Geography of Mongolia
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Mongolia is a landlocked country in Northern Asia, strategically located between China and Russia. The terrain is one of mountains and rolling plateaus, with a high degree of relief. Overall, the land slopes from the high Altay Mountains of the west and the north to plains and depressions in the east and the south. Huitenii Orgil (soc.period. sometimes called Nayramdalin Orgil--Mount Friendship) in extreme western Mongolia, where the Mongolian, the Russian, and the Chinese borders meet, is the highest point (4,374 meters). The lowest is 560 meters, an otherwise undistinguished spot in the eastern Mongolian plain. The country has an average elevation of 1,580 meters. The landscape includes one of Asia's largest freshwater lakes (Lake Khövsgöl), many salt lakes, marshes, sand dunes, rolling grasslands, alpine forests, and permanent montane glaciers. Northern and western Mongolia are seismically active zones, with frequent earthquakes and many hot springs and extinct volcanoes.
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[edit] Mountain regions
Mongolia has three major mountain ranges. The highest is the Altai Mountains, which stretch across the western and the southwestern regions of the country on a northwest-to-southeast axis. The Khangai Mountains, mountains also trending northwest to southeast, occupy much of central and north-central Mongolia. These are older, lower, and more eroded mountains, with many forests and alpine pastures. The Khentii Mountains near the Russian border to the northeast of Ulaanbaatar, are lower still. Much of eastern Mongolia is occupied by a plain, and the lowest area is a southwest-to-northeast trending depression that reaches from the Gobi Desert region in the south to the eastern frontier. The rivers drain in three directions: north to the Arctic Ocean, east to the Pacific, or into the deserts and the depressions of Inner Asia. Rivers are most extensively developed in the north, and the country's major river system is that of the Selenge, which drains into Lake Baikal. Some minor tributaries of Siberia's Yenisei River also rise in the mountains of northwestern Mongolia. Rivers in northeastern Mongolia drain into the Pacific through the Argun and Amur (Heilong Jiang) rivers, while the few streams of southern and western Mongolia do not reach the sea but run into salt lakes or deserts.
[edit] Climate
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Mongolia is high, cold, and dry. It has an extreme continental climate with long, cold winters and short summers, during which most precipitation falls. The country averages 257 cloudless days a year, and it is usually at the center of a region of high atmospheric pressure. Precipitation is highest in the north, which averages 20 to 35 centimeters per year, and lowest in the south, which receives 10 to 20 centimeters. The extreme south is the Gobi Desert, some regions of which receive no precipitation at all in most years. The name Gobi is a Mongol meaning desert, depression, salt marsh, or steppe, but which usually refers to a category of arid rangeland with insufficient vegetation to support marmots but with enough to support camels. Mongols distinguish Gobi from desert proper, although the distinction is not always apparent to outsiders unfamiliar with the Mongolian landscape. Gobi rangelands are fragile and are easily destroyed by overgrazing, which results in expansion of the true desert, a stony waste where not even Bactrian camels can survive.
Average temperatures over most of the country are below freezing from November through March and are about freezing in April and October. January and February averages of -20° C are common, with winter nights of -40° C occurring most years. Summer extremes reach as high as 38° C in the southern Gobi region and 33° C in Ulaanbaatar. Most of Mongolia is covered by discontinuous permafrost (grading to continuous at high altitudes), which makes construction, road building, and mining difficult. All rivers and freshwater lakes freeze over in the winter, and smaller streams commonly freeze to the bottom. Ulan Bator lies at 1,351 meters above sea level in the valley of the Tuul River. Located in the relatively well-watered north, it receives an annual average of 31 centimeters of precipitation, almost all of which falls in July and in August. Ulaanbaatar has an average annual temperature of -2.9°C and a frost-free period extending on the average from mid-June to late August.
Mongolia's weather is characterized by extreme variability and short-term unpredictability in the summer, and the multiyear averages conceal wide variations in precipitation, dates of frosts, and occurrences of blizzards and spring dust storms. Such weather poses severe challenges to human and livestock survival. Official statistics list less than 1 % of the country as arable, 8 to 10 % as forest, and the rest as pasture or desert. Grain, mostly wheat, is grown in the valleys of the Selenge river system in the north, but yields fluctuate widely and unpredictably as a result of the amount and the timing of rain and the dates of killing frosts. Although winters are generally cold and clear, there are occasional blizzards that do not deposit much snow but cover the grasses with enough snow and ice to make grazing impossible, killing off tens of thousands of sheep or cattle. Such losses of livestock, which are an inevitable and, in a sense, normal consequence of the climate, have made it difficult for planned increases in livestock numbers to be achieved.
[edit] Ecoregions
- Altai montane forest and forest steppe
- Khangai Mountains conifer forests
- Selenge-Orkhon forest steppe
- Sayan montane conifer forests
- Trans-Baikal conifer forests
- Daurian forest steppe
- Mongolian-Manchurian grassland
- Altai alpine meadow and tundra
- Khangai Mountains alpine meadow
- Sayan Alpine meadows and tundra
- Alashan Plateau semi-desert
- Eastern Gobi desert steppe
- Gobi Lakes Valley desert steppe
- Great Lakes Basin desert steppe
- Junggar Basin semi-desert
[edit] Environmental concerns
After many years of uncritical fostering of industrial and urban growth, Mongolia's authorities became aware in the late 1980s of the environmental costs of such policies. Belated Soviet concern over the pollution of Lake Baikal encouraged Mongolian actions to preserve their counterpart Lake Khövsgöl, which is linked to Lake Baykal through the Selenge-Moron. A wool-scouring plant that had been discharging wastes into Lake Khövsgöl was closed; truck traffic on the winter ice was banned; and the shipping of oil in barges on the lake was stopped. Deforestation in the Hangayn Nuruu, had reduced the flow of northern Mongolia's rivers, which were polluted by runoff from the fertilized and pesticide-treated grain fields along their banks, by industrial wastes, and by untreated sewage from growing settlements. Ulaanbaatar--located in a valley--with factories and 500,000 inhabitants who depend on soft coal, had severe air pollution, especially when the air was still and cold in winter. Deforestation, overgrazing of pastures, and efforts to increase grain and hay production by plowing up more virgin land had resulted in increased soil erosion, both from wind and from heavy downpours of the severe thunderstorms that bring much of Mongolia's rain. In the south, the desert area of the Gobi was expanding, threatening the fragile Gobi pasturelands. The government responded by founding the Ministry of Environmental Protection in 1987 and by giving increased publicity to environmental issues.
Natural hazards: dust storms can occur in the spring; grassland fires
Environment - current issues: limited natural fresh water resources; policies of the former communist regime promoting rapid urbanization and industrial growth have raised concerns about their negative effects on the environment; the burning of soft coal in power plants and the lack of enforcement of environmental laws have severely polluted the air in Ulaanbaatar; deforestation, overgrazing, the converting of virgin land to agricultural production have increased soil erosion from wind and rain; desertification and mining activities have also had a deleterious effect on the environment
Environment - international agreements:
party to: Biodiversity, Climate Change, Climate Change-Kyoto Protocol, Desertification, Endangered Species, Environmental Modification, Hazardous Wastes, Law of the Sea, Nuclear Test Ban, Ozone Layer Protection, Wetlands
signed, but not ratified: none of the selected agreements
[edit] Area and boundaries
Area:
total: 1.565 million km²
land: 1.565 million km²
water: 0 km²
Area - comparative: slightly smaller than Alaska
Land boundaries:
total: 8,114 km
border countries: China 4,673 km, Russia 3,441 km
Coastline: 0 km (landlocked)
Maritime claims: none (landlocked)
Elevation extremes:
lowest point: Hoh Nuur 518 m
highest point: Khuitny Orgil, Tavan Bogd Uul 4,374 m
[edit] Resources and land use
Natural resources: petroleum, coal, copper, molybdenum, tungsten, phosphates, tin, nickel, zinc, fluorspar, gold
Land use:
arable land: 1%
permanent crops: 0%
permanent pastures: 80%
forests and woodland: 9%
other: 10% (1993 est.)
Irrigated land: 800 km² (1993 est.)
[edit] See also
[edit] References
- This article contains material from the Library of Congress Country Studies, which are United States government publications in the public domain.
- This article contains material from the CIA World Factbook which, as a U.S. government publication, is in the public domain.
[edit] External links
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