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. 2018 Dec 21;9:5423. doi: 10.1038/s41467-018-07663-3

Table 1.

Regional lake area and lake change statistics per study site

Unit Overall Permafrost extent Ice content
C D S I High Medium Low
T1 Net km2 −1759.50 −556.19 −390.11 −155.99 −300.98 −636.69 −347.67 −418.89
% −5.46 −4.29 −7.89 −1.94 −13.58 −3.67 −5.35 −9.70
Growth km2 509.93 220.93 58.24 87.86 114.55 324.59 108.00 48.99
% 1.58 1.70 1.18 1.09 5.17 1.87 1.66 1.13
Loss km2 2269.42 777.12 448.35 243.84 415.52 961.28 455.67 467.88
% 7.04 5.99 9.07 3.04 3.04 5.54 7.01 10.84
n Lakes # 218,882 97,723 45,070 57,144 10,049 117,572 55,021 37,393
Lake area (2014) km2 30,456.53 12,422.21 4551.18 7869.90 1915.71 16,706.28 6154.88 3897.84
% 6.10 8.38 4.29 9.73 2.55 7.99 6.28 3.77
T2 Net km2 313.81 320.08 −0.02 0.00 0.00 32.00 97.82 190.65
% 3.67 3.81 −3.12 0.00 0.00 0.55 8.30 13.99
Growth km2 663.76 657.23 0.02 0.00 0.00 248.28 147.56 262.11
% 7.77 7.83 3.16 0.00 0.00 4.24 12.52 19.24
Loss km2 349.96 337.14 0.04 0.00 0.00 216.28 49.74 71.46
% 4.10 4.02 6.28 0.00 0.00 3.69 4.22 5.25
n Lakes # 69,151 67,156 19 0 0 44,058 10,670 12,579
Lake area (2014) km2 8856.45 8714.04 0.54 0.00 0.00 5890.20 1276.44 1553.08
% 1.60 1.61 0.01 0.00 0.00 2.87 1.41 0.61
T3 Net km2 −161.45 −55.61 −109.08 3.20 0.00 −123.32 43.21 −81.38
% −0.62 −0.24 −5.96 0.28 0.00 −1.12 0.34 −3.53
Growth km2 862.19 736.96 99.40 20.92 0.00 105.48 672.12 79.68
% 3.31 3.21 5.43 1.83 0.00 0.96 5.34 3.45
Loss km2 1023.64 792.57 208.48 17.72 0.00 228.81 628.91 161.06
% 3.94 3.45 11.39 1.55 0.00 2.07 5.00 6.98
n Lakes # 158,453 133,813 20,219 3358 0 51,279 94,101 12,010
Lake area (2014) km2 25,851.69 22,910.72 1721.51 1147.63 0.00 10,920.92 12,632.36 2226.58
% 2.88 4.36 0.54 2.30 0.00 11.07 2.44 0.80
T4 Net km2 −129.77 −438.72 −82.18 −52.62 447.60 −2.91 −0.27 −122.74
% −0.24 −2.02 −1.50 −1.07 2.15 −1.32 −1.55 −0.23
Growth km2 994.59 167.69 26.43 22.51 774.63 2.02 0.18 989.06
% 1.87 0.77 0.48 0.46 3.71 0.91 1.03 1.87
Loss km2 1124.36 606.41 108.61 75.13 327.03 4.93 0.46 1111.80
% 2.12 2.79 1.99 1.53 1.53 2.23 2.59 2.11
n Lakes # 196,818 97,742 22,311 19,470 55,226 1506 249 192,994
Lake area (2014) km2 53,016.88 21,322.34 5381.98 4858.19 21,311.32 218.50 17.39 52,637.93
% 13.44 15.46 17.52 15.02 11.10 4.34 4.48 13.58

Regional lake area (end of observation period in 2014) and lake change statistics per transect as net change, gross lake area growth and gross lake area loss, subdivided by permafrost extent, and ice content. Differences of summed up values to overall area are due to regions of permafrost absence and minor spatial dataset inconsistencies

C: continuous permafrost, D: discontinuous permafrost, S: sporadic permafrost, I: isolated permafrost