The potential of cover crops to increase soil organic carbon storage in German croplands

Plant and Soil, Год журнала: 2022, Номер 488(1-2), С. 157 - 173

Опубликована: Апрель 22, 2022

Abstract Aims Soil organic carbon (SOC) stocks of croplands can be enhanced by targeted management, which boosts soil fertility and contributes to climate change mitigation. One SOC sequestration option is adopting cover crops. The aim this study was quantify the potential crops in Germany. Methods We simulated scenarios on 1,267 cropland sites with site-specific management data using an model ensemble consisting RothC C-TOOL. A new method developed estimate input from that included effects climate, sowing date species crop biomass production. Results recent area could tripled 30% arable land This would enhance total 12% increase 35 Tg within 50 years, corresponding annual 0.06 Mg C ha -1 , 2.5 CO 2 or 0.8 per mill current 0–30 cm depth. On crops, 0.28–0.33 a accumulated years. Our simulations predicted even if full for growth were realised, there still decline German years due underlining negative trend. Conclusions Cover alone cannot turn sources sinks. However, growing them reduces bare fallow periods losses thus effective mitigation strategy agriculture.

Язык: Английский

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Biogeochemical constraints on climate change mitigation through regenerative farming

Biogeochemistry, Год журнала: 2022, Номер 161(1), С. 9 - 17

Опубликована: Июнь 14, 2022

Язык: Английский

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Urbanization-led land cover change impacts terrestrial carbon storage capacity: A high-resolution remote sensing-based nation-wide assessment in Pakistan (1990–2020)

Environmental Impact Assessment Review, Год журнала: 2023, Номер 105, С. 107396 - 107396

Опубликована: Дек. 20, 2023

Язык: Английский

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Common agronomic adaptation strategies to climate change may increase soil greenhouse gas emission in Northern Europe

Agricultural and Forest Meteorology, Год журнала: 2024, Номер 349, С. 109966 - 109966

Опубликована: Март 13, 2024

Climate change poses a significant threat to agriculture, highlighting the need for adaptation strategies reduce its impacts. Agronomic strategies, such as changes in planting dates, fertilization, and irrigation, might sustain crop yield. However, their impact on soil greenhouse gas (GHG) emission is unknown under future climate scenarios. Using LandscapeDNDC model, we assessed effect of agronomic (early sowing, increased fertilization dose, irrigation amount) GHG emission, yield, yield-scaled emission. A diversified rotation (potato – winter wheat spring barley faba bean) long-term experiment Denmark was used model validation. The practices were implemented two representative concentration pathways (RCPs; 4.5 8.5) five coupled global circulation regional models. scenarios contrasted against baseline scenario current management practices. Soil-related variables showed better fit (refined index agreement ≥ 0.38) lower errors (mean absolute error ≤ 8.18) than crop-based outputs total yield ∼29 (± 3) t DW ha−1, ∼3.02 1.39) CO2e ha−1 (RCP8.5) obtained system 2071–2100. Early sowing combination with decreased compared by 6.1 4.8 %, respectively (RCP8.5). Conversely, early produced higher yields 2.3 4.0 All emissions (ranging from 4.1 17.8 %) well (varying 3.0 12.9 highest simulated irrigation. Our study indicates that will increase coming decades needed food production may further exacerbate this

Язык: Английский

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Achievable agricultural soil carbon sequestration across Europe from country‐specific estimates

Global Change Biology, Год журнала: 2021, Номер 27(24), С. 6363 - 6380

Опубликована: Сен. 20, 2021

The role of soils in the global carbon cycle and reducing GHG emissions from agriculture has been increasingly acknowledged. '4 per 1000' (4p1000) initiative become a prominent action plan for climate change mitigation achieve food security through an annual increase soil organic (SOC) stocks by 0.4%, (i.e. 4‰ year). However, feasibility 4p1000 scenario and, more generally, capacity individual countries to implement sequestration (SCS) measures remain highly uncertain. Here, we evaluated country-specific SCS potentials agricultural land 24 Europe. Based on detailed survey available literature, estimate that between 0.1% 27% greenhouse gas (GHG) can potentially be compensated annually within next decades. Measures varied widely across countries, indicating differences environmental conditions practices. None countries' potential reached aspirational goal initiative, suggesting order this goal, wider range implementation pathways need explored. Yet, exceeded those previous pan-European modelling scenarios, underpinning general include national/regional knowledge expertise improve estimates potentials. complexity chosen measurement approaches ranked tier 1 3 included effect different controlling factors, methodological improvements standardization accounting are urgently required. Standardization should assessment key factors such as realistic areas, technical practical feasibility, trade-offs with other change. Our analysis suggests together improved data sharing harmonization crucial better quantify offsetting anthropogenic at level.

Язык: Английский

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Carbon storage in agricultural topsoils and subsoils is promoted by including temporary grasslands into the crop rotation

Geoderma, Год журнала: 2022, Номер 422, С. 115937 - 115937

Опубликована: Май 13, 2022

Atmospheric C sequestration in agricultural soils is viewed as one of the most promising negative emission technologies currently available. Nonetheless, it remains unclear how strongly soil organic carbon (SOC) stocks respond to practices, especially for subsoil. Here, we assess SOC storage potential croplands and presence temporary grasslands (TG) crop rotation affects stocks. We developed a new approach correct bias bulk density (BD) induced by sampling conditions land-use effects with data-driven model predict BD fine (<2 mm) reference condition. Using 54 permanent grassland cropland sites various proportions TG from monitoring network Switzerland, showed that stock differences down 50-cm depth between (maximum: 3.0 ± 0.8 kg m−2) depend on proportion rotation, regardless clay content pH. An increase 10% would induce gain 0.40 0.13 m−2. The responses topsoil (0–20 cm) subsoil (20–50 were linear equivalent. effect have been underestimated 58% without accounting response 16% corrections. conversion all study region potentially store quantity equivalent anthropogenic greenhouse gas emissions generated same during year. Although technology relatively modest compared former expectations, findings demonstrate manage its associated ecosystem services at large scales deep layers.

Язык: Английский

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Incorporating agricultural practices in digital mapping improves prediction of cropland soil organic carbon content: The case of the Tuojiang River Basin

Journal of Environmental Management, Год журнала: 2023, Номер 330, С. 117203 - 117203

Опубликована: Янв. 3, 2023

Язык: Английский

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Assessing uncertainties and discrepancies in agricultural greenhouse gas emissions estimation in China: A comprehensive review

Environmental Impact Assessment Review, Год журнала: 2024, Номер 106, С. 107498 - 107498

Опубликована: Март 26, 2024

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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Incorporating energy cover crops for biogas production into agricultural systems: benefits and environmental impacts. A review

Agronomy for Sustainable Development, Год журнала: 2022, Номер 42(4)

Опубликована: Июнь 21, 2022

Abstract Some European countries are exploring the idea of replacing dedicated crops with energy cover for biogas production. Indeed, can generate consequential biomass without competing food land use. However, potential benefits and impacts this choice not fully understood. Here, we review what is known about consequences crop usage by examining management regimes digestate use, including on environment cropping system performance. First, compared to crops, intensively managed produce more (< 5 t DM/ha vs. up 16 DM/ha). Second, nitrogen conserved during anaerobic digestion readily available in than residues. ammonia lost via volatilization, which could reduce use efficiency, depending storage conditions application method. Third, 43–80% crops’ initial carbon transformed into biogas. That said, levels soil may nonetheless resemble those obtained left behind because stabilized roots stubble soil. Fourth, act as multiservice reducing nitrate leaching, improving microbial activity, enhancing physical properties fallow period. Fifth, have certain disservices, such compaction, need additional inputs (e.g., irrigation, fertilization, pesticides), reduced groundwater recharge, following yield. In summary, expanding production does seem be an environmental threat. care must taken avoid intensification irrigation lengthening growing periods boost biomass,

Язык: Английский

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