Environmental controls and long-term changes on carbon stocks under agricultural lands

Ramírez, Paulina B.; Calderón, Francisco J.; Fonte, Steven J.; Bonilla, Carlos A.

doi:10.1016/j.still.2018.10.018

Cited by 30 publications

(6 citation statements)

References 68 publications

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“…Our simulations revealed a significant decrease in SOC stock under all future climate scenarios, consistent with previous studies conducted in Mollisol regions (Gao et al, 2008;Ramírez et al, 2019;Bao et al, 2023). The decline in C input for each fertilizer practice, due to the reduction of maize and soybean productions under the RCP scenarios, likely played a predominant role in the SOC decline.…”

Section: Response Of the Carbon Sequestration To Climate Changesupporting

confidence: 88%

Both yields of maize and soybean and soil carbon sequestration in typical Mollisols cropland decrease under future climate change: SPACSYS simulation

Liang,

Sun,

Longdoz

et al. 2024

Front. Sustain. Food Syst.

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Although Mollisols are renowned for their fertility and high-productivity, high carbon (C) losses pose a substantial challenge to the sustainable provision of ecosystem services, including food security and climate regulation. Protecting these soils with a specific focus on revitalizing their C sequestration potential emerges as a crucial measure to address various threats associated with climate change. In this study, we employed a modeling approach to assess the impact of different fertilization strategies on crop yield, soil organic carbon (SOC) stock, and C sequestration efficiency (CSE) under various climate change scenarios (baseline, RCP 2.6, RCP 4.5, and RCP 8.5). The process-based SPACSYS model was calibrated and validated using data from two representative Mollisol long-term experiments in Northeast China, including three crops (wheat, maize and soyabean) and four fertilizations (no-fertilizer (CK), mineral nitrogen, phosphorus and potassium (NPK), manure only (M), and chemical fertilizers plus M (NPKM or NM)). SPACSYS effectively simulated crop yields and the dynamics of SOC stock. According to SPACSYS projections, climate change, especially the increased temperature, is anticipated to reduce maize yield by an average of 14.5% in Harbin and 13.3% in Gongzhuling, and soybean yield by an average of 10.6%, across all the treatments and climatic scenarios. Conversely, a slight but not statistically significant average yield increase of 2.5% was predicted for spring wheat. SOC stock showed a decrease of 8.2% for Harbin and 7.6% for Gonghzuling by 2,100 under the RCP scenarios. Future climates also led to a reduction in CSE by an average of 6.0% in Harbin (except NPK) and 13.4% in Gongzhuling. In addition, the higher average crop yields, annual SOC stocks, and annual CSE (10.15–15.16%) were found when manure amendments were performed under all climate scenarios compared with the chemical fertilization. Soil CSE displayed an exponential decrease with the C accumulated input, asymptotically approaching a constant. Importantly, the CSE asymptote associated with manure application was higher than that of other treatments. Our findings emphasize the consequences of climate change on crop yields, SOC stock, and CSE in the Mollisol regions, identifying manure application as a targeted fertilizer practice for effective climate change mitigation.

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Section: Response Of the Carbon Sequestration To Climate Changesupporting

confidence: 88%

Both yields of maize and soybean and soil carbon sequestration in typical Mollisols cropland decrease under future climate change: SPACSYS simulation

Liang,

Sun,

Longdoz

et al. 2024

Front. Sustain. Food Syst.

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“…Later, soil C in the fallowed plots was restored to similar levels as those in other plots. The reduction in soil C from abandonment to recultivation in this study was similar to the changes in soil C in low-production regions (Ramírez et al, 2019). Less C supplementation from recultivation crop can contribute to a significant decrease in soil C, and crop residue C supplementation from well-grown crops can recover the soil C and N the subsequent year.…”

Section: Differences In Land Use Before Recultivationsupporting

confidence: 76%

“…Studies on the changes in agricultural land use have mostly focused on low-productivity regions owing to water shortage and/or low soil fertility in different parts of the world (e.g. Ramírez et al, 2019). Little is known about how ecosystem C stocks and C partitioning change with agricultural development and abandonment under cool and humid climates.…”

Section: Introductionmentioning

confidence: 99%

Soil carbon balance after the temporal cessation of cultivation under cool and subtropical humid climate in Japan

Shimoda

2021

Soil Use and Management

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The decreasing number of farm households in Japan is beginning to affect soil carbon and nitrogen balance. At both cool and warm sites, the soil C level was the lowest in the second year of the experiment, and thereafter, it gradually increased. The change in soil C concentration was negative at the warmer site; however, the content reached 119 g C m −2 at the cooler site. Soil N showed a significant increase of 14.3 g N m −2 from the first year to over 4 years at the cooler site. At the cooler site, less soil decomposition contributed to the retention of soil C and N, and the dominant deciduous woody plants increased the supplemental C and N content. Land-use management strategies involving conventional cultivation, abandonment and abandonment to recultivation did not affect the soil C and N balance for over 6 years. Fallow tillage to recultivation was less effective in retaining the C pool in the fifth year of the experiment, causing significantly lower soil C content (1.97 kg C m −2 ) than abandonment to recultivation (2.20 kg C m −2 ). Whereas the soil C content increased in the subsequent year (i.e. the sixth year), less productivity of recultivation crop (white mustard) contributed to a significant decrease in soil C, and abundant residue of winter wheat could recover the soil C and N in the subsequent year. The results suggest that agricultural abandonment can preserve soil C in cool regions and that the introduction of winter crops can maintain the C pool.

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“…Although some significant progress has been made in promoting environmentally responsible agriculture, and conditions have been created for the transition to an efficient agrarian economy from the point of view of the use of available resources, the issue of greenhouse gas emissions from numerous agriculture has arisen academic debates. The need to reduce carbon emissions and develop their level of absorption at the farm level acts, as noted in some specialized studies (Ramírez et al, 2019;Aznar-Sánchez et al, 2019) as an incentive in promoting the use of biomass as a raw material in the production of different categories of organic products, for the decarbonisation of agricultural production as a whole and the consolidation of carbon reservoirs.…”

Section: Greenhouse Gas Emissions Tend To Emit Forecasts and Targets For Eumentioning

confidence: 99%

Considerations regarding improving the ecological and environmental performance of agriculture

Popescu

Safta

2020

Proceedings of the International Conference on Business Excellence

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The agri-environment economy provides a significant database for environmental policy decisions. The prioritization of an actionable behavior regarding the agri-environment vulnerabilities, favors the orientation of the agriculture through more environmentally responsible methods, represents a current trend, with a broad support within the Common Agricultural Policy (CAP). The promotion of an agricultural model capable of ensuring its own sustainability implies the existence of a set of common values and rules in which to buy as many producers as possible, with a common objective, respectively to reduce greenhouse emissions and to promote an ecological responsibility of the production model. Agriculture can significantly contribute to achieving the objectives of reducing the negative effects of climate change, not only from the perspective of ensuring the conservation of carbon reservoirs, which are still present in the soil, or by expanding their size and favoring the formation of humus, but in particular by reducing the consumption of energy needed in agricultural production and the supply of biomass needed for renewable energy production., much greener. The transition to a low carbon economy, more environmentally responsible, in the national agricultural sector can contribute, both to the significant increase of food security, but also to the optimization of the agricultural production structures, which will thus conform more easy to environmental requirements. It becomes primarily the role of implementation in agriculture of feasible standards more environmentally friendly, and environmentally friendly in this context, the research in the field and the continuous training acquiring new values. An important role is played by the implementation of best practice methods in the proper management of the land and the promotion of organic production models can significantly contribute to increasing the carbon absorption in the soil and, at the same time, to indicate possible improvments in their performance.

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Environmental controls and long-term changes on carbon stocks under agricultural lands

Cited by 30 publications

References 68 publications

Both yields of maize and soybean and soil carbon sequestration in typical Mollisols cropland decrease under future climate change: SPACSYS simulation

Both yields of maize and soybean and soil carbon sequestration in typical Mollisols cropland decrease under future climate change: SPACSYS simulation

Soil carbon balance after the temporal cessation of cultivation under cool and subtropical humid climate in Japan

Considerations regarding improving the ecological and environmental performance of agriculture

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