A meta‐analysis of carbon content and stocks in <scp>Technosols</scp> and identification of the main governing factors

Allory, Victor; Séré, Geoffroy; Ouvrard, Stéphanie

doi:10.1111/ejss.13141

Cited by 21 publications

(14 citation statements)

References 74 publications

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“…The impact of different urban spaces and the level of conditioning of the growing system on crop yields was assessed by one‐way analysis of variance (ANOVA), followed by a post hoc Tukey's honest significant difference (HSD) test when the results of the ANOVA suggested significance at the 95% confidence level (Allory et al., 2021; Hu et al., 2017). Variations in crop yields between vertical and horizontal farming and between hydroponic and soil‐based systems were tested using independent two‐sample t ‐tests (assuming unequal variances) at the 95% confidence level (Mathew et al., 2020).…”

Section: Methodsmentioning

confidence: 99%

How Much Food Can We Grow in Urban Areas? Food Production and Crop Yields of Urban Agriculture: A Meta‐Analysis

et al. 2022

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Urban agriculture can contribute to food security, food system resilience and sustainability at the city level. While studies have examined urban agricultural productivity, we lack systemic knowledge of how agricultural productivity of urban systems compares to conventional agriculture and how productivity varies for different urban spaces (e.g., allotments vs. rooftops vs. indoor farming) and growing systems (e.g., hydroponics vs. soil‐based agriculture). Here, we present a global meta‐analysis that seeks to quantify crop yields of urban agriculture for a broad range of crops and explore differences in yields for distinct urban spaces and growing systems. We found 200 studies reporting urban crop yields, from which 2,062 observations were extracted. Lettuces and chicories were the most studied urban grown crops. We observed high agronomic suitability of urban areas, with urban agricultural yields on par with or greater than global average conventional agricultural yields. “Cucumbers and gherkins” was the category of crops for which differences in yields between urban and conventional agriculture were the greatest (17 kg m−2 cycle−1 vs. 3.8 kg m−2 cycle−1). Some urban spaces and growing systems also had a significant effect on specific crop yields (e.g., tomato yields in hydroponic systems were significantly greater than tomato yields in soil‐based systems). This analysis provides a more robust, globally relevant evidence base on the productivity of urban agriculture that can be used in future research and practice relating to urban agriculture, especially in scaling‐up studies aiming to estimate the self‐sufficiency of cities and towns and their potential to meet local food demand.

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Section: Methodsmentioning

confidence: 99%

How Much Food Can We Grow in Urban Areas? Food Production and Crop Yields of Urban Agriculture: A Meta‐Analysis

et al. 2022

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“…It was the result of an assemblage of multiple soil materials after multiple deconstruction work and stored as a heap fulfilling no function whatsoever. Literature reports that anthropic disturbances often lead to alkaline pH, trace elements and organic contaminations and high organic carbon content (Morel et al 2005;Kuppusamy et al 2017;Allory et al 2021), which were all displayed by the contaminated soil used in this study. Originating from the introduction of various types of exogenous materials in anthropized soils these disturbances are very common in SUITMAs and brownfield soils especially (Jeannée 2001;Howard et al 2013;Joimel et al 2016;Greinert and Kostecki 2019).…”

Section: A Representative Substratementioning

confidence: 97%

Assessment for combined phytoremediation and biomass production on a moderately contaminated soil

Hostyn

Schwartz

Côme³

et al. 2022

Environ Sci Pollut Res

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Once previous industrial activity has ceased, brownfields are found in urban and suburban environments and managed in different ways ranging from being left untouched to total reconversion. These situations apply to large surface areas often impacted by residual diffuse pollution. Though significant and preventing any sensitive use, residual contamination does not necessarily require treatment. Moreover, conventional treatments show their technical and economic limits in these situations and gentle remediation options such as phytomanagement might appear more relevant to the management those sites. Thus, these sites face up two major issues: managing moderate contamination levels and providing an alternative use of economic interest. This work proposes to assess a management strategy associating the phytoremediation of organic pollution along with the production of biomass for energy generation production. A 16-week controlled growth experiment was conducted on a soil substrate moderately impacted by multiple pollution, by associating rhizodegradation with Medicago sativa or biomass production with Robinia pseudoacacia or Alnus incana in monocultures. The effect of a microbial inoculum amendment on the performances of these treatments was also evaluated. Results showed total hydrocarbons (TH), and to a lesser extent polycyclic aromatic hydrocarbons (PAH), concentrations decreased over time, whatever the plant cover. Good biomass production yields were achieved for both tree species in comparison with the control sample, even though R. pseudoacacia seemed to perform better. Furthermore, the quality of the biomass produced was in conformity with the thresholds set by the legislation concerning its use as a renewable energy source. This work is included in the scientific program of the GISFI research consortium dedicated to the knowledge and the development on remediation technologies for degraded and polluted lands (Groupement d'Intérêt Scientifique sur les Friches Industrielles -http://www.gisfi.univ-lorraine.fr).

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“…Rodionov et al 50 note that the bene cial effect of fertiliser -i.e. enhanced crop growth -was only pronounced in monoculture settings.…”

Section: Effect Of Recultivation Technologymentioning

confidence: 99%

“…[47][48][49] ). A recent meta-analysis by Allory et al 50 provides insight into the SOC dynamics of a wide range of technosols, including mine soils, but does not differentiate between different types of mining.…”

Section: Introductionmentioning

confidence: 99%

Effects of recultivation on soil organic carbon sequestration in abandoned coal mining sites: a meta-analysis

Baier

Modersohn

Jalowy

et al. 2022

Preprint

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Opencast coal mining results in high loss of soil organic carbon (SOC), which may be restored via recultivation. Common methods include liming, topsoil application, and phytoremediation. It remains unclear, however, which parameters determine the effectiveness of varying recultivation strategies especially regarding SOC sequestration. We, therefore, analysed the relationship between SOC stock changes in abandoned coal mines and the recultivation method, soil properties (pH, texture, depth), climate, and time under recultivation in 51 studies (404 data entries). All included climatic regions recorded increases in SOC stocks, with tropical soils showing the highest potential for relative gains of up to 468%. With respect to soil texture, clay content is the main factor promoting SOC sequestration. Strategy-wise, the largest positive effect was achieved by forest with liming (1.5 Mg ha− 1 a− 1), fallow after topsoil and fertiliser addition (1.1 Mg ha− 1 a− 1), agriculture after topsoil addition (1.0 Mg ha− 1 a− 1), and forest with fertiliser (1.0 Mg ha− 1 a− 1) with a response ratio of 35%, 58%, 140%, and 48%, respectively. Soil depths < 10 cm, < 20 cm, and 21–40 cm stored more SOC (0.6 Mg ha− 1 a− 1, 1.0 Mg ha− 1 a− 1, and 0.4 Mg ha− 1 a− 1; response ratio of 123%, 68%, and 73%, respectively) than soils at a depth of 41–80 cm (0.1 Mg ha− 1 a− 1; response ratio of 6%). In terms of pH, strongly acidic soils (pH < 4.5) and alkaline conditions (pH > 7) offered the most beneficial environment for SOC sequestration at 0.4 Mg ha− 1 a− 1 and 0.8 Mg ha− 1 a− 1, respectively (44% and 67% response).

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A meta‐analysis of carbon content and stocks in Technosols and identification of the main governing factors

Cited by 21 publications

References 74 publications

How Much Food Can We Grow in Urban Areas? Food Production and Crop Yields of Urban Agriculture: A Meta‐Analysis

How Much Food Can We Grow in Urban Areas? Food Production and Crop Yields of Urban Agriculture: A Meta‐Analysis

Assessment for combined phytoremediation and biomass production on a moderately contaminated soil

Effects of recultivation on soil organic carbon sequestration in abandoned coal mining sites: a meta-analysis

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