Novel cropping-system strategies in China can increase plant protein with higher economic value but lower greenhouse gas emissions and water use

One Earth, Год журнала: 2023, Номер 6(5), С. 560 - 572

Опубликована: Май 1, 2023

Язык: Английский

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Combined impact of no-tillage and cover crops on soil carbon stocks and fluxes in maize crops

Soil and Tillage Research, Год журнала: 2023, Номер 233, С. 105782 - 105782

Опубликована: Июнь 16, 2023

Soil plays a major role in the carbon cycle for both stocks and respiration since soil organic (SOC) is most important pool CO2 efflux largest source of emissions to atmosphere. The aim this study was understand how combination no-till (NT) cover cropping (CC) influences SOC respiration. measured southwestern France from April October at two distinct sites characterized by contrasting initial contents. Each site included adjoining maize fields which conservation (NT+CC) conventional (CT) practices were used. For with high contents (> 50 tC ha-1 0–30cm layer), 0–90 cm depth (NT+CC: 72.4 ± 10.6, CT: 68.9 9.2 t C ha-1) during growing season 0.57 0.24, 0.54 0.26 g m-2 h-1) not significantly different practices. low contents, 42.7 5.5, 29.7 4.8 0.86 0.32, 0.50 0.34 higher NT+CC than CT Due crop biomass root density, mineralization enhanced. We showed positive effect on stock upper layers but also deeper (60–90 cm) only content environment. At levels, may have reached its sequestration potential, or time implemented long enough observe effects. Our shows that potential sequester large amounts SOC, enabling mitigation greenhouse gas emissions, strongly depends

Язык: Английский

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A marginal abatement cost curve for climate change mitigation by additional carbon storage in French agricultural land

Journal of Cleaner Production, Год журнала: 2022, Номер 383, С. 135423 - 135423

Опубликована: Дек. 2, 2022

Язык: Английский

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Effects of climate change in European croplands and grasslands: productivity, greenhouse gas balance and soil carbon storage

Biogeosciences, Год журнала: 2022, Номер 19(12), С. 3021 - 3050

Опубликована: Июнь 22, 2022

Abstract. Knowledge of the effects climate change on agro-ecosystems is fundamental to identifying local actions aimed maintain productivity and reduce environmental issues. This study investigates perturbation European crop grassland production systems, combining findings from two specific biogeochemical models. Accurate high-resolution management pedoclimatic data were employed. Results have been verified for period 1978–2004 (historical period) projected until 2099 with divergent intensities: Intergovernmental Panel Climate Change (IPCC) projections, Representative Concentration Pathway (RCP) 4.5 RCP8.5. We provided a detailed overview impacts (sowing dates, water demand, nitrogen use efficiency). Biogenic greenhouse gas balance (N2O, CH4, CO2) was calculated, including an assessment gases' sensitivity leading drivers, net carbon budget systems compiled. confirmed rise in first half century (+5 % croplands at +0.2 t DM ha−1 yr−1, +1 grasslands +0.1 yr−1; denotes dry matter), whereas significant reduction expected during 2050–2099, caused by shortening length plant growing cycle associated rising temperatures. effect more pronounced pessimistic scenario (−6.1 −7.7 grasslands), Mediterranean regions central latitudes, confirming regionally distributed impact change. Non-CO2 emissions triggered air temperatures increased exponentially over century, often exceeding CO2 accumulation explored agro-ecosystems, which acted as potential C sinks. The emission factor N2O 1.82 ± 0.07 historical rose up 2.05 0.11 both projections. biomass removal (crop yield, residues exports, mowing animal intake) converted into sources (236 107 Tg eq. yr−1 period), increasing 19 26 especially RCP4.5. Nonetheless, residue restitution might represent strategy overturn balance. Although marked latitudinal gradient, demand will double next few decades croplands, benefit terms yield (+2 +10 century) not contribute substantially losses due perturbation.

Язык: Английский

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Identifying effective agricultural management practices for climate change adaptation and mitigation: A win-win strategy in South-Eastern Australia

Agricultural Systems, Год журнала: 2022, Номер 203, С. 103527 - 103527

Опубликована: Окт. 13, 2022

Язык: Английский

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MERCI: a simple method and decision-support tool to estimate availability of nitrogen from a wide range of cover crops to the next cash crop

Plant and Soil, Год журнала: 2023, Номер 494(1-2), С. 333 - 351

Опубликована: Сен. 20, 2023

Abstract Background and aims Cover crops can efficiently increase nitrogen (N) recycling in agroecosystems. By providing a green-manure effect for the next crop, they allow reduced mineral fertilisation. We developed decision-support tool, called MERCI, to predict N available from cover crop residues over time, single measurement of fresh shoot biomass. Methods coupled large experimental database France with simulation experiment using soil-crop model STICS. More than 25 000 measurements 74 species as sole or bispecific mixtures were collected. Linear regression models, at species, family entire-database level depending on data available, built dry biomass, amount C:N ratio. Dynamics mineralized leaching predicted 24 contrasting sites function carbon (C):N ratio termination date. Results Correlations between biomass amounts strong (r = 0.80-0.96), relatively accurate. Percentages leached simulated by STICS explained mainly ratio, site number months after termination, but different degrees. Conclusion MERCI is an easy robust tool predicting release field, could thus be adopted advisors farmers improve management nutrient temperate arable cropping systems.

Язык: Английский

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AgriCarbon-EO v1.0.1: large-scale and high-resolution simulation of carbon fluxes by assimilation of Sentinel-2 and Landsat-8 reflectances using a Bayesian approach

Geoscientific model development, Год журнала: 2024, Номер 17(3), С. 997 - 1021

Опубликована: Фев. 7, 2024

Abstract. Soil organic carbon storage is a well-identified climate change mitigation solution. Quantification of the soil in cropland for agricultural policy and offset markets using situ sampling would be excessively costly, especially at intrafield scale. For this reason, comprehensive monitoring, reporting, verification (MRV) its explanatory variables large scale need to rely on hybrid approaches that combine remote sensing modelling tools provide budget components with their associated uncertainties Here, we present AgriCarbon-EO v1.0.1: an end-to-end processing chain enables estimation major cover crops resolution (10 m) regional extents (e.g. 10 000 km2) by assimilating data Sentinel-2 Landsat8) physically based radiative transfer (PROSAIL) agronomic models (SAFYE-CO2). The assimilation novel Bayesian approach combines normalized importance look-up table generation. This propagates across from reflectances output variables. After presentation chain, demonstrate accuracy estimates through application over winter wheat southwest France during cropping seasons 2017 2019. We validate outputs flux tower net ecosystem exchange, biomass destructive samples, combined harvester yield maps. Our results show scalability uncertainty proposed do not hinder (net NEE: RMSE =1.68–2.38 gC m−2, R2=0.87–0.77; biomass: =11.34 g R2=0.94). also added value simulations scenario testing pixel field (biomass: bias =-47 −39 % variability). overall analysis shows satisfying accuracy, but it points out represent more processes include synthetic aperture radar enable larger coverage AgriCarbon-EO. paper's findings confirm suitability choices made building as solution MRV scheme diagnose agro-ecosystem fluxes.

Язык: Английский

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The Effect of Crop Diversification and Season on Microbial Carbon Use Efficiency Across a European Pedoclimatic Gradient

European Journal of Soil Science, Год журнала: 2025, Номер 76(2)

Опубликована: Фев. 24, 2025

ABSTRACT Microbial transformation of soil organic matter plays a critical role in carbon (C) cycling making it essential to understand how land use and management practices influence microbial physiology its connection C dynamics. One factor that is likely impact crop diversification via on belowground diversity (e.g., chemical heterogeneity inputs, community composition). However, the effect measures potential effects agricultural soils still unclear. To address this knowledge gap, we sampled topsoil from eight experimental sites covering different across Europe (i.e., cover crops, ley farming, vegetation stripes). We used 18 O‐labelling method analyse efficiency (CUE), growth, respiration biomass C. Additionally, second sampling at five selected examined whether growing season influenced diversification. Meta‐analysis revealed no overall CUE, activity, or (SOC). varied with type measure: crops did not affect processing, stripes increased farming enhanced CUE. The largest variation CUE was observed between samplings same sites, indicating seasonal Temperature, precipitation photosynthetically active radiation predicted ( R 2 = 0.36). While significantly storage our study, both SOC. SOC seems be decoupled highly temporally variable bulk rather relate C‐inputs.

Язык: Английский

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Scenario forecasting of carbon neutrality by combining the LEAP model and future land-use simulation: An empirical study of Shenzhen, China

Sustainable Cities and Society, Год журнала: 2025, Номер unknown, С. 106367 - 106367

Опубликована: Апрель 1, 2025

Язык: Английский

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The Effects of Cover Crops on Multiple Environmental Sustainability Indicators—A Review

Agronomy, Год журнала: 2022, Номер 12(9), С. 2011 - 2011

Опубликована: Авг. 25, 2022

Cover crops have been introduced in European agricultural systems due to their multiple agro-ecological services and environmental benefits, which do not necessarily affect profitability. Our paper follows a systematic literature review approach highlight the results of 51 studies on effects adopting cover crops. We used list 41 agri-environmental sustainability indicators present different impacts pedoclimatic situations. Herein, we positive (e.g., reduced soil erosion nitrate leaching, higher carbon sequestration quality, biodiversity enhancement, mineral fertilizer requirement), but also more variable associated with use management interest for farm economics, nutrient water competition cash crops, improved GHG balance, even if N20 emissions are slightly increased). highlights these synergies among indicators. More research data needed context diverse site-specific conditions farm-management practices, especially between traditional (i.e., C savings) climate change net balance potential global warming).

Язык: Английский

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