Silvics of North America (SNA) is a widely used silvicultural manual. However, the last SNA was published in 1990. Therefore, 2,589 registered foresters were surveyed across four US states to answer two broad questions: (1) Should SNA be updated? And (2) would an updated SNA still be a useful tool for forest management? Most respondents indicated that the type and extent of content contained in the previous version of SNA was still desirable today. Aside from updating all sections with recent research findings, expansion was suggested for ecosystem services provided by species. An update to maps provided in SNA, through changes to natural ranges of tree species and other aesthetic improvement, was suggested by most survey respondents. These findings support the conclusion that the SNA would still be an essential source of information if 21st-century issues such as climate change impacts and adaptation measures were included in the update.

中文翻译：

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修订北美 Silvics 的林务员偏好：四个州的注册林务员调查

北美森林手册 (SNA) 是一本广泛使用的造林手册。然而，上一个 SNA 是在 1990 年发布的。因此，对美国四个州的 2,589 名注册林务员进行了调查，以回答两个广泛的问题：(1) SNA 是否应该更新？(2) 更新后的 SNA 是否仍然是森林管理的有用工具？大多数受访者表示，旧版 SNA 中包含的内容类型和范围在今天仍然是可取的。除了用最近的研究结果更新所有部分外，还建议扩大物种提供的生态系统服务。大多数受访者建议通过改变树种的自然范围和其他美学改进来更新 SNA 中提供的地图。