Organic carbon pools and soil biological fertility are affected by land use intensity in Mediterranean ecosystems of Sardinia, Italy

Francaviglia, Rosa; Renzi, Gianluca; Ledda, Luigi; Benedetti, Antonio

doi:10.1016/j.scitotenv.2017.05.021

Cited by 64 publications

(41 citation statements)

References 57 publications

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“…Soil C stock found in our arable cropping system under rainfed conditions was higher than in irrigated systems as also observed by Mudge et al [49]. Citrus cultivation provided values (46.9 Mg C ha −1 ) similar to those by Chiti et al [37] (44.1 Mg C ha −1 ), while Mediterranean natural land cover, consisting of scrub and garrigue, showed an intermediate C stock compared to arable and woody crops (44.3 Mg C ha −1 ) with lower values than Novara et al [44] (112 Mg ha −1 ), but similar to Alberti et al [50] (47.6 Mg ha −1 ) and Francaviglia et al [42] (40.6 Mg ha −1 in the 0-25 cm soil layer) falling within the range reported by Muñoz-Rojas et al [10] for this land use. As observed by Li et al [51], natural land cover showed higher TOC concentration than cropland.…”

Section: Soil Toc C Stock and Poxc Concentrationsupporting

confidence: 86%

“…Measured TOC and C stock levels showed similar values compared to other studies performed in Mediterranean areas [4,10,[37][38][39][40][41][42]. The average TOC content in the soils of the sampled areas was 42.9 Mg C ha −1 and fell within the range of values reported for other European countries.…”

Section: Soil Toc C Stock and Poxc Concentrationsupporting

confidence: 83%

“…Indeed, citrus and vineyard, as well as arable crop, are subjected to regular and repeated soil tillage during cropping season, while olive trees in Calabria are generally managed by no till use. This confirms that tillage can be the main factor responsible for TOC gradients along the profile in agricultural soils [66,67] and could contribute to subsoil C storage [42,65], especially under Mediterranean climatic conditions where water transport is limited. Among agroecosystems, the amount of C stock per cm of depth, calculated as the ratio between the C stock divided by soil layer depth, showed higher concentration in topsoil than in subsoil, confirming that in addition to a faster mineralization, in deeper layers a more efficient immobilization process also occurs [41,62,66,68].…”

Section: Soil Toc C Stock and Poxc Concentrationsupporting

confidence: 64%

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Factors Governing Total and Permanganate Oxidizable C Pools in Agricultural Soils from Southern Italy

et al. 2020

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The present investigation was aimed to quantify the three principal components of the soil carbon (C) stock, namely inorganic, organic and permanganate oxidizable, in 0–5 cm and 5–30 cm soil layers, of the main Mediterranean agricultural land coverages: olive grove, olive forest, citrus grove, vineyard, arable irrigated, arable rainfed and natural soil covered by Mediterranean scrub and garrigue. We assessed the contribution of soil properties and climatic variables on soil TOC and POxC by Pearson’s correlations, multiple linear regressions, principal component analyses and variance partitioning. NAT and both olive cropping systems showed the highest TOC concentration while the other land covers showed values ranging between 8.0 and 26.6 g kg−1. Soil POxC represented between 0.5% and 2.2% of the total soil C. A large number of interrelated factors govern soil C accumulation in Mediterranean agroecosystems. Rainfall and temperature had a selective effect on soil C distribution between the sampling areas, while among soil properties, texture exerted a prominent effect, resulting in positive effects from clay and negative effects from sand. Soil POxC concentration showed a similar trend to soil TOC in all land uses although on each of them represent a different TOC portion.

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Section: Soil Toc C Stock and Poxc Concentrationsupporting

confidence: 86%

Section: Soil Toc C Stock and Poxc Concentrationsupporting

confidence: 83%

Section: Soil Toc C Stock and Poxc Concentrationsupporting

confidence: 64%

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Factors Governing Total and Permanganate Oxidizable C Pools in Agricultural Soils from Southern Italy

et al. 2020

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“…Therefore, a comprehensive indicator system is required to be used for soil monitoring among all types of biological indicators and biogeochemical cycles [12]. In this regard, the soil Biological Fertility Index (BFI) was introduced by Renzi et al [13] according to some biochemical parameters of soil, including SOM, microbial biomass carbon (MBC), basal respiration at the last day of incubation (BSR), cumulated respiration during the incubation period (CSR), metabolic quotient (qCO2), and mineralization quotient (qM).…”

Section: Introductionmentioning

confidence: 99%

Soil Biological Fertility and Bacterial Community Response to Land Use Intensity: A Case Study in the Mediterranean Area

et al. 2019

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The current study was performed to investigate the effects of three different long-term land use intensities on adjacent soil plots, namely a winter wheat field, a grass-covered vineyard, and a cherry farm, on soil biochemical, microbial, and molecular parameters. The results showed the maximum content of soil organic matter (SOM) and microbial biomass carbon (MBC) observed in the grass-covered vineyard. Basal respiration (BSR) and the cumulated respiration (CSR) after 25 days of incubation were significantly higher in the grass-covered vineyard and cherry farm, respectively (BSR 11.84 mg CO2–C kg−1 soil d−1, CSR 226.90 mg CO2–C kg−1 soil). Grass-covered vineyard showed the highest soil biological fertility index (BFI) score (20) and ranked in the class IV (good) of soil biological fertility. Cereal field and cherry farm had lower BFI scores and the corresponding BFI class was III (medium). In addition, the maximum ribosomal RNA copy number and the highest abundance of oligotrophic bacterial groups (25.52% Actinobacteria, 3.45% Firmicutes, and 1.38% Acidobacteria) were observed in the grass-covered vineyard. In conclusion, the grass-covered vineyard is a more conservative system and could have a large potential to improve total carbon storage in soil, mainly because of the cover crop residue management and the low soil perturbation through the no-tillage system.

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“…Mediterranean agricultural areas are characterised by low soil organic C (SOC) contents and are 33 often prone to soil degradation and SOC depletion due to change in extensive land use during the 34 last decades and they are highly vulnerable to environmental changes [1,2,3]. Continuously high 35 temperatures during the summer in the Mediterranean lead to a rapid decline in the organic matter 36 content in cultivated soil .…”

mentioning

confidence: 99%

Effects of Medium-Term Amendment with Sewage Sludge on Soil Organic Fertility and on Heavy Metal Bioavailability

Rossi¹,

Beni²

2017

Preprint

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The biomass fraction of processed municipal and industrial wastes added to soil can maintain, and in some case improve, the soil’s organic fertility. One of the main constraints in the agricultural use of the sewage sludge is its content of heavy metals. In the long term, soil administration of sewage sludge in agriculture could result in a risk of environmental impact. The aim of this research was to evaluate the effects of medium-term fertilization with sewage sludge diversely processed on the soil’s organic carbon content and humification – mineralization soil’s processes and on the physical and mechanical properties of soil. Furthermore, the heavy metals accumulation in soil, in their total and available form, has been investigated. After eight years of administration to soil, the use of sewage sludge as an agricultural soil amendment has contributed to maintaining the soil’s organic fertility. An increase in concentrations of total Ni and Zn was detected in soil. For bioavailable form (DTPA-extractable) this trend was evidenced for all heavy metals analysed. However, the concentrations of total and available heavy metals in the soil did not exceed the legal threshold established by Italian law for unpolluted soils.

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Organic carbon pools and soil biological fertility are affected by land use intensity in Mediterranean ecosystems of Sardinia, Italy

Cited by 64 publications

References 57 publications

Factors Governing Total and Permanganate Oxidizable C Pools in Agricultural Soils from Southern Italy

Factors Governing Total and Permanganate Oxidizable C Pools in Agricultural Soils from Southern Italy

Soil Biological Fertility and Bacterial Community Response to Land Use Intensity: A Case Study in the Mediterranean Area

Effects of Medium-Term Amendment with Sewage Sludge on Soil Organic Fertility and on Heavy Metal Bioavailability

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