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Shifting rice cropping systems mitigates ecological footprints and enhances grain yield in central China

Citation

Zhou, Y and Liu, K and Harrison, MT and Fahad, S and Gong, S and Zhu, B and Liu, Z, Shifting rice cropping systems mitigates ecological footprints and enhances grain yield in central China, Frontiers in Plant Science, 13 Article 895402. ISSN 1664-462X (2022) [Refereed Article]


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DOI: doi:10.3389/fpls.2022.895402

Abstract

Intensive cereal production has brought about increasingly serious environmental threats, including global warming, environmental acidification, and water shortage. As an important grain producer in the world, the rice cultivation system in central China has undergone excessive changes in the past few decades. However, few articles focused on the environmental impacts of these shifts from the perspective of ecological footprints. In this study, a 2-year field trial was carried out in Hubei province, China, to gain insight into carbon footprint (CF), nitrogen footprint (NF), and water footprint (WF) performance. The three treatments were, namely, double-rice system (DR), ratoon rice system (RR), and rice-wheat system (RW). Results demonstrated that RR significantly increased the grain yield by 10.2215.09% compared with DR, while there was no significant difference in the grain yield between RW and DR in 20182019. All of the calculation results by three footprint approaches followed the order: RR < RW < DR; meanwhile, RR was always significantly lower than DR. Methane and NH3 field emissions were the hotspots of CF and NF, respectively. Blue WF accounts for 40.9042.71% of DR, which was significantly higher than that of RR and RW, primarily because DR needs a lot of irrigation water in both seasons. The gray WF of RW was higher than those of DR and RR, mainly due to the higher application rate of N fertilizer. In conclusion, RR possesses the characteristics of low agricultural inputs and high grain yield and can reduce CF, NF, and WF, considering the future conditions of rural societal developments and rapid demographic changes; we highlighted that the RR could be a cleaner and sustainable approach to grain production.

Item Details

Item Type:Refereed Article
Keywords:water, nitrogen, fertilizer, carbon footprint, methane, nitrous oxide, greenhouse gas emissions, climate change, global warming, soil carbon, rice, food security, wheat, maize, environment, ecological footprint, water footprint, emissions intensity,
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Agriculture, land and farm management
Research Field:Sustainable agricultural development
Objective Division:Environmental Policy, Climate Change and Natural Hazards
Objective Group:Mitigation of climate change
Objective Field:Management of greenhouse gas emissions from plant production
UTAS Author:Liu, K (Mr Ke Liu)
UTAS Author:Harrison, MT (Associate Professor Matthew Harrison)
ID Code:149694
Year Published:2022
Deposited By:TIA - Research Institute
Deposited On:2022-04-07
Last Modified:2022-05-10
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