Unlocking complex soil systems as carbon sinks: multi-pool management as the key

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: June 15, 2023

Much research focuses on increasing carbon storage in mineral-associated organic matter (MAOM), which may persist for centuries to millennia. However, MAOM-targeted management is insufficient because the formation pathways of persistent soil are diverse and vary with environmental conditions. Effective must also consider particulate (POM). In many soils, there potential enlarging POM pools, can over long time scales, be a direct precursor MAOM. We present framework context-dependent strategies that recognizes soils as complex systems conditions constrain MAOM formation.

Language: Английский

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Soil organic carbon stocks in European croplands and grasslands: How much have we lost in the past decade?

Global Change Biology, Journal Year: 2023, Volume and Issue: 30(1)

Published: Oct. 30, 2023

Abstract The EU Soil Strategy 2030 aims to increase soil organic carbon (SOC) in agricultural land enhance health and support biodiversity as well offset greenhouse gas emissions through sequestration. Therefore, the quantification of current SOC stocks spatial identification main drivers changes is paramount preparation policies aimed at enhancing resilience systems EU. In this context, (Δ SOCs) for + UK between 2009 2018 were estimated by fitting a quantile generalized additive model (qGAM) on data obtained from revisited points Land Use/Land Cover Area Frame Survey (LUCAS) performed 2009, 2015 2018. analysis partial effects derived fitted qGAM shows that use change observed LUCAS campaigns (i.e. continuous grassland [GGG] or cropland [CCC], conversion (GGC GCC) vice versa [CGG CCG]) was one changes. CCC factor contributed lowest negative Δ with an effect −0.04 ± 0.01 g C kg −1 year , while GGG highest positive 0.49 0.02 . This confirms sequestration potential converting grassland. However, it important consider local environmental conditions may either diminish grassland's storage. UK, (2018) topsoil (0–20 cm) stock below 1000 m a.s.l 9.3 Gt, −0.75% period 2009–2018. losses concentrated central‐northern countries, marginal southeast.

Language: Английский

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The challenge of selecting an appropriate soil organic carbon simulation model: A comprehensive global review and validation assessment

Global Change Biology, Journal Year: 2023, Volume and Issue: 29(20), P. 5760 - 5774

Published: Aug. 12, 2023

Abstract Promotion of soil organic carbon (SOC) sequestration as a potential solution to support climate change mitigation well more sustainable farming systems is rising steeply. As result, voluntary markets are rapidly expanding in which farmers get paid per tons dioxide sequestered. This market relies on protocols using simulation models certify that increases SOC stocks do indeed occur and generate tradable credits. puts tremendous pressure models, now expected provide the foundation for reliable global credit generation system. There exist an incredibly large number vary considerably their applicability sensitivity. confronts practitioners certificate providers with critical challenge selecting appropriate specific conditions they will be applied. Model validation context said define boundaries model, therefore model selection. To date, however, guidelines selection lacking. In this review, we present comprehensive review existing classification contexts. We found most not validated (71%), out those validated, contexts overall limited. Validation studies so far largely focus north. Therefore, countries south, least emitting already facing drastic consequences change, poorly supported. addition, general lack clear reporting, numerous flaws performance evaluation, poor coverage land use types across pedoclimatic conditions. conclude that, does represent adequate tool globally ensuring effectiveness effort crediting.

Language: Английский

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Beyond microbial carbon use efficiency

National Science Review, Journal Year: 2024, Volume and Issue: 11(4)

Published: Feb. 7, 2024

Language: Английский

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Depth dependence of soil organic carbon additional storage capacity in different soil types by the 2050 target for carbon neutrality

SOIL, Journal Year: 2025, Volume and Issue: 11(1), P. 149 - 174

Published: Feb. 5, 2025

Abstract. Land planning projects aiming to maximize soil organic carbon (SOC) stocks are increasing in number and scope, often line with the objective reach neutrality by 2050. In response, a rising of studies assesses where additional SOC could be stored over regional global spatial scales. order provide realistic values transferrable beyond scientific community, providing targets accrual should consider timescales needed them, taking into consideration effects C inputs, type, depth on dynamics. This research was conducted 320 km2 territory north-eastern France, eight contrasted types have been identified, characterized, mapped thanks high density fully described profiles. Continuous profiles were interpolated for each type land use (cropland, grassland, or forest). We defined potential using percentile boundary lines used linear model depth-dependent dynamics explore inputs necessary those within 25 years. also from literature input scenarios provided maps stocks, maximum accrual, highly heterogenous region study. Median range 78–333 tC ha−1. Maximum varies 19 ha−1 forested Leptosols 197 grassland Gleysols. The simulated years whole study one-fifth accrual. Further different is therefore storage relevant public policies approach

Language: Английский

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Towards carbon neutrality: Enhancing CO2 sequestration by plants to reduce carbon footprint

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 966, P. 178763 - 178763

Published: Feb. 1, 2025

Language: Английский

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Do rotations with cover crops increase yield and soil organic carbon?—A modeling study in southwest Germany

Agriculture Ecosystems & Environment, Journal Year: 2024, Volume and Issue: 375, P. 109167 - 109167

Published: July 29, 2024

Conservation agriculture practices of crop rotation with permanent soil cover have been widely promoted for improving long-term agroecosystem resilience in the face changing climate. However, there has no comprehensive evaluation site-specific services health and yield response to improved rotations without crops (CCs) on field spatial scales. We calibrated applied a process-based agroecosystems model determine effects cropping organic N content mineralization rate, carbon (SOC) change CO2 efflux, yields. A 10-year systems dataset from six sites southwest Germany was used calibrate evaluate DSSAT provide typical management conventional farming system region as business-as-usual (BAU) scenario application. 4-year then designed inclusion commonly grown non-legume legume CCs three cycles at research surrounding region. Crop treatments provided no-CC scenario, therefore effect CC could be tested. Relative BAU no-CC, annual resulted 12% 3% higher 6% 8% SOC respectively. Additional advantage C more pronounced by while were efficient reducing leaching. Combined positive rotational observed winter wheat oilseed rape yields sites. we variability these results regional scale, suggesting environment interactions that should considered recommendations. significantly increased water productivity cereal crops, but did not produce spring barley or silage maize compared unless only certain areas are vulnerable losses. Our findings highlight sequestration potential emphasizing need agronomically environmentally sound systems.

Language: Английский

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Factors influencing farmers' intention to participate in the voluntary carbon market: An extended theory of planned behavior

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 369, P. 122367 - 122367

Published: Sept. 3, 2024

Carbon sequestration in agricultural soils is essential for sustainable agriculture, contributing to the achievement of Sustainable Development Goals and combating climate change. The Voluntary Market (VCM), designed encourage farmers implement practices, a recent innovation Europe, contrast well-established American system. Consequently, there limited understanding farmers' intentions participate. study analyzes willingness participate VCM influencing factors through Extended Theory Planned Behavior (ETPB). For this purpose, data were collected from 241 Italian located Sicily region partial least squares structural equation model (PLS-SEM) was applied. results show that Attitude, Perceived Behavioral Control Knowledge have statistically significant influence on intention VCM. In contrast, Subjective Norms Environmental Risk do not influence. Our findings suggest strongly influenced by confidence their capabilities knowledge topic. This should guide policymakers practitioners offer extension services technical assistance, helping understand potential Indeed, major barrier participation initiative.

Language: Английский

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Integrating multi-year crop inventories as a proxy for soil management within a digital soil mapping framework for predicting nitrogen indices

Geoderma, Journal Year: 2024, Volume and Issue: 448, P. 116944 - 116944

Published: June 25, 2024

For the international digital soil mapping (DSM) community, adequate spatial estimates of nitrogen (N) mineralization have yet to be generated. This is due, in part, an inability capture critical N controls at regional and provincial scales. While influence climate, vegetation, relief are accessible predictors DSM, effect management known for its important on dynamics, but has hitherto been elusive mappers. purpose producing maps inform fertilizer management, intention this study was determine importance novel crop frequency layers, as a proxy through development scale DSMs total (TN), biological availability (BNA) estimate over growing season (GSN) calculated from TN BNA results. Crop covariates were developed that estimated particular type planted 10-year period, thus capturing cropping system tillage intensity. results 27% higher using layers support vector machine learner, with Lin's concordance correlation coefficient (concordance) 0.45. predictions increased by 24% stochastic gradient boosting learner final GSN showed least improvement (6%) resulted highest (0.47) learner. The stable pool, represented TN, climate importance; whereas, labile based measures, best predicted controlled organism covariates. successful inclusion into indicated number times forages potatoes period greatest importance. As intensity most pronounced potatoes, contribute biomass building organic matter levels, increasing years had positive pools.

Language: Английский

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Energy stored in soil organic matter is influenced by litter quality and the degree of transformation – A combustion calorimetry study

Geoderma, Journal Year: 2024, Volume and Issue: 443, P. 116846 - 116846

Published: March 1, 2024

The turnover and stabilization of organic matter (OM) in soils depend on mass energy fluxes. Understanding the content soil (SOM) is therefore crucial importance, but this has hardly been studied so far, especially mineral soils. In study, combustion calorimetry (bomb calorimetry) was applied to determine (combustion enthalpy, ΔCH) various materials: litter inputs, forest floor layers (OL, OF, OH), bulk particulate (POM) from topsoils (0–5 cm). Samples were taken 35-year-old monocultural stands Douglas fir (Pseudotsuga menziesii), black pine (Pinus nigra), European beech (Fagus sylvatica), red oak (Quercus rubra) grown under highly similar soil, landscape boundary conditions. This allowed investigate influence degree transformation quality ΔCH SOM. Tree species fuel C cycle with high-energy (38.9 ± 1.1 kJ g−1C) fine root biomass (35.9 g−1C). As plant material transformed SOM, decreases order: OL (36.8 1.6 ≥ OF 3.7 > OH (30.6 7.0 0–5 cm (22.9 8.2 It indicates that OM stabilization, as microorganisms extract compounds for growth maintenance, resulting lower-energy POM fraction 1.6-fold higher compared significantly affect SOM lowest values (12.7 3.4 contents corresponded stoichiometric isotopic parameters proxies transformation. conclusion, quality, terms elemental composition content, defines pathway energy-driven microbially mediated

Language: Английский

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