Poplar forests are cultivated worldwide on extended areas, contributing to the provision of wood for industries. Their management is intensive, especially in planting operations which are done, in many parts of the world, by the use of manual labor. This situation raises the question on their sustainability from an ergonomics point of view. Particularly, the postural risk is in question, as uncomfortable work postures may cause musculo-skeletal disorders. Two types of planting operations (large cutting—CP and bare-root seedling—SP) were selected as representatives for the evaluation of postural risks which was carried out for 14 subjects. Based on the analysis of approximately 14,500 images (approximately 67 h of field study), the postural risk indexes were estimated at 259 and 250 for the CP and SP, respectively. No significant differences were found between the operations, but the high share of effective planting tasks and their associated postural risk indexes generated these concerning results. The main conclusion is that these kinds of planting operations need postural improvement and ways for doing so should be researched in the future.

中文翻译：

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杨树人工种植作业姿势风险：两种方案比较

杨树林在世界范围内广泛种植，有助于为工业提供木材。他们的管理是密集的，特别是在世界许多地方通过使用体力劳动完成的种植作业中。这种情况从人体工程学的角度提出了有关其可持续性的问题。特别是姿势风险是有问题的，因为不舒服的工作姿势可能会导致肌肉骨骼疾病。选取两种种植作业类型（大扦插—CP和裸根苗—SP）作为代表进行姿势风险评估，对14名受试者进行了评估。根据对大约 14,500 张图像（大约 67 小时的实地研究）的分析，估计 CP 和 SP 的姿势风险指数分别为 259 和 250。操作之间没有发现显着差异，但有效种植任务的高份额及其相关的姿势风险指数产生了这些相关结果。主要结论是，这类种植操作需要姿势改进，今后应研究如何改进。