Altai steppe and semi-desert

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Altai steppe and semi-desert
Akzhar, District Of Tarbagatay - Gates Of Village.jpg
Akzhar, District Of Tarbagatay - Gates Of Village
Ecoregion PA0802.png
Ecoregion territory (in purple)
Ecology
Realm Palearctic
Biome Temperate grasslands, savannas, and shrublands
Geography
Area82,880 km2 (32,000 sq mi)
Countries
Coordinates 48°50′N82°0′E / 48.833°N 82.000°E / 48.833; 82.000

The Altai steppe and semi-desert ecoregion (WWF ID: PA0802), as its name indicates, sits in a transition zine between steppe and semi-desert, supporting sparse grass and shrublands. The area is relatively undeveloped, with agriculture mostly represented by grazing livestock. There are a few shallow lakes in depressions used by migratory birds. [1] [2] [3]

Contents

Location and description

The ecoregion is situated between steppe on its south (the Emin Valley steppe ecoregion) and conifer forests to its north (the Altai montane forest and forest steppe ecoregion). To the west is the Kazakh semi-desert ecoregion and to the east is the Junggar Basin semi-desert and Lake Zaysan. The Irtysh River runs along the northeast of the ecoregion, and the Tarbagatay Mountains along the south. [2] A small portion of the ecoregion reaches into China.

Climate

The climate of the ecoregion is Humid continental climate, warm summer (Köppen climate classification (Dfb)). This climate is characterized by large seasonal temperature differentials and a warm summer (at least four months averaging over 10 °C (50 °F), but no month averaging over 22 °C (72 °F). [4] [5]

Flora and fauna

The ground cover is grassland, shrubs, and bare rock. Use of the land for livestock range is putting pressure on wildlife. The Manrak ridge in the southeast of the region is an important area for birds, with 121 species identified. [6]

See also

Related Research Articles

<span class="mw-page-title-main">Katun Nature Reserve</span> Strict nature reserve in the Altai Republic, Russia

Katun Nature Reserve is a Russian zapovednik located in the highlands of the central Altai Mountains of south Siberia. The Katun River runs down through a valley in the reserve, serving as the primary source of the Ob River. The headwaters of the Katun River originate on Mount Belukha, the highest mountain in Siberia at 4,506 metres (14,783 ft), which is located on the far eastern edge of the preserve. Katun is an internationally important center of biodiversity, forming part of the "Golden Mountains of Altai" UNESCO World Heritage Site. Katun Nature Reserve is situated in the Ust-Koksinsky District of Altai Republic.

<span class="mw-page-title-main">Tigireksky Nature Reserve</span> Strict nature reserve in Altai Krai, Russia

Tigirekskiy Nature Reserve is a Russian 'zapovednik' in the northwest mid-level mountains of the Altai-Sayan region. The reserve was established for the protection and study of the relic pre-glacial dark taiga of the higher elevations, and the mountain-steppe of the river valleys and lower regions. The site features extensive karst landscape and caves. The reserve is situated in the Zmeinogorsky, Tretyakovsky and Krasnoshchyokovsky districts of Altai Krai. It was formally established in 1999, and covers a total area of 40,693 ha (157.12 sq mi).

<span class="mw-page-title-main">Katon-Karagay National Park</span>

Katon-Karagay National Park is the largest national park in Kazakhstan, located on the eastern edge of the country, in the Southern Altai Mountains. The park fills the west side of the "X" where the borders of Kazakhstan, Russia, China, and Mongolia meet. The highest peak in Siberia, is on the Russian border in the Katun Range. The park is in Katonkaragay District of East Kazakhstan Region, 1,000 kilometres (620 mi) southeast of the capital city of Astana.

<span class="mw-page-title-main">Altai montane forest and forest steppe</span> Ecoregion in the Altai Mountains

The Altai montane forest and forest steppe ecoregion covers patches of the subalpine forest belt on the Altai Mountains, crossing the border region where Russia, Kazakhstan, Mongolia and China meet. The region has high biodiversity, as it is located in transition zones between different ecoregions, altitudes, and climate zones. It is in the Palearctic realm, with a Cold semi-arid climate. It covers 35,199,998 km2 (13,590,795 sq mi).

<span class="mw-page-title-main">Kazakh forest steppe</span>

The Kazakh forest steppe ecoregion is a long thin strip of transition zone between the forested taiga of Siberian Russia, and the Kazakh steppe to the south. The ecoregion stretches over 2,000 km from the southern Ural mountains in the west to the foothills of Altai mountains in the east, yet averages only 200 km from south to north across its length. Because the region is farther inland than European forest steppe, and some 300 to 500 km farther north, the climate is more continental and with less precipitation the tree cover more sparse. The ecoregion is in the Temperate grasslands, savannas, and shrublands biome, and the Palearctic realm, with a Humid Continental climate. It covers 420,614 km2 (162,400 sq mi).

<span class="mw-page-title-main">Tian Shan montane conifer forests</span> Ecoregion in the Tian Shan Mountains

The Tian Shan montane conifer forests ecoregion covers the "forest belt" of the Tian Shan mountains - generally the north-facing slopes that get enough moisture, and are warm enough, for trees to grow. This conifer belt is found mostly between 1,500 and 2,700 meters.

<span class="mw-page-title-main">Tian Shan foothill arid steppe</span> Ecoregion in the Tian Shan Mountains

The Tian Shan foothill arid steppe ecoregion covers the northern and western approaches to the Tian Shan mountains, centered on Lake Issyk-Kul in Kyrgyzstan. This region receives more moisture from Central Asia, thereby supporting more vegetation and diversity of plant and animal species than the deserts to the south.

<span class="mw-page-title-main">Central Tibetan Plateau alpine steppe</span> Ecoregion in the Tibetan Plateau

The Central Tibetan Plateau alpine steppe ecoregion covers the high alpine plateau that stretches over 1,600 kilometres (1,000 mi) across the Tibetan Plateau to Qinghai Lake in China. Because of the high altitude—much it over 5,000 metres (16,000 ft)—the region is a cold, arid desert that is only 20% covered with steppe and meadow vegetation. The area has been relatively free from human development due to the hostile climate and unsuitability for agriculture. The ecosystem is relatively intact, and supports herds of wild antelope, sheep, deer, and gazelles.

<span class="mw-page-title-main">Alashan Plateau semi-desert</span> Ecoregion in the Gobi Desert

The Alashan Plateau semi-desert ecoregion covers the southwestern portion of the Gobi Desert where precipitation in the mountains is sufficient for a short part of the summer to support sparse plant life. The terrain is basin and range, with elevations from 1,000 to 2,500 metres. The region straddles the China–Mongolian border, with the Tibetan Plateau to the south, and the more arid regions of the Gobi to the north and east.

<span class="mw-page-title-main">Yarlung Tsangpo arid steppe</span> Ecoregion in the Tibetan Plateau

The Yarlung Tsangpo arid steppe ecoregion covers the river valley of the Yarlung Tsangpo River on the southern edge of Tibet. The river runs parallel to the northern borders of Nepal, Bhutan and India, between the Himalayas to the south and the Tibet Plateau to the north. The river valleys are the most populated areas of Tibet, putting pressure on wildlife. The area ranges from cold desert in the west to steppe shrub land in the east; the few trees are in the lowest river valleys to the east.

<span class="mw-page-title-main">Khangai Mountains alpine meadow</span> National park in Mongolia

The Khangai Mountains alpine meadows ecoregion runs along the central ridge of the Khangai Mountains in central Mongolia. The slopes to the north are conifer forests, the lowlands to the south are semi-arid steppe. The Khangai are an "island" mountain range surrounded by lower forest steppe and semi-arid regions of central Mongolia. Most of the region is now protected by Tarvagatai Nuruu National Park and Khangai Nuruu National Park.

<span class="mw-page-title-main">Gobi Lakes Valley desert steppe</span> Ecoregion in Mongolia

The Gobi Lakes Valley desert steppe ecoregion covers the narrow, flat valley in southwestern Mongolia that lies between the Khangai Mountains, and the Gobi-Altai Mountains. The region is known as the "Valley of the Lakes" because runoff from the mountains collect in lakes that have no outlet to the sea. Although the valley is a semi-arid desert steppe, it has areas of wetlands near the lakes that are important habit for water birds.

<span class="mw-page-title-main">Khorgo-Terkhiin Tsagaan Nuur National Park</span> National park in Mongolia

Khorgo-Terkhiin Tsagaan Nuur National Park covers the picturesque Terkhiin Tsagaan Lake and the nearby Khorgo Mountain in the north central Khangai Mountains of Mongolia. The marshes along the west end of the lake are an important breeding and staging area for birds. The park is located in Tariat District of Arkhangai Province.

<span class="mw-page-title-main">Onon-Balj National Park</span> National Park of Mongolia

Onon-Balj National Park covers two sectors of the Onon River valley as it flows north from Mongolia into Russia. The region is in the transition zone between the Siberian conifer forests of the north and the Daurian steppe and forest steppe of Mongolia. The area is one of relatively high biodiversity, and is also historically and culturally important for its association with Genghis Khan. The park is located in the far northeast of Khentii Province, 280 km northeast of Ulaanbaatar.

<span class="mw-page-title-main">Har Us Nuur National Park</span> National park in Khovd Province, Mongolia

Har Us Nuur National Park is a national park in Khovd Province, Mongolia. It covers a chain of three large lakes in the Great Lakes Basin of western Mongolia. The lakes, Khar-Us Nuur, Khar Lake and Dörgön Lake are bordered by marshes and reed-beds that are an important breeding sport for birds, over 200 species of which have been identified in the park. Mount Jargalant is on the southern shore of Khar-Us. This park is distinct from Khyargas Nuur National Park, another large lake in the region, but 60 km to the north.

<span class="mw-page-title-main">Central Asian riparian woodlands</span>

The Central Asian riparian woodlands ecoregion is spread out across the deserts and plains of central Asia between the Aral Sea and the mountains 2,000 kilometres (1,200 mi) to the east. The long narrow components of the ecoregion follow the large rivers fed by snowmelt, and provide critical habitat for migratory birds as they travel through the arid region. The vegetation is referred to as tugai, characterized by low tangles of trees and brush along the edges of the rivers and associated wetlands, and fed by groundwater instead of precipitation.

<span class="mw-page-title-main">Kopet Dag semi-desert</span> Ecoregion in Turkmenistan and Iran

The Kopet Dag semi-desert ecoregion is a small ecoregion that crosses the border of southwestern Turkmenistan into northeastern Iran. It covers a transition zone between the deserts to the north and west, and the foothill steppes and woodlands in the higher Kopet Dag mountains to the east and the Alborz Mountains to the south. The terrain is mostly barren semi-desert and widespread 'takir', a type of seasonal salt flat or dried clay deposit in an interdune depression.

<span class="mw-page-title-main">Kopet Dag woodlands and forest steppe</span>

The Kopet Dag woodlands and forest steppe ecoregion coincides with the Kopet Dag mountains, straddling the southern border of Turkmenistan and the northeastern border of Iran. The region is one of high biodiversity, as it includes a full range of altitude zones, and variety of habitats included juniper-wooded slopes, montane grasslands, and tugay.

<span class="mw-page-title-main">Middle East steppe</span> Ecoregion of Jordan, Syria and Iraq

The Middle East steppe ecoregion stretches in an arc from southern Jordan across Syria and Iraq to the western border of Iran. The upper plains of the Tigris and Euphrates Rivers dominate most of the ecoregion. The terrain is mostly open shrub steppe. The climate is arid. Evidence is that this region was once more of a forest-steppe, but centuries of overgrazing and gathering firewood have reduced tree and grass cover to small areas and along the riverine corridors. Despite the degraded condition of the steppe environment, the ecoregion is important for water birds as the rivers and reservoirs provide habitat in the arid region.

<span class="mw-page-title-main">Baluchistan xeric woodlands</span> Ecoregion in Pakistan and Afghanistan

The Baluchistan xeric woodlands ecoregion covers the middle elevations of a series of mountain ranges of western Pakistan and northeastern Afghanistan, reaching 1,200 kilometres (750 mi) from the Arabian Sea in the south to the Hindu Kush Mountains and the Himalayas in the north. The characteristic vegetation is xeric (dry) woodlands of shrubs and herbaceous cover. The region has rich biodiversity but relatively few endemic species.

References

  1. "Altai steppe and semi-desert". World Wildlife Federation. Retrieved March 21, 2020.
  2. 1 2 "Map of Ecoregions 2017". Resolve, using WWF data. Retrieved September 14, 2019.
  3. "Altai steppe and semi-desert". European Commission, Joint Research Centre, Digital Observatory for Protected Areas. Retrieved March 23, 2020.
  4. Kottek, M.; Grieser, J.; Beck, C.; Rudolf, B.; Rubel, F. (2006). "World Map of Koppen-Geiger Climate Classification Updated" (PDF). Gebrüder Borntraeger 2006. Retrieved September 14, 2019.
  5. "Dataset - Koppen climate classifications". World Bank. Retrieved September 14, 2019.
  6. "Manyrak Mountains". Birdlife International. Retrieved March 23, 2020.