permanent crops: 0%
permanent pastures: 3%
forests and woodland: 54%
other: 38% (1993 est.)
Irrigated land: 7,100 sq km (1993 est.)
Natural hazards: continuous permafrost in north is a serious obstacle to development; cyclonic storms form east of the Rocky Mountains, a result of the mixing of air masses from the Arctic, Pacific, and North American interior, and produce most of the country's rain and snow
Environment - current issues: air pollution and resulting acid rain severely affecting lakes and damaging forests; metal smelting, coal-burning utilities, and vehicle emissions impacting on agricultural and forest productivity; ocean waters becoming contaminated due to agricultural, industrial, mining, and forestry activities
Environment - international agreements: party to: Air Pollution,
Air Pollution-Nitrogen Oxides, Air Pollution-Persistent Organic
Pollutants, Air Pollution-Sulphur 85, Air Pollution-Sulphur 94,
Antarctic-Marine Living Resources, Antarctic Seals, Antarctic
Treaty, Biodiversity, Climate Change, Desertification, Endangered
Species, Environmental Modification, Hazardous Wastes, Marine
Dumping, Nuclear Test Ban, Ozone Layer Protection, Ship Pollution,
Tropical Timber 83, Tropical Timber 94, Wetlands
signed, but not ratified: Air Pollution-Volatile Organic Compounds, Antarctic-Environmental Protocol, Climate Change-Kyoto Protocol, Law of the Sea, Marine Life Conservation
Geography - note: second-largest country in world (after Russia); strategic location between Russia and US via north polar route; approximately 85% of the population is concentrated within 300 km of the US/Canada border