The simple AMG model accurately simulates organic carbon storage in soils after repeated application of exogenous organic matter

Nutrient Cycling in Agroecosystems, Journal Year: 2020, Volume and Issue: 117(2), P. 215 - 229

Published: April 9, 2020

Language: Английский

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Mineralization and speciation of organic phosphorus in a sandy soil continuously cropped and phosphorus-fertilized for 28 years

Soil Biology and Biochemistry, Journal Year: 2023, Volume and Issue: 178, P. 108938 - 108938

Published: Jan. 6, 2023

Language: Английский

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A new method to assess sustainability of agricultural systems by integrating ecosystem services and environmental impacts

Journal of Cleaner Production, Journal Year: 2023, Volume and Issue: 415, P. 137784 - 137784

Published: June 17, 2023

Language: Английский

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Integrated crop and livestock systems increase both climate change adaptation and mitigation capacities

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 912, P. 169061 - 169061

Published: Dec. 6, 2023

Language: Английский

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Assessment of land degradation using machine‐learning techniques: A case of declining rangelands

Land Degradation and Development, Journal Year: 2020, Volume and Issue: 32(3), P. 1452 - 1466

Published: Oct. 10, 2020

Abstract Increased use and increasing demands pose serious threats to rangelands. In this study, we document a pronounced downward trend in rangeland quality the Alborz Mountains Firozkuh County, Iran using analysis of three machine‐learning models (MLMs). A total 1,147 transects were established evaluate trends from field data collected over 7‐year period. Twelve independent conditional factors analyzed for their relationships range through MLMs—Random Forest (RF), classification regression tree (CART), support vector machine (SVM). Based on assessments trained validated models, RF, with ROC‐AUC = 0.96, was determined be most robust. The results show that about 20% study area is critically degraded condition. Distances roads livestock density are two strongly linked degradation. These results, combination observations, indicate rangelands face major challenges (overgrazing early grazing) require new strategies mitigate prevent damages. This may provide important guidance evaluating conditions other regions world.

Language: 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, Journal Year: 2021, Volume and Issue: 18(13), P. 3981 - 4004

Published: July 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.

Language: Английский

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Combining diversification practices to enhance the sustainability of conventional cropping systems

European Journal of Agronomy, Journal Year: 2021, Volume and Issue: 127, P. 126279 - 126279

Published: April 28, 2021

A major path helping agriculture achieve the dual challenges of production and environmental preservation, consists transitioning from current, external input-based, conventional farming systems to a biodiversity-based agricultural system that rely more on ecosystem services. One lever this transition diversifying agri-food using practices such as rotation extension, intercropping (IC), multiple cropping or multi-services cover crops (MSCC) implementation. Here, we investigated what extent combination diversification could contribute enhancement sustainability current through an ex ante evaluation. We compared performances five diversified (DIV) arable crop regions France their local less reference (REF) by calculating various criteria implementing multi-criteria decision aid model. 76 assessing three dimensions were calculated (10, 17 49 for economic, social respectively). Our analysis showed improve while maintaining priori economic at satisfactory levels according expert working group. The DIV always had lower greenhouse gas (GHG) emissions REF often improved air water quality above- belowground biodiversity. However, may also cause drawbacks some indicators, negative impacts observed from, gross margin, NO3 lixiviation, NH3 volatilization pesticide use, in cases. suggested effect indicator can be either positive pedo-climatic context, level performance compromises management response objectives performance.

Language: Английский

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Current and potential recycling of exogenous organic matter as fertilizers and amendments in a French peri-urban territory

Resources Conservation and Recycling, Journal Year: 2021, Volume and Issue: 169, P. 105523 - 105523

Published: March 6, 2021

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Defining Quantitative Targets for Topsoil Organic Carbon Stock Increase in European Croplands: Case Studies With Exogenous Organic Matter Inputs

Frontiers in Environmental Science, Journal Year: 2022, Volume and Issue: 10

Published: Feb. 14, 2022

The EU Mission Board for Soil Health and Food proposed a series of quantitative targets European soils to become healthier. Among them, current soil organic carbon (SOC) concentration losses in croplands (0.5% yr −1 on average at 20 cm depth) should be reversed an increase 0.1–0.4% by 2030. Quantitative are used policy makers incentivize the implementation agricultural practices that SOC stocks. However, there different approaches calculate them. In this paper, we analyzed effect exogenous matter (EOM) inputs evolution stocks, with particular focus new First, illustrated through two case-study experiments set when stock is calculated considering as reference: 1) level onset experiment 2) trend baseline, i.e., control treatment without EOM addition. Then, 11 long-term (LTEs) addition estimate amount (C) input needed reach 0.1 0.4% Food, approaches. We found that, target relative experiment, 2.51 2.61 Mg C ha additional were necessary, respectively. Reaching baseline required 1.38 1.77 input, Depending calculation method used, estimated amounts each significantly from other. Furthermore, quality represented retention rate material (EOM crop residue), had significant variation Our work highlights necessity take into consideration especially decreasing independently baseline.

Language: 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, Journal Year: 2022, Volume and Issue: 73(6)

Published: Nov. 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.

Language: Английский

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