Evaluation of tourism impact on soil metal accumulation through single and integrated indices

Memoli, Valeria; Esposito, Francesco; Panico, Speranza Claudia; Marco, Anna De; Barile, Rossella; Maisto, Giulia

doi:10.1016/j.scitotenv.2019.05.211

Cited by 43 publications

(17 citation statements)

References 36 publications

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“…Despite of nutrients, metals showed similar temporal trends with the highest values in winter and the lowest in summer, suggesting that their mobility is more affected by microclimatic conditions rather than plants and uptake [32]. In addition, the pollution effect that is marked in winter when the anthropic activity is greater cannot be excluded [46].…”

Section: Discussionmentioning

confidence: 94%

Role of Seasonality and Fire in Regulating the Enzymatic Activities in Soils Covered by Different Vegetation in a Mediterranean Area

et al. 2021

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As they quickly respond to environmental conditions, soil enzymes, involved in nutrient cycles, are considered good indicators of soil quality. The Mediterranean area is a peculiar environment for climatic conditions and for fire frequency. Therefore, the research aimed to evaluate the role of seasonality and fire on enzymatic activities (i.e., hydrolase, dehydrogenase, and β-glucosidase) in soils covered by herbs, black locust, pine, and holm oak. In addition, the main soil abiotic properties that drive the enzymatic activities were also investigated. In order to achieve the aims, surface soils were collected in unburnt and burnt areas and characterized for water and organic matter contents, pH, concentrations of C and N, and available fractions of Al, Ca, Cu, Fe, Mg, Mn, Na, and Pb. The results highlighted that the soil enzymatic activities were mainly affected by seasonality more than by fire; in unburnt soils, their main drivers were nutrient availabilities, whereas, in burnt soils they were pH, water and organic matter contents, C and N concentrations, and both nutrient and metal availabilities. Finally, holm oak, as compared with herbs, pine, and black locust, conferred higher stability to soils that were affected by seasonality and fire.

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Section: Discussionmentioning

confidence: 94%

Role of Seasonality and Fire in Regulating the Enzymatic Activities in Soils Covered by Different Vegetation in a Mediterranean Area

et al. 2021

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“…Therefore, the application of SS in the soil can lead to enhanced availability of Cu, Ni, and Zn due to the reduced pH, 8 leading to an increase of potential environmental contamination. Memoli et al 9 also confirmed that Cu and Ni could accumulate in the soil. Therefore, the presence of HMs in SS limits wide landfill application.…”

Section: Introductionmentioning

confidence: 88%

Co-Hydrothermal Carbonization of Sewage Sludge with Wood Chip: Fuel Properties and Heavy Metal Transformation Behavior of Hydrochars

Qin

et al. 2021

Energy Fuels

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To further reduce the toxicity of heavy metals (HMs) in sewage sludge (SS), organic acid (oxalic acid, citric acid, acetic acid) washing was used before co-hydrothermal carbonization (co-HTC) with pinewood. The results showed the total concentrations of six HMs (As, Cu, Ni, Cr, Mn, and Zn) in hydrochar produced at 230 °C decreased obviously during co-HTC. More importantly, F1 + F2 fractions of Ni, Cr, Mn, and Zn were also lowered. With the pretreatment of citric acid, the hydrochar from co-HTC exhibited the lowest potential ecological risk among all simples. Compared with the hydrochar produced from SS, the coalification degree, higher heating values (5.61–6.19 MJ/kg), and combustion behavior of the hydrochar derived from co-HTC were upgraded and improved. These findings offered a viable technology that could lower the bioavailability of HMs and realize the energy value of SS.

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“…On the contrary, the less is better criterion was applied to total trace metal (Cu and Pb) concentrations because their high concentration is potentially toxic for soil organisms, according to Marzaioli et al [ 30 ]. Cu and Pb were chosen as markers of contamination as documented in previous research performed inside the Vesuvius National Park [ 18 , 31 ]. Regarding the C/N threshold value, the optimal range was identified between 9 and 11, thus scores were assigned by considering the more is better criterion for the values between 9 and 11 and the less is better criterion for the values <9 and >11.…”

Section: Methodsmentioning

confidence: 99%

Combined Effects of Wildfire and Vegetation Cover Type on Volcanic Soil (Functions and Properties) in a Mediterranean Region: Comparison of Two Soil Quality Indices

Santorufo

Memoli

Panico

et al. 2021

IJERPH

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Mediterranean regions are the most impacted by fire in Europe. The effects of fire on soil greatly vary according to several factors such as vegetation cover type, but they are scarcely studied. Therefore, this research aimed at evaluating the combined impacts of fire and vegetation on single soil characteristics and on the overall soil quality and functionality through two soil quality indices, simple additive (SQI) and a weighted function (SQIFUNCT). In order to reach the aims, burnt and unburnt soils were collected under different vegetation cover types (herbs and shrubs, black locust, pine and holm oak) within the Vesuvius National Park. The soils were analyzed for the main abiotic (water and organic matter content, total C, N, Ca, K, Cu and Pb concentrations, C/N ratio) and biotic (microbial and fungal biomasses, basal respiration, β-glucosidase activity) characteristics. On the basis of the investigated soil characteristics, several soil functions (water retention, nutrient supply, contamination content, microorganism habitat and activities), and the soil quality indices were calculated. The results showed that the impact of fire on soil quality and functionality was mediated by the vegetation cover type. In fact, fire occurrence led to a decrease in water and C/N ratio under herbs, a decrease in C concentration under holm oak and a decrease in Cu and Pb concentrations under pine. Although the soil characteristics showed significant changes according to vegetation cover types and fire occurrence, both the additive and weighted function soil quality indices did not significantly vary according to both fire occurrence and the vegetation cover type. Among the different vegetation cover types, pine was the most impacted one.

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Evaluation of tourism impact on soil metal accumulation through single and integrated indices

Cited by 43 publications

References 36 publications

Role of Seasonality and Fire in Regulating the Enzymatic Activities in Soils Covered by Different Vegetation in a Mediterranean Area

Role of Seasonality and Fire in Regulating the Enzymatic Activities in Soils Covered by Different Vegetation in a Mediterranean Area

Co-Hydrothermal Carbonization of Sewage Sludge with Wood Chip: Fuel Properties and Heavy Metal Transformation Behavior of Hydrochars

Combined Effects of Wildfire and Vegetation Cover Type on Volcanic Soil (Functions and Properties) in a Mediterranean Region: Comparison of Two Soil Quality Indices

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