Bibliometric analysis of advances in carbon footprint of rice production
Reducing carbon emission of rice field is an important research area for achieving carbon neutrality in agriculture.Comprehensively reviewing the history and frontier of this field could provide guideline for related research in the future.In this paper,based on a detailed analysis of literature related to carbon footprint research of rice field over the past 30 years(1990-2023)and using bibliometric methods,we explored the research process,focus themes,and development trends in this field.The results indicated that carbon footprint in rice fields had received widespread attention from scientists in the area.The number of literatures grew rapidly since 2009,and the contribution rate of published literature in the past ten years had reached 89.2%.A clear core research forces had been observed in the area.China,the United States,and India were the main countries for publishing literatures,which accounting for 75.9%of the total world publications.Ranking of the numbers of publication showed that six of the top ten research institutions were from China,and the Chinese Academy of Sciences ranked first.The analysis of keywords co-occurrence hotspots indicated that the research on carbon footprint of rice field showed an interdisciplinary development trend.Significant progress had been made in the quantity and process of carbon emissions from rice fields,the rate and potential of soil carbon sequestration,and the effects on carbon sequestration and emission reduction of different management measures.The microbial mechanisms of carbon sequestration and carbon emissions in rice fields,as well as the comprehensive evaluation of the ecological,economic and resource utilization benefits of rice production,were the hotspots in this research area.In the future,a scientific,reasonable and standardized carbon footprint evaluation method system should be gradually established.It was necessary to focus on the quantitative assessment of carbon footprint in rice fields at the production scale of farmers.The evidence-based validation of scenario analysis of carbon footprint of rice production was needed.These could provide basis for reducing the carbon footprint of rice fields and achieving low-carbon and green development of rice production.
ricecarbon footprintbibliometricslow-carbon and green
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