Figure 2.

The total area of high-and low-confidence tree harvest events occurring within $10\mathrm{km}$ of the eastern human settlement area of Vancouver Island (in gray bars) compared with the number of confirmed (solid black line, $n=146$) and combined probable and confirmed human cases (dashed black line, $n=241$) with residences on Vancouver Island. Human cases regardless of travel history are shown. Tree harvests were assigned high or low confidence through a random forest classifier, based on how many votes from individual trees were received for each class type (e.g., tree harvest, fire). The proportion of votes of the second-most voted class (v2) was divided by the proportion of votes of the assigned class (v1). Tree harvests were considered high confidence if v2/v1 was $\le 0.4$ and low confidence if v2/v1 was $>0.4$. Tree harvest data were provided by Hermosilla et al.¹⁰ (see https://opendata.nfis.org/mapserver/nfis-change_eng.html). Human settlement area data were mapped using the 2015 raster data set from the European Commission Global Human Settlement–Settlement Model (SMOD) at a $1\text{-km}$ resolution (https://ghsl.jrc.ec.europa.eu/datasets.php). Data for annual tree harvest areas is in Table S4 in the “$10\mathrm{km}$” column. Data for annual human cases is in Table 1.