Ratoon rice-duck co-culture maintains rice grain yield and decreases greenhouse gas emissions in central China

Du, Chanchan; Hu, Luanluan; Yuan, Shen; Xu, Liu; Wang, Weibin; Cui, Kehui; Peng, Shaobing; Huang, Jianliang

doi:10.1016/j.eja.2023.126911

Cited by 6 publications

(1 citation statement)

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“…China is a large producer and consumer of rice, with China's rice production reaching 2.08×10 8 t in 2022, placing it first in the world [5]. Rice paddies are considered to be a significant source of greenhouse gas emissions, accounting for approximately 11% and 30% of global N 2 O and CH 4 emissions from agroecosystems, respectively [6][7][8]. As a result, Chinese agriculture must implement significant carbon sequestration and emission reduction strategies to contribute to the objective of carbon neutrality by 2060 [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Comparative Analyses of Carbon Footprints and Economic Benefits: Rice-Shrimp Co-Cropping, Rice-Crab Co-Cropping and Rice Monoculture Models

Yang,

Shao,

Chu

et al. 2023

Pol. J. Environ. Stud.

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An objective and complete assessment of the carbon footprint of rice-fishery co-cropping model is critical for the rice-farming industry's low-carbon and green growth. Based on field experiments and the life cycle assessment (LCA) methodology, a comprehensive carbon footprint assessment of rice monoculture, rice-shrimp co-cropping, and rice-crab co-cropping models was conducted in this study, and the NEEB of different rice farming models was calculated based on the economic benefits. The carbon footprints per unit area of rice monoculture, rice-shrimp co-cropping, and rice-crab co-cropping models were 14122.65 kg (CO 2 -eq)•hm -2 , 13791.78 kg (CO 2 -eq)•hm -2 , and 15617.13 kg (CO 2 -eq)•hm -2 , respectively, according to the data. Hotspot analysis revealed that the carbon footprint composition of the rice-shrimp and rice-crab co-cropping models was influenced more by CH 4 emissions, energy use, and feed inputs. Due to the greater economic production values of rice-shrimp and rice-crab co-cropping modes, the NEEB of these two modes increased by 81.45% and 69.52%, respectively, as compared to rice monoculture. Overall, rice-shrimp and rice-crab co-cropping models can reduce emissions and improve paddy field efficiency to some extent when compared to rice monoculture and rice-crab co-cropping models, but attention should be paid to the point of trade-off between carbon footprints and economic benefits in order to promote the green and efficient development of the rice-fishery co-cropping model. The technique utilized in this work can give technical assistance for a more thorough carbon footprint assessment of multifunctional agricultural production systems.

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