<p>The coniferous forests of the Western Cordillera are particularly affected by recent increases in wildfire extent and severity. After fire, conifer establishment and growth rates are influenced by a wide range of ecological drivers. Understanding the relative influence of ecological drivers on conifer recovery is crucial when modeling landscape dynamics. Past research has examined a wide variety of ecological drivers; however, syntheses of these drivers are rare. This systematic review focuses on forest recovery pathways, which have distinct variability in spatial and temporal measures of conifer establishment and growth. From studies examined, we extracted whether the study identified a recovery pathway and whether field or satellite spectral methods were used. Spectral methods were the most common method to determine the 84 extracted pathways. Among pathways identified, conifer self-replacement was the most common, but the second most common was state change, wherein the forest transitions in landcover type. We also investigated how recovery varied relative to different ecological drivers. Among the &gt; 1000 drivers considered, pre-fire composition and post-fire moisture had consistent positive associations with all recovery metrics, while the association with other drivers varied by metric (stem density versus composition) and/or method (field versus spectral). Our review outlines key gaps for future research, including (1) the accuracy of spectral monitoring to capture structural growth trends, such as stem densities over time, and (2) how the effects of ecological drivers vary across scales, such as post-fire shrub cover at local versus landscape levels. Overall, fusing spectral and field data across spatiotemporal scales improves our understanding of post-wildfire recovery and dynamics, as well as our ability to anticipate the impacts of changing climate and wildfire conditions on recovering forests.</p>

错误:搜索内容不能为空,请输入英文关键词
错误:关键词超出字数限制,请精简
高级检索

Synthesizing Spectral and Field Observations of Post-fire Conifer Recovery in Dry Conifer Forests

  • Sarah M. Smith-Tripp,
  • Nicholas C. Coops,
  • Joe Meyer,
  • Joanne C. White,
  • Sarah Gergel,
  • Jodi Axelson,
  • Dominik Roeser

摘要

The coniferous forests of the Western Cordillera are particularly affected by recent increases in wildfire extent and severity. After fire, conifer establishment and growth rates are influenced by a wide range of ecological drivers. Understanding the relative influence of ecological drivers on conifer recovery is crucial when modeling landscape dynamics. Past research has examined a wide variety of ecological drivers; however, syntheses of these drivers are rare. This systematic review focuses on forest recovery pathways, which have distinct variability in spatial and temporal measures of conifer establishment and growth. From studies examined, we extracted whether the study identified a recovery pathway and whether field or satellite spectral methods were used. Spectral methods were the most common method to determine the 84 extracted pathways. Among pathways identified, conifer self-replacement was the most common, but the second most common was state change, wherein the forest transitions in landcover type. We also investigated how recovery varied relative to different ecological drivers. Among the > 1000 drivers considered, pre-fire composition and post-fire moisture had consistent positive associations with all recovery metrics, while the association with other drivers varied by metric (stem density versus composition) and/or method (field versus spectral). Our review outlines key gaps for future research, including (1) the accuracy of spectral monitoring to capture structural growth trends, such as stem densities over time, and (2) how the effects of ecological drivers vary across scales, such as post-fire shrub cover at local versus landscape levels. Overall, fusing spectral and field data across spatiotemporal scales improves our understanding of post-wildfire recovery and dynamics, as well as our ability to anticipate the impacts of changing climate and wildfire conditions on recovering forests.