Table 1.

Current and projected expansions of GDD₅ ≥ 1200 areas in the boreal regions of selected countries.

Country	Total land area	Boreal region			Current and projected distribution of the GDD5 ≥ 1200 area across the boreal region
					Current		2050–2054		2065–2069		2080–2084		2095–2099		2005–2099
		Boreal areaa	% Boreal		Areab	% of boreal	Area	% of boreal (mean [min-max])	Area	% of boreal (mean [min-max])	Area	% of boreal (mean [min-max])	Area	% of boreal (mean [min-max])	Total area gain	% increase above current (mean [min-max])
			of Global	of country
Russian Federation	16.88	11.53	54.6	68.3	3.94	34.2	7.05	61 [44–70]	7.97	69 [48–78]	8.74	76 [54–86]	9.06	79 [56–87]	5.12	129 [65–155]
Canada	9.96	6.53	30.4	38.7	1.72	26.3	3.62	55 [43–67]	4.07	62 [48–80]	4.50	69 [50–88]	4.79	73 [52–93]	3.07	178 [97–255]
United States	9.47	1.24	5.8	7.4	0.32	26	0.45	36 [31–44]	0.63	51 [34–65]	0.74	59 [36–73]	0.90	72 [44–85]	0.57	177 [68–226]
Mongolia	1.56	0.56	2.6	3.3	0.18	32.9	0.30	53 [40–62]	0.34	60 [42–73]	0.39	70 [50–85]	0.41	734 [50–90]	0.23	125 [51–172]
China	9.41	0.49	2.3	2.9	0.35	71.8	0.47	96 [88–97]	0.47	97 [93–98]	0.48	98 [96–99]	0.48	99 [96–100]	0.13	37 [34–39]
Finland	0.34	0.33	1.5	1.9	0.17	51.2	0.27	83 [70–94]	0.28	86 [72–97]	0.31	94 [79–98]	0.31	95 [80–99]	0.14	84 [55–92]
Sweden	0.45	0.31	1.4	1.8	0.03	8.2	0.13	41 [19–64]	0.16	50 [20–77]	0.20	63 [40–88]	0.20	64 [39–92]	0.17	687 [374–1027]
Norway	0.33	0.28	1.3	1.7	0.03	9.7	0.06	20 [12–31]	0.08	27 [14–52]	0.10	36 [18–71]	0.12	41 [20–78]	0.09	326 [107–704]
Kazakhstan	2.72	0.12	0.6	0.7	0.10	82.8	0.12	92 [88–95]	0.12	96 [92–98]	0.12	97 [93–98]	0.12	98 [95–99]	0.02	18 [15–20]
Kyrgyzstan	0.20	0.02	0.1	0.1	0.01	38.1	0.02	91 [63–98]	0.02	96 [74–100]	0.02	100 [90–100]	0.02	100 [90–100]	0.01	162 [138–163]
Globalc	—	21.51	100	—	6.85	32	12.47	58 [43–68]	14.14	66 [48–78]	15.57	73 [55–89]	16.40	76 [55–89]	9.55	140 [72–180]

^a,bAreas in units of 10⁶ km².

^cSmall areas of the boreal regions in other regions are sufficiently small to be masked within the rounding error.