topsoil before sealing [ 10 ].…”

Section: Discussionmentioning

confidence: 99%

Pavement Overrides the Effects of Tree Species on Soil Bacterial Communities

Cui

et al. 2021

IJERPH

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Human disturbance and vegetation are known to affect soil microorganisms. However, the interacting effects of pavement and plant species on soil bacterial communities have received far less attention. In this study, we collected soil samples from pine (Pinus tabuliformis Carr.), ash (Fraxinus chinensis), and maple (Acer truncatum Bunge) stands that grew in impervious, pervious, and no pavement blocks to investigate the way pavement, tree species, and their interaction influence soil bacterial communities by modifying soil physicochemical properties. Soil bacterial community composition and diversity were evaluated by bacterial 16S amplicon sequencing. The results demonstrated that soil bacterial community composition and diversity did differ significantly across pavements, but not with tree species. The difference in soil bacterial community composition across pavements was greater in pine stands than ash and maple stands. Soil bacterial diversity and richness indices decreased beneath impervious pavement in pine stands, and only bacterial richness indices decreased markedly in ash stands, but neither showed a significant difference across pavements in maple stands. In addition, bacterial diversity did not differ dramatically between pervious pavement and no pavement soil. Taken together, these results suggest that pavement overwhelmed the effects of tree species on soil bacterial communities, and had a greater effect on soil bacterial communities in pine stands, followed by ash and maple stands. This study highlights the importance of anthropogenic disturbance, such as pavement, which affects soil microbial communities.

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Redox-induced transformation of potentially toxic elements with organic carbon in soil

Tsang

2022

carbon res

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Soil organic carbon (SOC) is a crucial component that significantly affects the soil fertility, soil remediation, and carbon sequestration. Here, we review the redox-induced transformation of potentially toxic elements (PTEs) through the abiotic impact of SOC. The complex composition of SOC includes humus, pyrogenic carbon (e.g., biochar), dissolved organic matter, and anthropogenic carbon (e.g., compost), with varying concentrations and properties. The primary redox moieties on organic carbon are surface functionalities (e.g., phenol, quinone, and N/S-containing functional groups), environmentally persistent free radicals, and graphitic structures, and their contents are highly variable. Owing to these rich redox moieties, organic carbon can directly affect the reduction and oxidation of PTEs in the soil, such as Cr(VI) reduction and As(III) oxidation. In addition, the interactions between organic carbon and soil redox moieties (i.e., O2, Fe, and Mn minerals) cause the transformation of PTEs. The formation of reactive oxygen species, Fe(II), and Mn(III)/Mn(II) is the main contributor to the redox-induced transformation of PTEs, including Cr(VI) reduction and As(III)/Cr(III)/Tl(I) oxidation. We articulated both the positive and negative effects of organic carbon on the redox-induced transformation of PTEs, which could guide soil remediation efforts. Further scientific studies are necessary to better understand the potential transformations of PTEs by SOC, considering the complicated soil moieties, variable organic carbon composition, and both biotic and abiotic transformations of PTEs in the environment. Graphical Abstract

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Soil Organic Carbon Signature under Impervious Surfaces

Cited by 15 publications

References 40 publications

Depletion of Soil Water-Extractable Organic Matter With Long-Term Coverage by Impervious Surfaces

Depletion of Soil Water-Extractable Organic Matter With Long-Term Coverage by Impervious Surfaces

Pavement Overrides the Effects of Tree Species on Soil Bacterial Communities

Redox-induced transformation of potentially toxic elements with organic carbon in soil

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