Justin Epting's research while affiliated with University of Alaska Fairbanks and other places
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Publications (4)
Wildland fire is the dominant large-scale disturbance mechanism in the Alaskan boreal forest, and it strongly influences forest structure and function. In this research, patterns of burn severity in the Alaskan boreal forest are charac-terised using 24 fires. First, the relationship between burn severity and area burned is quantified using a linear...
We evaluated 13 remotely sensed indices across four wildfire burn sites in interior Alaska. The indices included single bands, band ratios, vegetation indices, and multivariate components. Each index was evaluated with post-burn and differenced pre/post-burn index values. The indices were evaluated by examining the correlation between each remotely...
Landsat imagery was used to study the relationship between a remotely sensed burn severity index and prefire vegetation and the postfire vegetation response related to burn severity within a 1986 burn in interior Alaska. Vegetation was classified prior to the fire and 16 years after the fire, and a chronosequence of remotely sensed vegeta- tion ind...
Citations
... The sensitivity of these methods varies across different vegetation types [20,21] so they need to be field validated to ensure that reliable information is generated. The validation should compare the spectral index to the equivalent surface process or property [1]. ...
... Fire severity mapping is crucial for the forest departments to set up mitigation measures and to restore the affected areas after the fire season [40] [53]. The severity of a fire is one of the factors controlling post-fire vegetation recovery and species composition [33]. In wildfire research, the terms burn severity and fire severity are often used interchangeably. ...
... This result was expected from the linkage between large wildfire growth and extreme fire behavior as determined by fuel, topography and fire weather controls (Lutz et al., 2009;Fernandes et al., 2016b), which is also conducive to high fire severity likelihood (Dillon et al., 2011;Lutz et al., 2011;Harvey et al., 2016) and spatial aggregation of severely burned areas (Cansler and McKenzie, 2014). In this sense, large wildfires are usually associated to extensive patches burned at high severity , not observed in small wildfires (Duffy et al., 2007). Indeed, the relationship between fire size and %high severity was mediated by fire behavior drivers that involved different direct and indirect pathways to both attributes, as we will discuss later. ...
![[object Object]](https://i1.rgstatic.net/ii/profile.image/277609540800521-1443198680796_Q64/T-Rupp.jpg)
... The burn severity classes such as low, moderate, and high severity vary depending on the climatic and ecological factors, geology, and morphology (Cocke et al. 2005;Epting et al. 2005; Key and Benson 2006;Hall et al. 2008;Holden et al. 2010;Soverel et al. 2011). Thus, a single set of threshold values that distinguishes the burn severity classes cannot allow for comparison among different regions (Chafer 2008;Tran et al. 2018). ...
