Towards a global-scale soil climate mitigation strategy

Nature Communications, Journal Year: 2020, Volume and Issue: 11(1)

Published: Oct. 27, 2020

Abstract Sustainable soil carbon sequestration practices need to be rapidly scaled up and implemented contribute climate change mitigation. We highlight that the major potential for is in cropland soils, especially those with large yield gaps and/or historic organic losses. The implementation of measures requires a diverse set options, each adapted local conditions management opportunities, accounting site-specific trade-offs. propose establishment information system containing localised on group, degradation status, crop gap, associated carbon-sequestration potentials, as well provision incentives policies translate options into region- soil-specific practices.

Language: Английский

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Life cycle assessment of carbon dioxide removal technologies: a critical review

Energy & Environmental Science, Journal Year: 2021, Volume and Issue: 14(4), P. 1701 - 1721

Published: Jan. 1, 2021

This review provides a perspective on how to conduct future Life Cycle Assessment (LCA) studies of carbon dioxide removal technologies in consistent way avoiding common mistakes, which should be addressed aid informed decision making.

Language: Английский

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Life Cycle Assessment of Direct Air Carbon Capture and Storage with Low-Carbon Energy Sources

Environmental Science & Technology, Journal Year: 2021, Volume and Issue: 55(16), P. 11397 - 11411

Published: Aug. 5, 2021

Direct air carbon capture and storage (DACCS) is an emerging dioxide removal technology, which has the potential to remove large amounts of CO

Language: Английский

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Deep-C storage: Biological, chemical and physical strategies to enhance carbon stocks in agricultural subsoils

Soil Biology and Biochemistry, Journal Year: 2022, Volume and Issue: 170, P. 108697 - 108697

Published: May 17, 2022

Due to their substantial volume, subsoils contain more of the total soil carbon (C) pool than topsoils. Much this C is thousands years old, suggesting that offer considerable potential for long-term sequestration. However, knowledge subsoil behaviour and manageability remains incomplete, storage has yet be realised at a large scale, particularly in agricultural systems. A range biological (e.g. deep-rooting), chemical biochar burial) physical deep ploughing) sequestration strategies have been proposed, but are assessed. In review, we identify main factors regulate cycling critically evaluate evidence mechanistic basis designed promote greater storage, with particular emphasis on agroecosystems. We assess barriers opportunities implementation enhance 5 key current gaps scientific understanding. conclude subsoils, while highly heterogeneous, many cases suited The proposed may also bring other tangible benefits cropping systems enhanced water holding capacity nutrient use efficiency). Furthermore, reviewed potential, studies needed across diverse soils climates, conjunction chronosequence space-for-time substitutions. Also, it vital consistently included modelled estimations stocks subsoil-explicit models developed specifically reflect processes. Finally, further mapping specific regions Middle East, Eastern Europe, South Central America, Asia Africa). Conducting both immediate will fill devise appropriate policies help global fight against climate change decline quality. conclusion, our evidence-based analysis reveals an untapped terrestrial ecosystems.

Language: Английский

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Optimizing Carbon Sequestration in Croplands: A Synthesis

Agronomy, Journal Year: 2021, Volume and Issue: 11(5), P. 882 - 882

Published: April 29, 2021

Climate change and ensuring food security for an exponentially growing global human population are the greatest challenges future agriculture. Improved soil management practices crucial to tackle these problems by enhancing agro-ecosystem productivity, fertility, carbon sequestration. To meet Paris climate treaty pledges, must address validated approaches sequestration stabilization. The present synthesis assesses a range of current potential agricultural (AMP) that have effect on organic (SOC) storage Through two strategies—increasing inputs (e.g., enhanced primary production, fertilizers) reducing SOC losses erosion, managing respiration)—AMP can either sequester, up 714 ± 404 (compost) kg C ha−1 y−1, having no distinct impact (mineral fertilization), or even reduce stocks in topsoil (bare fallow). Overall, subsoil (>40 cm) requires further investigation. Moreover, change, permanent sealing, consumer behavior dietary habits waste as well socio-economic constraints farmers information exchange, long-term economic profitability) important factors implementing new AMPs. This calls life-cycle assessments those practices.

Language: Английский

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Ensuring planetary survival: the centrality of organic carbon in balancing the multifunctional nature of soils

Critical Reviews in Environmental Science and Technology, Journal Year: 2022, Volume and Issue: 52(23), P. 4308 - 4324

Published: Jan. 10, 2022

Not only do soils provide 98.7% of the calories consumed by humans, they also numerous other functions upon which planetary survivability closely depends. However, our continuously increasing focus on for biomass provision (food, fiber, and energy) through intensive agriculture is rapidly degrading diminishing their capacity to deliver vital functions. These tradeoffs in soil functionality – increased one function at expense critical are this review. We examine how land-use change has decreased ability regulate carbon pool thereby contribute profoundly climate change, cycle nutrients that sustain plant growth ecosystem health, protect biodiversity many depend, Earth's freshwater supplies. decreasing these can be halted reversed. Despite complexity interconnectedness functions, we show organic plays a central role master indicator functioning require better understanding factors controlling behavior persistence C soils. Given threats facing humanity economies, it imperative recognize Soil Security itself an existential challenge need increase multiple long-term human welfare planet.

Language: Английский

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Bare Earth’s Surface Spectra as a Proxy for Soil Resource Monitoring

Scientific Reports, Journal Year: 2020, Volume and Issue: 10(1)

Published: March 10, 2020

Abstract The Earth’s surface dynamics provide essential information for guiding environmental and agricultural policies. Uncovered unprotected surfaces experience several undesirable effects, which can affect soil ecosystem functions. We developed a technique to identify global bare areas their based on multitemporal remote sensing images aid the spatiotemporal evaluation of anthropic natural phenomena. its changes were recognized by Landsat image processing over time range 30 years using Google Earth Engine platform. Two additional products obtained with similar technique: a) frequency, represents where how many times single pixel was detected as surface, series, b) tendency, tendency increase or decrease. This enabled retrieval 32% total land area 95% when considering only areas. From perspective, found 2.8% in during period scale. However, rate exposure decreased ~4.8% same period. shows that are increasing worldwide. decreasing indicates that, unlike popular opinion, more soils have been covered due adoption conservation agriculture practices, may reduce degradation.

Language: Английский

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Responses of soil organic carbon stock to animal manure application: A new global synthesis integrating the impacts of agricultural managements and environmental conditions

Global Change Biology, Journal Year: 2021, Volume and Issue: 27(20), P. 5356 - 5367

Published: June 5, 2021

Enhancing soil organic carbon (SOC) through applying animal manure is of interest for both sustaining cereal production and mitigating greenhouse gas (GHG) emissions. Previous syntheses showed that manuring-induced SOC changes varied substantially with agricultural managements environmental conditions, while their significance relative importance to such variability are still largely uncertain. Here, we presented a new synthesis using an updated balanced database integrating the stock plausible explanatory factors in 250 observations at global 120 sites. Manure application increased by 7.41 ± 1.14 (95% confidence interval, CI) 8.96 1.83 Mg C ha-1 , respectively, compared mineral fertilized (REF-min) unfertilized (REF-zero) references. Of which approx. 72% 34% were directly contributed manure-C input, respectively. Following IPCC (Intergovernmental Panel on Climate Change) approach, these corresponded change 1.27 0.04 1.40 0.08 CI), Basing database, identified amount input as most important factor variations resultant changes. More importantly, our integrative analysis distinguished properties (e.g., pH initial content) regulating efficiency enhancing stock. These results indicate that, similar rate, could sequestrate much more alkaline soils than neutral acidic soils. By impacts findings would help develop region-specific tailor-made measures agriculture refine regional GHG inventories.

Language: Английский

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Integration of environment and nutrition in life cycle assessment of food Items: opportunities and challenges

FAO eBooks, Journal Year: 2021, Volume and Issue: unknown

Published: Dec. 23, 2021

Integration of environment and nutrition in life cycle assessment

Language: Английский

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Soil organic carbon sequestration rates in vineyard agroecosystems under different soil management practices: A meta-analysis

Journal of Cleaner Production, Journal Year: 2020, Volume and Issue: 290, P. 125736 - 125736

Published: Dec. 29, 2020

Language: Английский

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