应用机器学习方法来预测不同类型的土壤中的氨运输,并评估控制因素的贡献
Bingcong Feng1, Jie Ma2, Yong Liu2
1College of Natural Resources and Environment, Northwest Agriculture & Forestry University, Yangling 712100, China; Key Laboratory for Environmental Factors Control of Agro-Product Quality Safety, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China; Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China.
Ecotoxicology and environmental safety
|August 18, 2024
概括
机器学习确定了影响氨 (NH4+-N) 运输的关键土壤因素. 阴离子交换能力和总有机碳显著影响营养保留,有助于防止因气损失造成的环境损害.
科学领域:
- 土壤科学 土壤科学
- 环境科学 环境科学
- 数据科学数据科学数据科学
背景情况:
- 从土壤中丧失气会给环境带来重大风险.
- 提高使用效率对于可持续农业至关重要.
- 鉴定影响 (NH4+-N) 运输的因素是复杂的,因为土壤的特性不同.
研究的目的:
- 利用机器学习 (ML) 精确识别控制土壤中NH4+-N运输延迟的主要因素.
- 为了提高对NH+-N固定的理解,并减轻环境污染.
主要方法:
- 使用柱体实验和运输建模来研究NH4+-N运输,并计算减速因子 (Rf).
- 拉索和脊回归选了ML模型输入的土壤物理化学参数.
- 评估了6个ML模型,使用交叉验证确定极端梯度提升 (XGB) 为最佳.
主要成果:
- 在预测NH4+-N运输方面,XGB模型实现了高准确性 (测试r2 = 0.97).
- 电离子交换能力 (CEC),总有机碳 (TOC) 和高被确定为最有影响力的因素.
- 对NH4+-N运输的最大抵抗发生在CEC>6cmol+kg-1和TOC>40g kg-1时.
结论:
- 这项研究提出了一种基于ML的新方法,用于预测土壤中的NH4+-N运输动态.
- 研究结果为管理土壤营养素和防止环境污染提供了关键的见解.
- 结果可以为土壤营养损失的早期预警系统的开发提供信息.
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