Soil carbon stock in relation to soil properties and landscape position in a forest ecosystem of southern Italy (Calabria region)

Conforti, Massimo; Lucà, Federica; Scarciglia, Fabio; Matteucci, Giorgio; Buttafuoco, Gabriele

doi:10.1016/j.catena.2016.04.023

Cited by 78 publications

(54 citation statements)

References 58 publications

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“…That was also confirmed by the positive correlation between Ai and measured TOC, as also observed by Delgado-Baquerizo et al [80] and Rial et al [81]. Therefore, our study agrees with Conforti et al [71], who highlighted cool and wet climatic conditions as more favorable to C accumulation in Calabrian soils. Effects from climate variables were also confirmed by the relations between TOC and some bioclimatic parameters, as highlighted by Pearson coefficients and MLR analysis.…”

Section: Main Factors Affecting C Accumulationsupporting

confidence: 93%

“…However, although some authors reported that an increase of temperature can result in higher plant growth and productivity associated with a higher litter deposition, we hypothesize that in the study areas the temperature did not represent a limiting factor for plant production. The precipitation effect can be directly associated with an increase of net primary production of agroecosystems, thus increasing organic matter deposition in soil [71]. According to Deng et al [76], in our study a positive correlation among TOC and annual precipitation was retrieved.…”

Section: Main Factors Affecting C Accumulationsupporting

confidence: 67%

“…After that, as argued by Kiem et al [70], TOC dynamics are slowed down by silt and clay due to physical mechanisms of protection against oxygen diffusion and the attack of soil microorganisms, absorbing organic matter on soil structure and stabilizing it [9]. This double action mechanism has been supported by different C surveys around the world [5,68,71]. Another soil property that can play an important and significant role on C dynamics is pH; varying from each sampling areas and affecting soil reduction and oxidation processes into the soil can determine the fate of C substrate addressing to accumulation or mineralization [72] and vice versa.…”

Section: Main Factors Affecting C Accumulationmentioning

confidence: 88%

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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: Main Factors Affecting C Accumulationsupporting

confidence: 93%

Section: Main Factors Affecting C Accumulationsupporting

confidence: 67%

Section: Main Factors Affecting C Accumulationmentioning

confidence: 88%

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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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“…Due to the practical constraints, the BD samples were not available for the 100-500 cm soil layers. Considering that the BD and SOC were significant correlated (Conforti, Lucà, Scarciglia, Matteucci, & Buttafuoco, 2016;Telles et al, 2004), we established pedotransfer functions using SOC as a predictor of soil BD at 0-100 cm ( Figure S2; Benites, Machado, Fidalgo, Coelho, & Madari, 2007; Rodríguez-Lado, Rial, Taboada, & Cortizas, 2015); then, we used the SOC content in the 100-500 cm layer to estimate the soil BD for the 100-500 cm soil depth. SOC density (SOCD) was calculated using the following equations (Jobbágy & Jackson, 2000;Yang, Mohammat, Feng, Zhou, & Fang, 2007):…”

Section: Discussionmentioning

confidence: 99%

Shrub encroachment increases soil carbon and nitrogen stocks in temperate grasslands in China

Shen

Zhou

et al. 2019

Land Degrad Dev

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Shrub encroachment has significant impacts on carbon (C) and nitrogen (N) dynamics of grassland ecosystems, but, how it influences soil organic C (SOC) and soil total N (STN) stocks of grasslands is not well documented, especially in deep soils. Here, we examined these effects by investigating the SOC density (SOCD) and the STN density (STND) at depths of up to 5 m in shrub patches and grassy matrix at 18 grassland sites in Inner Mongolia, China. Our results revealed that 44.0–54.1% of SOC and 65.5–74.8% of STN were stored in soil layers of 100 cm to 500 cm, and that shrub encroachment resulted in a significant accumulation of SOC and STN in shrub patches. The mean SOCD at 0–500 cm soil layers in shrub patches and grassy matrix was 11.34 and 8.39 kg C m−2, respectively, and the mean STND was 2.45 and 2.13 kg N m−2, respectively. These differences between the shrub patches and grassy matrix were equivalent to an increase in the mean SOC and STN stocks of 2.95 kg C m−2 and 0.32 kg N m−2, respectively. Increases in SOCD and STND mainly occurred in 30–300 cm soil layers, and varied between typical grassland and desert grassland. The changes in SOCD and STND exhibited significant negative correlations with temperature and pH and positive correlations with precipitation and plant biomass. Our findings suggest that shrub encroachment can significantly accumulate SOC and STN in deep soils in temperate grasslands, which helps to understand soil C and N dynamics in shrub‐encroached grasslands.

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“…In fact, several researchers have studied the capacity of soils to store carbon in various terrestrial environments (e.g., forests, prairies, and farmland) [6][7][8] and measured their variability based on land use [9][10][11]. Soil organic carbon can vary over space and time based on numerous soil conditions and soil-forming processes, including hydroclimatic and morphological factors [12][13][14]. The organic carbon content can also vary depending …”

Section: Introductionmentioning

confidence: 99%

Distribution of Soil Organic Carbon in Riparian Forest Soils Affected by Frequent Floods (Southern Québec, Canada)

Saint-Laurent

Gervais-Beaulac

Paradis

et al. 2017

Forests

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Abstract:Measuring soil organic carbon (SOC) in riparian forest soils affected by floods is crucial for evaluating their concentration and distribution along hydrological gradients (longitudinal and transversal). Hydromorphological factors (e.g., sedimentation vs. erosion, size of floodplain, flood recurrence) may be the cause of major variations in the concentration of organic matter and SOC in soils and could have a direct impact on C levels in soil profiles. For this study, SOC concentrations were assessed in riparian soils collected along transects perpendicular to the riverbanks which cross through inundated and non-inundated zones. Other soil properties (e.g., acidity, nitrogen, texture, bulk density) that may affect the concentration of SOC were also considered. The main purpose of this study was to assess SOC concentrations in soils subjected to flooding with those outside the flood zones, and also measure various soil properties (in surface soils and at various depths ranging from 0 to 100 cm) for each selected area. Across the various areas, SOC shows marked differences in concentration and spatial distribution, with the lowest values found in mineral soils affected by successive floods (recurrence of 0-20 years). SOC at 0-20 cm in depth was significantly lower in active floodplains (Tukey HSD test), with average values of 2.29 ± 1.64% compared to non-inundated soils (3.83 ± 2.22%). The proportion of C stocks calculated in soils (inundated vs. non-inundated zones) was significantly different, with average values of 38.22 ± 10.40 and 79.75 ± 29.47 t·ha −1 , respectively. Flood frequency appears to be a key factor in understanding the low SOC concentrations in floodplain soils subjected to high flood recurrence (0-20 years).

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Soil carbon stock in relation to soil properties and landscape position in a forest ecosystem of southern Italy (Calabria region)

Cited by 78 publications

References 58 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

Shrub encroachment increases soil carbon and nitrogen stocks in temperate grasslands in China

Distribution of Soil Organic Carbon in Riparian Forest Soils Affected by Frequent Floods (Southern Québec, Canada)

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