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Agroforestry as a type of integrated agricultural system has high potential to sink down CO2 and contribute to climate change mitigation. In addition to enhanced food production, healthy agroforestry soils can serve as a significant C-pool to sequester carbon for periods ranging from several decades to millennia. Brazil has a rapidly growing economy supported by advanced research works and sustainable food production systems. Over the past years many studies have been performed on soil organic carbon (SOC) dynamics in agroforestry practices in different farming systems across a wide range of agroecological conditions and biomes. A collective information and knowledge about these studies is lacking. This work aimed at presenting the state-of-the-art, food, health, and systematic analysis on the nexus between SOC and agroforestry by presenting an overview of studies conducted in Brazil between 2010 and 2022. The benefits of agroforestry were also examined. A search in Web of Science was applied for data collection. VOSViewer was used to perform a bibliographic coupling. ArcGIS, Microsoft Excel, and Notepad were used to analyze the results and create comparative geospatial distribution maps. The results reveal that agroforestry involves the integration of crops, livestock, and forest in the same piece of land. This diversified farming system has the benefits of farm-input savings, resource use efficiency, renewable energy accessibility, higher food production, and consequently, improved livelihoods as well as human nutrition and health. The incorporation of trees in farmlands improves soil properties through increased organic matter, deep-root carbon stabilization, and nitrogen fixation plants, which result in greater C sequestration and climate change mitigation. Institutionally, the Brazilian Agricultural Research Corporation (Embrapa) recorded the highest number of publications (24 papers) out of 85 papers. Regionally, the south and southeastern regions had more studies than the north. The findings from this work will contribute to closing the knowledge gap on the potential, and the institutional and chronological trends in literature on agroforestry-SOC nexus and synergy. Thus, encouraging policies, more experimental sites, studies, and publications on the topic, which might help to mitigate climate change, enhance health and food security through the promotion of SOC stocks under agroforestry system (s).

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Soil Organic Carbon and Agroforestry as Integrated Agricultural System in Brazil: State-of-The-Art, Food, Health, and Systematic Analysis

  • 会议论文

  • 发表日期：

    2025年

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  • Chukwudi Nwaogu,
  • Bridget Edewede Diagi,
  • Somtochukwu Mercy Orji,
  • Onyedikachi Joshua Okeke,
  • Mauricio Roberto Cherubin

摘要

Agroforestry as a type of integrated agricultural system has high potential to sink down CO2 and contribute to climate change mitigation. In addition to enhanced food production, healthy agroforestry soils can serve as a significant C-pool to sequester carbon for periods ranging from several decades to millennia. Brazil has a rapidly growing economy supported by advanced research works and sustainable food production systems. Over the past years many studies have been performed on soil organic carbon (SOC) dynamics in agroforestry practices in different farming systems across a wide range of agroecological conditions and biomes. A collective information and knowledge about these studies is lacking. This work aimed at presenting the state-of-the-art, food, health, and systematic analysis on the nexus between SOC and agroforestry by presenting an overview of studies conducted in Brazil between 2010 and 2022. The benefits of agroforestry were also examined. A search in Web of Science was applied for data collection. VOSViewer was used to perform a bibliographic coupling. ArcGIS, Microsoft Excel, and Notepad were used to analyze the results and create comparative geospatial distribution maps. The results reveal that agroforestry involves the integration of crops, livestock, and forest in the same piece of land. This diversified farming system has the benefits of farm-input savings, resource use efficiency, renewable energy accessibility, higher food production, and consequently, improved livelihoods as well as human nutrition and health. The incorporation of trees in farmlands improves soil properties through increased organic matter, deep-root carbon stabilization, and nitrogen fixation plants, which result in greater C sequestration and climate change mitigation. Institutionally, the Brazilian Agricultural Research Corporation (Embrapa) recorded the highest number of publications (24 papers) out of 85 papers. Regionally, the south and southeastern regions had more studies than the north. The findings from this work will contribute to closing the knowledge gap on the potential, and the institutional and chronological trends in literature on agroforestry-SOC nexus and synergy. Thus, encouraging policies, more experimental sites, studies, and publications on the topic, which might help to mitigate climate change, enhance health and food security through the promotion of SOC stocks under agroforestry system (s).