Fig 1.
(a) Province boundary of BC and Quesnel TSA (b) Location of study site in Quesnel TSA (c) Stand boundaries of study site. Red arrows in Fig 1 (c) show the spread direction of the wildfire in 2017. Stand type: A: treated-burnt; B: untreated-burnt; C: treated-unburnt; D: untreated-unburnt.
Table 1.
Stand attributes before the fire event, derived from 2016 BC vegetation resources inventory data [58].
Fig 2.
Aerial photo of the irregular shelterwood stand.
Bottom-left corner shows part of the treated-burnt stand with retentions and openings. Bottom right shows treated-unburnt stand in the same way. Top right shows a recently harvested irregular shelterwood stand to give readers a better idea of what this system looks like. Top left shows a small patch of unburnt stand.
Table 2.
Summary table of main sampling steps.
Fig 3.
Definition of char height and flame height.
Fig 4.
Live tree density in treated-unburnt-retention vs untreated unburnt stand.
Table 3.
Summary statistics of the four study stands.
Fig 5.
Ground fuel loadings by fuel size class (hr) in treated-unburnt stand vs untreated-unburnt stand.
Fig 6.
Total counts of char height in treated-burnt stand vs treated-unburnt stand by each height class.
Fig 7.
Bubble map showing the result of post-fire live tree tally in each retention patch along the three main skidding trails.
Fire spread from the northwest corner to the southeast corner. Red dot on top left showing ignition spot.
Fig 8.
The distribution of ‘number of live trees’ over ‘distance from ignition’, with the fitted regression line using negative binomial model.
Fig 9.
Bubble map showing the result of post-fire char height tally every 3rd retention patch along the three main skidding trails.
Fire spread from the northwest corner to the southeast corner. Red dot on top left showing ignition spot.