South Siberian forest steppe

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South Siberian forest steppe
Vid so skaly, vesna - panoramio.jpg
Landscape of the near Zelyony Bor, Krasnoyarsk Krai, in the Minusinsk Hollow
Ecoregion PA0817.png
Ecoregion territory (in purple)
Ecology
Realm Palearctic
Biome temperate grasslands, savannas, and shrublands
Geography
Area727,269 km2 (280,800 sq mi)
CountriesRussia

The South Siberian forest steppe ecoregion (WWF ID: PA0817) is a patchwork of grasslands and forests in the low-lying areas of south central Siberia. The region is one of high biodiversity as a transition zone between the West Siberian taiga to the north, and the Altai mountains to the south. There are also small patches to the east in Irkutsk Oblast. The ecoregion is in the temperate grasslands, savannas, and shrublands biome, and the Palearctic realm, with a Humid Continental climate. It covers 161,874 km2 (62,500 sq mi). [1]

Contents

Location and description

The ecoregion is a thin band of lowland terrain, 700 kilometres (430 mi) long, stretching from Tomsk in the west, to the east of Krasnoyarsk in southern Siberia. On the western edge there is a north-south extension that follows the Tom River in the Kuznetsk Basin. In the middle is another extension, covering a low area along the Yenisei River and some of its tributaries; this area is known as the Minusinsk Hollow. [1] To the west is the West Siberian broadleaf and mixed forests ecoregion, which is now mostly cultivated agricultural land.

Climate

The climate of the South Siberian forest steppe is Subarctic climate, without dry season (Köppen climate classification Subarctic climate (Dfc)). This climate is characterized by mild summers (only 1–3 months above 10 °C (50.0 °F)) and cold, snowy winters (coldest month below −3 °C (26.6 °F)). [2] [3] There is sufficient precipitation (averaging 200–400 mm/year) [4] to support patchy forests. The mean January temperature at the center of the ecoregion is −20 °C (−4 °F), and 18 °C (64 °F). [1]

Flora and fauna

The region exhibits the typical forest steppe mix of grasslands and forest too sparse to create a full canopy. Typical trees are birch, aspen and willow, generally found along the streams and in low areas. Swamps are common. The region was about 15% forested; this has been reduced by human activity. The most common grass is Calamagrostis epigejos (bushgrass). [4]

Protections

There are no federally protected areas in the South Siberian forest steppe ecoregion.

See also

Related Research Articles

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<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">Sayan intermontane steppe</span>

The Sayan intermontane steppe ecoregion is sometimes referred to as a "steppe island", being an expanse of grassland and shrubs surrounded by mountain forests in the Tyva Republic of south central Siberia, Russia. The Altai Mountains are to the west, the Sayan Mountains to the north, and the Tannu-Ola Mountains to the south. The ecoregion is in the temperate grasslands, savannas, and shrublands biome, and the Palearctic realm, with a Humid Continental climate. For much of its length, it follows the course of the upper Yenisei River. It covers 33,928 km2 (13,100 sq mi).

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

Salair National Park is located on the west slope of the Salair Ridge, which separates Altai Krai from Kemerovo Oblast. The low mountains are covered with coniferous forest, while the non-park surroundings to the west are steppe and forest steppe that has mostly been converted to agriculture. Because of its warm, humid summers, scientists have referred to Salair as the "rainforest of Siberia", with resulting high biodiversity and relict plants preserved from the pre-glacial period. The park was officially created in 2020; it is located in the districts of Zarinsk, Togulsky, Yeltsovsky and Soltonsky of Altai Krai.

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

Zigalga National Park is located on the high Zigalga Ridge of the Southern Ural Mountains in Russia, on the transition between Europe and Siberia. Much of the territory is untouched by human activity and so supports Ice Age relict floral communities through all altitude zones - pine and birch forest, dark coniferous taiga, alpine meadows and mountain tundra. The park was officially created in 2019. The park is located in the Katav-Ivanovsky District of Chelyabinsk Oblast.

References

  1. 1 2 3 "PA0817: South Siberian forest steppe". World Wildlife Federation. Retrieved September 4, 2018.
  2. Kottek, Markus; Grieser, Jürgen; Beck, Christoph; Rudolf, Bruno; Rubel, Franz (2006). "World Map of Koppen-Geiger Climate Classification Updated" (PDF). Gebrüder Borntraeger. Retrieved September 14, 2019.
  3. "Dataset - Koppen climate classifications". World Bank. Retrieved September 14, 2019.
  4. 1 2 "The Russian Steppe". Food and Agriculture Organization of the United Nations (FAO). Retrieved September 6, 2018.