Strong N2O uptake capacity of paddy soil under different water conditions

Zhong, Jinmei; Song, Yaqi; Yang, Man; Wang, Wei; Li, Zhaohua; Zhao, Liang; Li, Kun

doi:10.1016/j.agwat.2023.108146

Cited by 3 publications

(2 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An increased soil clay content correlates with higher porosity and improved water retention capabilities, leading to a greater reduction of soil N to N 2 O under anaerobic conditions . However, paddy soils with high clay content are characterized by low permeability and prolonged N 2 O diffusion time, which is conducive to N 2 O uptake and consumption . The mechanisms by which the soil clay content affects N 2 O emissions by determining the prevailing conditions warrant further exploration through soil biochemical analyses.…”

Section: Resultsmentioning

confidence: 99%

“…53 However, paddy soils with high clay content are characterized by low permeability and prolonged N 2 O diffusion time, which is conducive to N 2 O uptake and consumption. 58 The mechanisms by which the soil clay content affects N 2 O emissions by determining the prevailing conditions warrant further exploration through soil biochemical analyses. As evidenced in previous studies, 19,59 N fertilizer application rates constituted an important factor driving the spatiotemporal variations in N 2 O emissions of paddy soil.…”

Section: Relative Importance Of Different Drivers To Ghg Emissionsmentioning

confidence: 99%

See 1 more Smart Citation

Toward Low-Carbon Rice Production in China: Historical Changes, Driving Factors, and Mitigation Potential

Li,

Lu,

et al. 2024

Environ. Sci. Technol.

View full text Add to dashboard Cite

Under the "Double Carbon" target, the development of low-carbon agriculture requires a holistic comprehension of spatially and temporally explicit greenhouse gas (GHG) emissions associated with agricultural products. However, the lack of systematic evaluation at a fine scale presents considerable challenges in guiding localized strategies for mitigating GHG emissions from crop production. Here, we analyzed the countylevel carbon footprint (CF) of China's rice production from 2007 to 2018 by coupling life cycle assessment and the DNDC model. Results revealed a significant annual increase of 74.3 kg CO 2 -eq ha −1 in the average farm-based CF (FCF), while it remained stable for the product-based CF (PCF). The CF exhibited considerable variations among counties, ranging from 2324 to 20,768 kg CO 2 -eq ha −1 for FCF and from 0.36 to 3.81 kg CO 2 -eq kg −1 for PCF in 2018. The spatiotemporal heterogeneities of FCF were predominantly influenced by field CH 4 emissions, followed by diesel consumption and soil organic carbon sequestration. Scenario analysis elucidates that the national total GHG emissions from rice production could be significantly reduced through optimized irrigation (48.5%) and straw-based biogas production (18.0%). Moreover, integrating additional strategies (e.g., advanced crop management, optimized fertilization, and biodiesel application) could amplify the overall emission reduction to 76.7% while concurrently boosting the rice yield by 11.8%. Our county-level research provides valuable insights for the formulation of targeted GHG mitigation policies in rice production, thereby advancing the pursuit of carbon-neutral agricultural practices.

show abstract

Section: Resultsmentioning

confidence: 99%