使用自动机器学习模型预测作物谷物的重金属度
Ye-Xiang Zhang1, Feng-Xian Chen2, Yu-Hong Zhang1
1School of Environmental and Safety Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China.
概括
自动机器学习模型准确预测作物中的重金属度. 有机肥的使用和植物类型是影响HM积累的关键因素,强调需要控制HM在肥料中的投入.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 数据科学数据科学数据科学
背景情况:
- 由于工业化和密集农业,农作物中的重金属 (HM) 污染越来越令人担忧.
- 了解农作物中的HM积累对于食品安全和可持续农业实践至关重要.
研究的目的:
- 使用自动机器学习 (AutoML) 模型预测作物谷物中的HM度.
- 确定影响作物中HM积累的关键因素.
- 评估各种机器学习模型对HM预测的性能.
主要方法:
- 利用来自54个出版物的791个数据集来训练AutoML模型.
- 输入变量包括土壤特性,肥料特性和植物类型.
- 输出变量是作物谷物中 (Cr), (Cd), (Pb), (As) 和 (Hg) 的度.
- 评估深度学习 (DL),梯度增强机 (GBM) 和其他模型.
主要成果:
- 深度学习 (DL) 模型在预测Cr,Pb,As和Hg方面表现出色.
- 梯度增强机 (GBM) 实现了Cd预测的最高准确性.
- 有机肥的应用和植物类型被确定为HM积累的主要驱动因素.
- 发现与有机肥的应用,土壤HM度和沙子含量的正相关性.
- 观察到的负相关性与阴离子交换能力,pH值,有机物质和粘土含量.
结论:
- DL和GBM模型在预测作物谷物HM度方面表现出卓越的性能.
- 严格控制有机肥料中的HM投入对于减轻农业风险至关重要.
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