Soil respiration dynamics in forage-based and cereal-based cropping systems in central Italy

Francioni, Matteo; Lai, Roberto; D'Ottavio, P.; Trozzo, Laura; Kishimoto-Mo, Ayaka W.; Budimir, Katarina; Baldoni, Nora; Toderi, Marco

doi:10.1590/1678-992x-2018-0096

Cited by 12 publications

(17 citation statements)

References 54 publications

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“…This was confirmed by the regression analysis that highlighted the relationships between the soil respiration and the soil water content under certain thresholds (Figure 3). Similar data have been reported in other studies carried out in areas with dry summer seasons or where the main limitation is water shortage (e.g., [12,41]). In line with these studies, when water was a limiting factor here, the soil respiration increased sharply, together with the increase in the soil water content due to the rainfall events ( Figure 2).…”

Section: Relationships Between Soil Respiration Water Content and Tesupporting

confidence: 90%

“…A role for grasslands in climate change mitigation is widely recognized, and the numerous studies that have been carried out recently testify their importance at the global level [5,24,26,32,[39][40][41]. Future climate scenarios in southern Europe suggest that changes in annual temperatures, precipitation patterns, and atmospheric CO 2 concentrations might negatively alter grassland biodiversity and the associated ecosystem services, including regulating services linked to carbon cycling, especially in areas with low summer rainfall [5,41]. It is well known that the soil respiration of grasslands is largely driven by the soil temperature and the soil moisture [13,26] although the data tend to be context-dependent and related to human disturbances, such as management practices (e.g., grazing, fertilization) and changes in land use [6].…”

Section: Relationships Between Soil Respiration Water Content and Tementioning

confidence: 99%

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Soil Respiration Dynamics in Bromus erectus-Dominated Grasslands under Different Management Intensities

et al. 2019

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Reduction of soil greenhouse gas emissions is crucial to control increases in atmospheric CO2 concentrations. Permanent grasslands are of considerable importance in climate change mitigation strategies as they cover about 13% of the global agricultural area. However, uncertainties remain for the effects of management practices on soil respiration, especially over the short term. This study investigated the influence of different mowing intensities on soil respiration over the short term for Bromus erectus-dominated grasslands in the central Apennines. From 2016 to 2018, soil respiration, temperature, and moisture were measured under three different management systems: customary management, intensive use, and abandonment. Both soil water content and temperature changed over time, however mowing did not affect soil water content while occasionally altered soil temperature. The intensive use promoted higher seasonal mean soil respiration compared to the abandonment only during the 2016 growing season. Soil temperature was the main driver of soil respiration above a soil water content threshold that varied little among treatments (18.23–22.71%). Below the thresholds, soil moisture was the main driver of soil respiration. These data suggest that different mowing regimes have little influence on soil respiration over the short term in Bromus erectus-dominated grasslands. Thus, more intensive use would not have significative impacts on soil respiration, at least over the short term. Future studies need to clarify the role of root mycorrhizal and microbial respiration in the light of climate change, considering the seasonal redistribution of the rainfall.

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Section: Relationships Between Soil Respiration Water Content and Tesupporting

confidence: 90%

Section: Relationships Between Soil Respiration Water Content and Tementioning

confidence: 99%

Soil Respiration Dynamics in Bromus erectus-Dominated Grasslands under Different Management Intensities

et al. 2019

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“…The high total soil respiration rates for lentil between July and August (i.e., from 0.50 to 0.91 g CO 2 m −2 h −1 ) were probably related to the optimal and stable range of the soil temperature and SWC [29]. A large fall in the total soil respiration for the lentils was seen in September, which was attributed to the effects of crop harvesting on the root activities [13]. From October onwards, the total soil respiration remained at these low levels until December, when the CO 2 emissions were 0.01 g CO 2 m −2 h −1 .…”

Section: Soil Co 2 Dynamicsmentioning

confidence: 93%

“…Three of these were used to measure the total soil respiration, and three were isolated from roots using a polyvinyl chloride cylinder (diameter, 40 cm; height, 40 cm; open at both ends), to measure heterotrophic soil respiration following the method described by [20]. This method, known as 'trenching', has been widely applied to similar studies (e.g., [13,20,21]), with the aim of estimating the root contributions to total soil respiration by physically excluding any root access to the isolated area, regardless of root biomass. The collars were placed at about 10 m from each other in a homogenous area within each field.…”

Section: Study Areamentioning

confidence: 99%

“…Grasslands are considered to be pivotal for biodiversity conservation, and they also have a significant role in greenhouse gas emission, as they have potential to mitigate global warming [8]. For these reasons, it has become crucial to study the effects of human activities on C stored in terrestrial ecosystems [11], and particularly for soil heterotrophic respiration, which is strongly related to soil organic C decomposition [12,13]. Due to low soil temperatures, soil organic matter in mountain temperate grasslands tends to decompose at low rates [14], although management practices such as soil tillage might have relevant roles on the soil C cycling because of their influence on soil aggregate turnover, aeration, erosion, infiltration and water-holding capacity [15].…”

Section: Introductionmentioning

confidence: 99%

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Seasonal Soil Respiration Dynamics and Carbon-Stock Variations in Mountain Permanent Grasslands Compared to Arable Lands

et al. 2019

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Permanent grasslands provide a wide array of ecosystem services. Despite this, few studies have investigated grassland carbon (C) dynamics, and especially those related to the effects of land-use changes. This study aimed to determine whether the land-use change from permanent grassland to arable lands resulted in variations in the soil C stock, and whether such variations were due to increased soil respiration or to management practices. To address this, seasonal variations of soil respiration, sensitivity of soil respiration to soil temperature (Q10), and soil C stock variations generated by land-use changes were analyzed in a temperate mountain area of central Italy. The comparisons were performed for a permanent grassland and two adjacent fields, one cultivated with lentil and the other with emmer, during the 2015 crop year. Soil respiration and its heterotrophic component showed different spatial and temporal dynamics. Annual cumulative soil respiration rates were 6.05, 5.05 and 3.99 t C ha−1 year−1 for grassland, lentil and emmer, respectively. Both soil respiration and heterotrophic soil respiration were positively correlated with soil temperature at 10 cm depth. Derived Q10 values were from 2.23 to 6.05 for soil respiration, and from 1.82 to 4.06 for heterotrophic respiration. Soil C stock at over 0.2 m in depth was 93.56, 48.74 and 46.80 t C ha−1 for grassland, lentil and emmer, respectively. The land-use changes from permanent grassland to arable land lead to depletion in terms of the soil C stock due to water soil erosion. A more general evaluation appears necessary to determine the multiple effects of this land-use change at the landscape scale.

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Effects of crop residue incorporation on soil‐biodegradable mulch film degradation in a broccoli‐sorghum rotation system

Francioni,

Hoshino,

Kishimoto‐Mo

2023

Agronomy Journal

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Soil‐biodegradable mulch films are designed to be incorporated into the soil at the end of the crop cycle, to be degraded by soil microorganisms. Despite scientific community's growing interest, open field studies on these mulch films are rare, with most research conducted in laboratories. We performed an open‐field trial to evaluate the effect of combining a commercial soil‐biodegradable mulch film with incorporation of broccoli and sorghum crop residues over two cropping seasons. The mulch film was sampled after broccoli harvesting and placed inside mesh bags that were buried horizontally or vertically at different depths. Film biodegradation was assessed by direct (CO2 emissions) and indirect indicators (film mass and area loss). Three experiments were conducted to evaluate a) how incorporating crop residues affect mulch film degradation; b) temporal changes of soil microbial activity after incorporation of crop residues and mulch films; and c) possible bias in measurement of soil CO2 emissions due to horizontal mesh bag orientation. Incorporation of crop residues enhanced mulch film degradation and significantly increased soil esterase activity. However, abundances of soil fungi and bacteria in bulk soil were not enhanced by mulch film presence. Mesh bag orientation did not alter the soil CO2 efflux or affect the degradation degree of mulch films. Film in mesh bags buried at 15 cm depth showed greater degradation than that buried at 5 cm. Future in‐field studies are necessary to evaluate the effects of different crop residues incorporation and of other management practices such as different soil tillage regime.This article is protected by copyright. All rights reserved

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Soil respiration dynamics in forage-based and cereal-based cropping systems in central Italy

Cited by 12 publications

References 54 publications

Soil Respiration Dynamics in Bromus erectus-Dominated Grasslands under Different Management Intensities

Soil Respiration Dynamics in Bromus erectus-Dominated Grasslands under Different Management Intensities

Seasonal Soil Respiration Dynamics and Carbon-Stock Variations in Mountain Permanent Grasslands Compared to Arable Lands

Effects of crop residue incorporation on soil‐biodegradable mulch film degradation in a broccoli‐sorghum rotation system

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