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评估一种同位素模型,用于追踪巴西大豆的地理来源

Maria Gabriella da Silva Araújo¹, Deoclecio Jardim Amorim¹, Rodrigo Figueiredo Almeida¹

¹Center for Nuclear Energy in Agriculture, University of São Paulo, Av. Centenário 303, CEP 13416-000 Piracicaba, São Paulo, Brazil.

|December 23, 2025

概括

稳定同位素分析可以追溯巴西大豆的起源,但准确性因地区而异. 虽然在某些地区有效,但该方法需要改进,以实现广泛的,无森林砍伐的可追溯性.

科学领域:

农业科学农业科学
环境科学环境科学
地质化学地质化学

背景情况:

巴西大豆种植的扩张需要可靠的可追溯系统.
可审计的工具对于验证农产品的原产地至关重要.

研究的目的:

开发和验证一个端到端的工作流程,使用稳定同位素分析来分配植物原产地.
评估巴西大豆基于同位素的可追溯性可行性,并确定局限性.

主要方法:

对大豆样本进行稳定同位素分析 (δ13C, δ15N, δ18O, δD).
使用回归-Kriging构建等边形图和概率赋值.
通过盲目样本测试和耕地掩盖验证.

主要成果:

δ18O和δD同位素显示出强大的空间结构,适合来源推断.
δ13C和δ15N同位素显示出有限的空间自相关性和介位值.
可靠的原产地确认主要在巴西东北部和南里约格兰德杜苏尔州实现,其他地方表现较差.

结论:

开发的工作流程为基于同位素的原产地验证提供了一个透明的基础.
目前的同位素分析方法显示出潜力,但需要进一步改进,以便在没有森林砍伐的可追溯性下进行操作部署.
同位素空间结构的区域差异影响大豆原产地分配的可靠性.

关键词:

商品的可追溯性商品的可追溯性地理分配地理分配冰岛的风景消失了空间插值模型的空间插值模型.

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