The Increase of Soil Organic Matter Reduces Global Warming, Myth or Reality?

Pedreño, José Navarro; Candel, María Belén Almendro; Zorpas, Antonis A.

doi:10.3390/sci3010018

Cited by 71 publications

(37 citation statements)

References 51 publications

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“…The magnitude of SOC depletion also varies among tillage practices, and relatively low depletion is reported for no-till mulch farming system and the application of organic fertilizers than compared to plow-based tillage system with lack of straw retention [19]. Moreover, a positive correlation between the depletion of the SOC pool and the emission of CO 2 has been reported [43]. The depletion of the SOC pool is reported to have a negative impact on soil quality and the balance between the elemental and nutrient.…”

Section: Major Causes and Factors For The Depletion Of Soil Organic Carbonmentioning

confidence: 99%

“…It reduces erosion losses and improves soil biological properties. In agricultural systems, increasing SOC levels helps to decrease CO 2 emissions and improves soil fertility status and crop productivity; thus, it creates a win-win circumstance [43,76]. Therefore, the conversion of conventional tillage to conservation tillage is a need of the hour in order to reduce the soil disturbance and the emissions of GHGs, including CO 2 and N 2 O.…”

Section: Conservation Agriculture and Nt For Soil Organic Carbonmentioning

confidence: 99%

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Carbon Sequestration to Avoid Soil Degradation: A Review on the Role of Conservation Tillage

Hussain

Guo

et al. 2021

Plants

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Human efforts to produce more food for increasing populations leave marks on the environment. The use of conventional agricultural practices, including intensive tillage based on the removal of crop residue, has magnified soil erosion and soil degradation. In recent years, the progressive increase in the concentration of greenhouse gases (GHGs) has created global interest in identifying different sustainable strategies in order to reduce their concentration in the atmosphere. Carbon stored in soil is 2–4 times higher than that stored in the atmosphere and four times more when compared to carbon stored in the vegetation. The process of carbon sequestration (CS) involves transferring CO2 from the atmosphere into the soil or storage of other forms of carbon to either defer or mitigate global warming and avoid dangerous climate change. The present review discusses the potential of soils in sequestering carbon and mitigating the accelerated greenhouse effects by adopting different agricultural management practices. A significant amount of soil organic carbon (SOC) could be sequestered by conversion of conventional tillage to conservation tillage. The most important aspect of conservation agriculture is thought to improve plant growth and soil health without damaging the environment. In the processes of climate change mitigation and adaptation, zero tillage has been found to be the most eco-friendly method among different tillage techniques. No-till practice is considered to enable sustainable cropping intensification to meet future agricultural demands. Although no-tillage suggests merely the absence of tillage, in reality, several components need to be applied to a conservation agriculture system to guarantee higher or equal yields and better environmental performance than conventional tillage systems.

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Section: Major Causes and Factors For The Depletion Of Soil Organic Carbonmentioning

confidence: 99%

Section: Conservation Agriculture and Nt For Soil Organic Carbonmentioning

confidence: 99%

Carbon Sequestration to Avoid Soil Degradation: A Review on the Role of Conservation Tillage

Hussain

Guo

et al. 2021

Plants

View full text Add to dashboard Cite

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“…Hence, it is not surprising that soil respiration might be up to 20% higher in a sustainable peach orchard (no tillage, cover crops, compost application and mulching of crop residues) compared to that of the paired tilled field because of the higher C inputs and SOC [43]. Increased R s due to increasing organic matter decomposition is fueling the debate on the sustainability of organic inputs [44]. Further management efforts (e.g., disposal of C inputs in deep soil layer, use of in situ catalyzed oxidative polymerization) [45,46] might be of assistance to reduce CO 2 emissions due to high C content.…”

Section: Ecosystem Dimensionmentioning

confidence: 99%

Carbon Fluxes in Sustainable Tree Crops: Field, Ecosystem and Global Dimension

et al. 2021

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Carbon (C) budget at cropping systems has not only agronomic but also environmental relevance because of their contribution to both emissions and removals of greenhouse gases (GHGs). Ideally, sustainable orchards are expected to remove atmospheric CO2 at a rate greater than that of the emissions because of (i) optimized biology of the system and (ii) reduced on-site/offsite inputs sourced by the technosphere. However, such a computation might produce inconsistent results and in turn biased communication on sustainability of the cropping systems because C accounting framework(s) are used under unclear context. This study examined the sustainability of orchards in terms of impact on GHGs focusing its significance at the field, ecosystem and global dimension analyzing some operational aspects and limitations of existing frameworks (e.g., net ecosystem carbon balance (NECB), life cycle assessment (LCA)). Global relevance of sustainable orchard was also discussed considering the C sequestration at cropland as instructed by Intergovernmental Panel on Climate Change (IPCC). The uniqueness of olive tree lifespan duration and C sequestration is discussed within the Product Environmental Footprint of agrifood product. The paper also highlighted overlapping components among the NECB, LCA and IPCC frameworks and the need for an integrated C accounting scheme for a more comprehensive and detailed mapping of sustainability in agriculture.

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“…(Minasny et al, 2017). Inputs of organic carbon for soil include crop residues, decomposed roots, and manure (Navarro-Pedreño et al, 2021). Therefore, the SOC in farmland can be increased by returning plant residues to the soil (Stella et al, 2019) or adding fertilizer, especially manure (Kadlec et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Soil Organic Carbon in Forest and Other Land Use Types at Bengkulu City, Indonesia

Wiryono¹,

Muktamar²,

Deselina³

et al. 2021

jtfm

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Conversion of natural forest into agricultural land uses has decreased soil organic carbon (SOC) and increased carbon emission into the atmosphere, but proper management of agricultural land can sequester carbon from the atmosphere and increase the SOC. This study was conducted to estimate the SOC content and storage in a forest, agroforestry land, oil palm plantation, and agricultural experimental field and to analyze the correlation between the SOC and other soil characteristics at Bengkulu City, Indonesia. Soil were sampled from the following depths: 0–10 cm, 10–20 cm, and 20–30 cm. The biomass of litter and ground cover was also sampled. This study found that the forest had the highest average SOC content from the three depths, and 0–30 cm depth SOC storage, while the agroforestry system had the lowest of both SOC content and storage. The 0–10 cm depth had the highest SOC content and storage, while the 20–30 cm depth had the lowest of both variables. The SOC was positively correlated with litter biomass, field capacity, exchangeable potassium, cation exchange capacity, and negatively correlated with bulk density and exchangeable calcium, but not correlated with total nitrogen and available phosphorus. High litter biomass input is the key to the maintenance of high SOC.

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The Increase of Soil Organic Matter Reduces Global Warming, Myth or Reality?

Cited by 71 publications

References 51 publications

Carbon Sequestration to Avoid Soil Degradation: A Review on the Role of Conservation Tillage

Carbon Sequestration to Avoid Soil Degradation: A Review on the Role of Conservation Tillage

Carbon Fluxes in Sustainable Tree Crops: Field, Ecosystem and Global Dimension

Soil Organic Carbon in Forest and Other Land Use Types at Bengkulu City, Indonesia

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