相似性(几何)
空间分布
稳定同位素比值
环境科学
δ13C
地理空间分析
地理
数学
计算机科学
地图学
统计
人工智能
量子力学
图像(数学)
物理
作者
Meiling Sheng,Weixing Zhang,Jing Nie,Chunlin Li,A‐Xing Zhu,Hao Hu,Weidong Lou,Xunfei Deng,Xiaonan Lyu,Zhouqiao Ren,Karyne M. Rogers,Syed Abdul Wadood,Yongzhi Zhang,Yujie Yuan
出处
期刊:Food Chemistry
[Elsevier]
日期:2022-12-01
卷期号:397: 133744-133744
被引量:3
标识
DOI:10.1016/j.foodchem.2022.133744
摘要
The authentication of geographical origin of food is important using stable isotope analysis. However, the isotopic databank is still short of comprehensive. The isoscapes model based on environmental similarity is used for the first time to predict the geospatial distribution of δ13C, δ2H and δ18O in Chinese rice in 2017 and 2018. 794 rice samples in 2017 were used to build isoscapes model. Independent verification shows that the predicted isotope distribution from this new approach is of high accuracy, with a root mean square error (RMSE) of 0.51 ‰, 7.09 ‰ and 2.06 ‰ for δ13C, δ2H and δ18O values for 2017, respectively. Our results indicate that it is possible to predict the spatial distribution of stable isotopes in rice using an isoscapes model based on environmental similarity. This novel strategy can enrich and complement a stable isotope reference database for rice origin identification at regional scale.
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