基于深度主动学习建模和解释技术的全球土地易受风侵蚀的评估
Hamid Gholami1, Aliakbar Mohammadifar2, Yougui Song3,4
1Department of Natural Resources Engineering, University of Hormozgan, Bandar-Abbas, Hormozgan, Iran. hgholami@hormozgan.ac.ir.
Scientific reports
|August 15, 2024
概括
这项研究引入了一种新的深度学习和主动学习方法,用于绘制全球风力侵蚀易感性的地图. GRU-AL模型被证明是最准确的,在意想不到的高度地区确定了高风险区域.
科学领域:
- 环境科学 环境科学
- 地质科学是地球科学.
- 数据科学数据科学数据科学
背景情况:
- 准确地绘制土地易受风力侵蚀的空间地图,对于有效的缓解策略至关重要.
- 现有的方法可能无法完全捕捉影响全球风侵蚀因素的复杂相互作用.
研究的目的:
- 开发和评估一种新的深度学习 (DL) 和主动学习 (AL) 方法,用于全球地表易受风侵蚀的影响.
- 确定控制风侵蚀的关键环境因素,并解释它们对易感性预测的影响.
主要方法:
- 使用了深度学习模型 (重复神经网络 - RNN,门式重复单元 - GRU) 与主动学习 (AL) 集成的组合.
- 采用哈里斯优化 (HHO) 进行特征选择,识别了八个关键变量 (例如风速,土壤碳,高度).
- 应用解释技术,包括协同矩阵,夏普利添加式扩展 (SHAP) 和累积局部效应 (ALE) 图.
主要成果:
- 门式循环单元-主动学习 (GRU-AL) 模型在绘制风侵蚀易感度时表现出卓越的准确性.
- 针对敏感性类别的特定土地覆盖率:38.5%非常低,12.6%低,10.3%中度,12.5%高,和26.1%非常高.
- 解释显示,土壤碳含量,DEM和土壤湿度是极具影响力的因素,土壤碳和降水显示负反.
结论:
- GRU-AL模型为准确的全球风力侵蚀易感度绘制提供了一个强大的框架.
- 在高度地区确定了风侵蚀的新高风险区域,需要进一步调查和有针对性的管理.
- 了解关键变量的协同效应和个人影响,可以增强预测建模,并为缓解努力提供信息.
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