150°0'0"W 144°0'0"W 138°0'0"W 132°0'0"W 126°0'0"W 120°0'0"W 114°0'0"W 108°0'0"W 102°0'0"W 96°0'0"W 90°0'0"W Map Elements EOSD Classes NWT Land Areas Shadow Town [_ Water NWT Including Arctic Islands: land/water = 135Mha; land only = 114Mha NWT Mainland: land/water = 114Mha; land only = 94Mha All-Weather Road Non-Vegetated Land NWT Mainland Below Treeline = land/water = 97Mha; land only = 80Mha Winter Road Snow/Ice Treeline Rock/Rubble Exposed Land National Park WHAT IS TREELINE? Bryoids 75°0'0"N The limit beyond which trees cannot grow, often determined Shrub - Tall by altitude in mountainous areas or high latitude in the Shrub - Low subarctic. Permafrost in the soil can prevent trees from Wetland - Treed growing their roots deep enough for the necessary structural Wetland - Shrub 75°0'0"N support and cold temperatures can result in internal freezing Wetland - Herb of the trees, killing them. The treeline is not a distinct line Herb because unique micro-sites, such as gullies and south facing Coniferous - Dense slopes, offer conditions on which trees can establish and grow Coniferous - Open beyond the normal northern limit. Coniferous - Sparse Broadleaf - Dense WHAT IS FOREST? Broadleaf - Open Broadleaf - Sparse Forests are complex ecosystems comprised of many Mixed Wood - Dense land cover types including trees, shrubs and wetlands. Mixed Wood - Open 72°0'0"N Forested land cover is defined as having > 10% tree crown closure. Mixed Wood - Sparse EOSD Code Description Area (Mha) % Total Area 72°0'0"N % of 97.32Mha Sachs Harbour No Data 0.00 0.00 [_ Cloud 2.24 2.30 Shadow 0.82 0.84 Water 17.05 17.52 Snow/Ice 1.53 1.57 Rock/Rubble 2.22 2.28 Beaufort Sea Ulukhaktok Exposed/Barren Land 7.49 7.69 [_ Bryoids 4.08 4.19 Tuktoyaktuk [_ Shrub Tall 1.54 1.59 69°0'0"N Shrub Low 12.80 13.16 Wetland ‐ Treed 3.91 4.02 Paulatuk Wetland ‐ Shrub 3.46 3.56 Aklavik Inuvik 69°0'0"N [_ Wetland ‐ Herb 2.88 2.96 [_ [_ Herbs 1.53 1.57 Coniferous ‐ Dense 4.88 5.01 Tsiigehtchic Coniferous ‐ Open 16.20 16.64 [_Fort[_ McPherson Coniferous ‐ Sparse 8.22 8.44 Broadleaf ‐ Dense 1.15 1.18 Broadleaf ‐ Open 1.55 1.59 Broadleaf ‐ Sparse 0.49 0.51 Colville Lake Mixedwood ‐ Dense 0.70 0.72 [_ Mixedwood ‐ Open 2.37 2.44 Fort Good Hope 66°0'0"N Mixedwood ‐ Sparse 0.21 0.21 [_ 97.32 * These #'s 66°0'0"N Summary Statistics Area (Mha) represent Great land cover Norman Wells Bear Lake Non‐Vegetated 31.36 types Vegetated Non‐Forested 26.29 below treeline [_ Deline Tulita [_ Vegetated Forested 39.67 [_ M a c k e n z i e Wekweeti Gameti R i v e [_ r [_ 63°0'0"N Wrigley [_ Whati 63°0'0"N [_ Behchoko [_ Yellowknife[_ Detah [_Lutselk'e Fort Simpson [_ [_ Jean Marie River Fort Providence Nahanni Butte[_ ¡ [_ Great Fort Resolution ¸ 1:8,400,000 [_ Kakisa Slave Lake KM Hay River[_ Trout Lake [_ 60°0'0"N 0 110 220 330 Fort Liard [_Enterprise FMD Forest Resources, ENR-GNWT, Sept.2011 [_ [_ Hay River Reserve Lambert Conformal Conic, NAD83 [_ 60°0'0"N Data Sources: NWT PAS, GNWT, NRCan Fort Smith * Magnetic declination calculated for Yellowknife, NT ** EOSD = Earth Observation for Sustainable Development [_ http://cfs.nrcan.gc.ca/subsite/eosd 126°0'0"W 120°0'0"W 114°0'0"W 108°0'0"W.