农业工人的阴影材料的比较 减轻农业工人的热暴露
John C Flunker1, Carolyn Reeb-Whitaker2, Érica Chavez-Santos2
1Department of Epidemiology, University of Iowa, Iowa City, IA, USA.
Journal of agromedicine
|March 7, 2026
概括
遮阳材料显著减少农业工人的热量暴露,但效果在类型之间差异很小. 实用因素,如易用性和工人的偏好是成功实现阴影的关键.
科学领域:
- 职业健康 职业健康 职业健康
- 环境科学 环境科学
- 农业安全 农业安全
背景情况:
- 农业工人面临着工作场所热应激的重大风险.
- 美国一些州有职业热法规,但缺乏具体的阴影实施指导.
- 阴影对于通过阻断太阳辐射来减轻热量暴露至关重要.
研究的目的:
- 为了比较不同阴影材料在减少农业工人暴露于热量的有效性.
- 为农业工作场所提供有关阴影方法的决策提供信息.
- 评估工人和主管对阴影材料的偏好.
主要方法:
- 夏季在华盛顿州中部进行了一项定量实地研究.
- 评估了五种不同的阴影材料对它们对太阳辐射和热暴露的影响.
- 使用黑色球体 (BG) 和湿球体温度 (WBGT) 传感器,通过多变量线性混合效应回归分析数据.
- 从农业合作伙伴那里收集了对阴影偏好的定性评估.
主要成果:
- 与没有阴影相比,所有测试的阴影材料都显著减少了BG和WBGT.
- BG的减少在6.1-8.8°C之间,而WBGT的减少在1.7-2.2°C之间.
- 草布和80%的单纤维遮阳布提供了最大的BG和WBGT减少,尽管材料之间的差异不是很大的.
- 使用方便,流动性和工人的偏好被确定为阴影实施的重要因素.
结论:
- 所有测试的阴影材料都为农业工人提供了显著的减热暴露.
- 不同的阴影材料之间没有发现减少热量的实质差异.
- 在选择阴影解决方案时,实际考虑和工人/主管偏好对于成功采用和可持续性至关重要.
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