Fire suppression and the loss of western white pine (WWP) have made northern Rocky Mountain moist mixed-conifer forests less disturbance resilient. Although managers are installing hundreds of plantations, most of these plantations have not experienced wildfire since establishment. In 2015, wildfires burned through 100 WWP plantations in this region, providing an opportunity to evaluate the effects of wildfires on sapling survival. A Weibull distribution approach was used to characterize the variation of fire severity pixels, as indicated by the differenced normalized burn ratio. The distribution parameters provided a method to identify the biophysical setting and plantation characteristics influencing fire severity and sapling survival. Plantations located on lower slope positions were more resistant to wildfires than plantations located midslope or close to the ridges. Snow water equivalent was positively correlated with wildfire resistance and resilience. Results will help focus reforestation efforts and identify locations where future plantations can potentially survive wildfires.

中文翻译：

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2015 年落基山北部潮湿混合针叶林野火期间影响人工林生存的生物物理环境

火灾的抑制和西部白松 (WWP) 的丧失使得落基山北部潮湿的混交针叶林的抗干扰能力降低。尽管管理人员正在安装数百个种植园，但这些种植园中的大多数自建立以来都没有经历过野火。2015 年，野火烧毁了该地区 100 个 WWP 种植园，为评估野火对树苗生存的影响提供了机会。Weibull 分布方法用于表征火灾严重性像素的变化，如差异归一化燃烧比所示。分布参数提供了一种方法来识别影响火灾严重程度和树苗存活的生物物理环境和种植园特征。位于低坡位置的种植园比位于中坡或靠近山脊的种植园更能抵抗野火。雪水当量与野火抵抗力和恢复力呈正相关。结果将有助于集中重新造林工作并确定未来种植园可能在野火中幸存的位置。