Trade-offs on carbon and nitrogen availability lead to only a minor effect of elevated CO2 on potential denitrification in soil

Liu, Can; Bol, Roland; Ju, Xiaotang; Tian, Jing; Wu, Di

doi:10.1016/j.soilbio.2022.108888

Cited by 7 publications

(2 citation statements)

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“…The soil C/N ratio, agrosystem N capital, and redistribution of N for crops and soil were significantly altered under eCO 2 according to field studies using Free Air CO 2 Enrichment (FACE) and open top chambers in the United States (Zou et al, 2020). Liu et al (2022) found that eCO 2 enhanced crop N demand by influencing biomass through accelerating the rate of photosynthesis of the crop based on a global meta-analysis. Additionally, the physiological response of crop to eCO 2 , such as stomatal closure, will result in reduced evapotranspiration (Swann et al, 2016), leading to increased soil moisture, and subsequently, elevated runoff and N loss by runoff (Fowler et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Liu et al. (2022) found that eCO 2 enhanced crop N demand by influencing biomass through accelerating the rate of photosynthesis of the crop based on a global meta‐analysis. Additionally, the physiological response of crop to eCO 2 , such as stomatal closure, will result in reduced evapotranspiration (Swann et al., 2016), leading to increased soil moisture, and subsequently, elevated runoff and N loss by runoff (Fowler et al., 2019).…”

Section: Introductionmentioning

confidence: 99%

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Assessing the Response Mechanisms of Elevated CO₂ Concentration on Various Forms of Nitrogen Losses in the Golden Corn Belt

Zhang,

Han,

Wen

et al. 2024

Water Resources Research

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Nitrogen (N) loss is a significant source of water quality pollution in alluvial watersheds. However, the mechanisms linking N loss and elevated CO2 concentration (eCO2) are not well recognized. In this study, we comprehensively calibrated the SWAT model equipped with a dynamic CO2 input and response module to investigate the response mechanisms between multiform N losses and eCO2 in a representative large‐scale watershed. Results revealed nitrate loss under eCO2 exceeding 100% in some upstream zones under the SSP5‐8.5 scenario (P < 0.05) compared to the constant CO2 concentration. This was directly related to the great increase in hydrological variables, which were the carriers of N losses, and the intensive inputs of N fertilizer. Results also found that nitrate leaching was greater than the other two processes for future periods, peaking at 309.3%, as compared to the baseline period. The findings suggested reducing fertilizer inputs by 10%–20% was promising, especially for reducing nitrate loss through runoff and leaching by up to 17.7% and 12.2%. This study explored the mechanisms of increased N loss in response to eCO2 and provided scientific evidence for early warning and making decisions to improve water quality at a large watershed scale.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Assessing the Response Mechanisms of Elevated CO₂ Concentration on Various Forms of Nitrogen Losses in the Golden Corn Belt

Zhang,

Han,

Wen

et al. 2024

Water Resources Research

View full text Add to dashboard Cite

show abstract

Synergistic effect of elevated CO2 and straw amendment on N2O emissions from a rice–wheat cropping system

Yan,

Liu,

Revillini

et al. 2024

Biol Fertil Soils

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Cultivar mixtures increase crop yields and temporal yield stability globally. A meta-analysis

Huang,

Döring,

Zhao

et al. 2024

Agron. Sustain. Dev.

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Trade-offs on carbon and nitrogen availability lead to only a minor effect of elevated CO2 on potential denitrification in soil

Cited by 7 publications

References 79 publications

Assessing the Response Mechanisms of Elevated CO₂ Concentration on Various Forms of Nitrogen Losses in the Golden Corn Belt

Assessing the Response Mechanisms of Elevated CO₂ Concentration on Various Forms of Nitrogen Losses in the Golden Corn Belt

Synergistic effect of elevated CO2 and straw amendment on N2O emissions from a rice–wheat cropping system

Cultivar mixtures increase crop yields and temporal yield stability globally. A meta-analysis

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Trade-offs on carbon and nitrogen availability lead to only a minor effect of elevated CO2 on potential denitrification in soil

Cited by 7 publications

References 79 publications

Assessing the Response Mechanisms of Elevated CO2 Concentration on Various Forms of Nitrogen Losses in the Golden Corn Belt

Assessing the Response Mechanisms of Elevated CO2 Concentration on Various Forms of Nitrogen Losses in the Golden Corn Belt

Synergistic effect of elevated CO2 and straw amendment on N2O emissions from a rice–wheat cropping system

Cultivar mixtures increase crop yields and temporal yield stability globally. A meta-analysis

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Assessing the Response Mechanisms of Elevated CO₂ Concentration on Various Forms of Nitrogen Losses in the Golden Corn Belt

Assessing the Response Mechanisms of Elevated CO₂ Concentration on Various Forms of Nitrogen Losses in the Golden Corn Belt