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

SOIL, Год журнала: 2025, Номер 11(1), С. 149 - 174

Опубликована: Фев. 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

Язык: Английский

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Soil mapping, digital soil mapping and soil monitoring over large areas and the dimensions of soil security – A review

Soil Security, Год журнала: 2021, Номер 5, С. 100018 - 100018

Опубликована: Окт. 13, 2021

Soil Security includes dimensions, soil capability, condition, capital, connectivity and codification (the "five C's"). This article provides a short review on how mapping, digital mapping monitoring systems (SM, DSM SMS) over large areas contribute to these five C's at scales ranging from country globe. Changes the evolution in aims of SM, SMS were driven both by main issues related policy priorities associated advances science technology. shows that can provide basis for assessing capability condition areas, especially if we assume mainly depends rather stable attributes. Repeated or are appropriated tool monitor changes scales. They may even allow capability. However, broad-scale have not yet fully achieved provision information concerning delivery some functions soil-based ecosystem services. Although significant progress estimating capital dimension security has been achieved, there is need capital. Broad-scale great potential increase connectivity. The challenge adapting our language communication target audience. There encouraging initiatives enhance codification. Codification largely political agenda, still an urgent connectivity, towards citizens, NGOs policy-makers.

Язык: Английский

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Is it possible to attain the same soil organic matter content in arable agricultural soils as under natural vegetation?

Outlook on Agriculture, Год журнала: 2022, Номер 51(1), С. 91 - 104

Опубликована: Фев. 21, 2022

Clearing natural vegetation to establish arable agriculture (cropland) almost invariably causes a loss of soil organic carbon (SOC). Is it possible restore that continues in the pre-clearance SOC level through modified management practices? To address this question we reviewed evidence from long-term experiments at Rothamsted Research, UK, Bad Lauchstädt, Germany, Sanborn Field, USA and Brazil both surveys farmers’ fields Ethiopia, Australia, Zimbabwe, UK Chile. In most cases content under cropping was range 38–67% values. Returning crop residues, adding manures or including periods pasture within rotations increased this, often 60–70% initial Under tropical climatic conditions after clearance particularly rapid, e.g. >50% less than 10 years smallholder Zimbabwe. If larger yielding crops were grown, using fertilizers, maize stover returned instead being grazed by cattle, reduced. An important exception general trend clearing Cerrado on highly weathered acidic soils conversion with soybean. Other exceptions unrealistically large annual applications manure long SOC-retentive volcanic soil. Also, introducing irrigated low rainfall region can increase beyond value due plant biomass production. For reasons sustainability health is maintain as high practically soils, but conclude vast majority situations unrealistic expect global stocks consider more reduce current rates land sustainably produce necessary food existing agricultural land.

Язык: Английский

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Spatial prediction of soil sand content at various sampling density based on geostatistical and machine learning algorithms in plain areas

CATENA, Год журнала: 2023, Номер 234, С. 107572 - 107572

Опубликована: Окт. 3, 2023

Язык: Английский

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Mapping soil organic carbon fractions for Australia, their stocks, and uncertainty

Biogeosciences, Год журнала: 2023, Номер 20(8), С. 1559 - 1586

Опубликована: Апрель 19, 2023

Abstract. Soil organic carbon (SOC) is the largest terrestrial pool. SOC composed of a continuous set compounds with different chemical compositions, origins, and susceptibilities to decomposition that are commonly separated into pools characterised by responses anthropogenic environmental disturbance. Here we map contribution three fractions total content Australia's soils. The fractions, mineral-associated (MAOC), particulate (POC), pyrogenic (PyOC), represent composition distinct turnover rates, chemistry, pathway formation. Data for MAOC, POC, PyOC were obtained near- mid-infrared spectral models calibrated measured fractions. We transformed data using an isometric-log-ratio (ilr) transformation account closed compositional nature resulting back-transformed ilr components mapped across Australia. fraction stocks 0–30 cm derived maps concentration, bulk density, coarse fragments, soil thickness. Mapping was done quantile regression forest fitted ilr-transformed large variables as predictors. along quantified uncertainty show unique spatial pattern in MAOC dominated average 59 % ± 17 %, whereas 28 13 11 POC. allocation (TOC) increased depth. vulnerability (i.e. POC/[MAOC+PyOC]) greater areas Mediterranean temperate climates. TOC distribution among most influential uncertainty. Further, diversity climatic pedological conditions suggests mechanisms will control stabilisation dynamics continent, shown model covariates' importance metric. estimated (0–30 cm) be Pg 2 5 PyOC, which consistent previous estimates. their can used modelling forecasting changes response land use change, management, climate change.

Язык: Английский

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Additional carbon inputs to reach a 4 per 1000 objective in Europe: feasibility and projected impacts of climate change based on Century simulations of long-term arable experiments

Biogeosciences, Год журнала: 2021, Номер 18(13), С. 3981 - 4004

Опубликована: Июль 2, 2021

Abstract. The 4 per 1000 initiative aims to maintain and increase soil organic carbon (SOC) stocks for fertility, food security, climate change adaptation mitigation. One way enhance SOC is (C) inputs the soil. In this study, we assessed amount of C that are necessary reach a target by ‰ yr−1 on average, 30 years, at 14 long-term agricultural sites in Europe. We used Century model simulate required level additional these sites. Then, analyzed how would under future scenarios temperature increase. Initial were simulated assuming steady state. compared modeled different treatments experimental (exogenous matter addition one treatment with crop rotations). was calibrated fit control plots, i.e. conventional management without from exogenous or changes rotations, able reproduce stock dynamics. found that, average among selected sites, annual will have 43.15 ± 5.05 %, which 0.66 0.23 MgCha-1yr-1 (mean standard error), respect initial treatment. input lower than similar actually majority experiments. However, might be overestimating effect stocks. At increasing 0.25 % average. This means much higher. Furthermore, estimated even more due warming, 54 120 1 5 ∘C respectively. showed depended linearly stocks, raising concern feasibility objective soils higher potential contribution sequestration, high Our work highlights challenge large scale warmer climate.

Язык: Английский

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Organic Manure Increases Carbon Sequestration Far beyond the “4 per 1000 Initiative” Goal on a Sandy Soil in the Thyrow Long-Term Field Experiment DIV.2

Agriculture, Год журнала: 2022, Номер 12(2), С. 170 - 170

Опубликована: Янв. 25, 2022

Carbon sequestration has been proposed as a way to mitigate the impact of CO2 on climate. At COP21, ‘4 per 1000 Soils for Food Security and Climate’ initiative was launched with goal increase global soil organic carbon (SOC) stocks by 4‰ year. The Thyrow long-term field experiment DIV.2 chosen determine feasibility this 4 under dry sandy conditions in Eastern Germany. effects different fertilizing regimes SOC contents winter rye yields were investigated. Winter is representative crop region grown monoculture experiment. achieved all treatments including unfertilized control, although ploughing takes place straw removed every highest up 0.5 t ha−1 a−1 provided combination mineral manure fertilization. In three out four years, no yield difference observed between mineral-only fertilization (120 kg N) N (97.4 plant available Yields increased over years treatment pure decreased other treatments.

Язык: Английский

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Interactive impacts of climate change and agricultural management on soil organic carbon sequestration potential of cropland in China over the coming decades

The Science of The Total Environment, Год журнала: 2022, Номер 817, С. 153018 - 153018

Опубликована: Янв. 11, 2022

Язык: Английский

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Multi‐modelling predictions show high uncertainty of required carbon input changes to reach a 4‰ target

European Journal of Soil Science, Год журнала: 2022, Номер 73(6)

Опубликована: Ноя. 1, 2022

Abstract Soils store vast amounts of carbon (C) on land, and increasing soil organic ( SOC ) stocks in already managed soils such as croplands may be one way to remove C from the atmosphere, thereby limiting subsequent warming. The main objective this study was estimate amount additional input needed annually increase by 4‰ at 16 long‐term agricultural experiments Europe, including exogenous matter EOM additions. We used an ensemble six models ran them under two configurations: (1) with default parametrization (2) parameters calibrated site‐by‐site fit evolution control treatments (without ). compared model simulations analysed factors generating variability across models. able reproduce stock unfertilised treatments. found that, average, experimental sites 1.5 ± 1.2 Mg ha −1 year per over 30 years, (multi‐model median standard deviation sites). That is, a 119% control. While mean annual temperature, initial had significant effect predicted configuration (i.e., relative mean), only water‐related variables precipitation potential evapotranspiration) explained divergence between when calibrated. Our work highlights challenge agriculture accentuates need increasingly lean multi‐model ensembles predicting trends related processes. To reliability future climate change, we suggest developers better constrain decomposition. Highlights feasibility target studied experiments. An uncertainty predictions. On average sites, conditions. High mainly driven variables.

Язык: Английский

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Contributions of plant breeding to soil carbon storage: Retrospect and prospects

Crop Science, Год журнала: 2023, Номер 63(3), С. 990 - 1018

Опубликована: Янв. 31, 2023

Abstract There is interest in harnessing cropland C storage potential at a large scale to mitigate climate change and improve land productivity. While the effects of soil management practices on have been studied extensively, opportunities select for sequestration traits crop plants remain largely unexplored. This review describes how genetic improvement major US crops may altered stocks historically identifies plant breeding increase stocks. Through quantitative literature review, we find that has led an aboveground residue inputs corn ( Zea mays L.) soybeans Glycine max (L.) Merr) decrease wheat Triticum aestivum L. turgidum L.). Breeding not root:shoot ratio these crops. Given there limited further improvements harvest index, high grain yields necessitate increasing biomass production future. Crop root quality influence stabilization crop‐derived soil, but uncertainty regarding historical changes due breeding, magnitude their effect organic stocks, tradeoffs or synergies with yield. Nevertheless, such as suberin content, rhizodeposition, mycorrhizal association, depth emerge targets more efficient stabilization. also opportunity enhance performance cover crops, double perennial grains, groundcovers, which can annual by occupying fallow periods. Our reveals are many fix cropping systems its meet goals sustainable intensification capture.

Язык: Английский

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