Statistical data

1. Select area

2. Select year

Disturbance (Yukon)
	2021	2020	2019	2018	2017	2016	2015	2014	2013	2012	2011	2010	2009	2008	2007	2006	2005	2004	2003	2002	2001	2000	1999	1998	1997	1996	1995	1994	1993	1992	1991	1990
Insects ^{Footnote 1}
Area defoliated by insects and containing beetle-killed trees (hectares)		788	8,947	8,947	114,286	200,943	95,248	6,232	5,100	72,608	55,105	55,105	601,415	10,286	10,286	42,415	82,620	99,630	41,640	69,400	22,400	45,600	41,750	107,000	80,000	73,000	60,500	32,730	27,000	16,000	24,000
Balsam fir sawfly
Forest tent caterpillar
Gypsy moth
Jack pine budworm
Mountain pine beetle
Spruce beetle			1,196	1,196				82		263	1,311	1,311	3,972	10,286	10,286	41,175	82,620	99,630	41,640	69,400	22,400	45,600	41,750	107,000	80,000	73,000	60,500	32,730	15,000
Spruce budworm		788			369						17	17	1,155																9,000	6,000	12,000
Western spruce budworm
Other insects			7,751	7,751	113,917	200,943	95,248	6,150	5,100	72,345	53,777	53,777	596,288			1,240													3,000	10,000	12,000
Fires ^{Footnote 2}
Area burned (hectares)	118,126	3,464	256,067	80,586	399,280	21,537	169,843	3,161	198,314	58,281	40,464	146,963	230,512	13,068	38,358	95,033	187,438	1,719,664	48,785	36,204	17,335	8,016	194,817	343,731	11,470	91,067	261,882	421,710	115,104	37,815	120,271	182,892
Number of fires	112	24	118	51	115	53	186	34	177	127	56	89	118	76	111	80	83	282	77	70	68	55	159	198	112	149	148	255	136	116	187	154

Footnotes

Footnote 1

Insects

Source: National Forestry Database. Forest insects – Forest insects, Table 4 Area of moderate to severe defoliation (including beetle-killed trees) by insects. (accessed June 21, 2022).

Notes:

Forest area disturbed by defoliators (e.g., budworms, Lymantria dispar) includes only areas with tree mortality or moderate to severe defoliation. Defoliation does not always result in mortality. Several factors, including defoliation severity, duration, and frequency, or presence of other stressors (e.g., drought), can affect the level of mortality.
Forest area disturbed by bark beetles (e.g., mountain pine beetle, spruce beetle) is derived from aerial surveys that map trees that are dead or dying from successful beetle attack.
Summing the areas affected by more than one insect to create a grand total can result in an overestimate if more than one insect species occurs in the same stand in the same year. For example, in a mixedwood forest, spruce budworm may defoliate balsam fir in the same stand where forest tent caterpillar is defoliating the aspen trees.

Footnote 2

Fires

Sources:

National Forestry Database. Forest fires, Table 3.1.1, Number of fires by cause class. (accessed June 21, 2022).
National Forestry Database. Forest fires, Table 3.2.1, Area burned by cause class. (accessed June 21, 2022).

Note:

The National Forestry Database sources the latest year’s fire data from the Canadian Interagency Forest Fire Centre and all years prior from the Canadian Wildland Fire Information System.