| 词条 | South Siberian forest steppe |
| 释义 |
|name = Ecoregion: South Siberian forest steppe |image = Вид со скалы, весна - panoramio.jpg |image_size = 300 |image_alt = |caption = Landscape of the near Zelyony Bor, Krasnoyarsk Krai, in the Minusinsk Hollow |map = Ecoregion PA0817.png |map_size = 300 |map_alt = Ecoregion territory (in purple) |map_caption = Ecoregion territory (in purple) |ecozone = Palearctic |biome = Temperate grasslands, savannas, and shrublands |animals = |bird_species = |mammal_species = |border = |borders = |area = 727269 |country = |countries = Russia |state = |region_type = |elevation = |coordinates = |geology = |seas = |rivers = |climate = |soil = |conservation = |global200 = |habitat_loss = |habitat_loss_ref = |protected = |protected_ref = }} 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 ecozone, with a Humid Continental climate. It covers {{convert|161874|km2|sqmi|abbr=on}}.[1] Location and descriptionThe ecoregion is a thin band of lowland terrain, {{convert|700|km|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.[2] To the west is the West Siberian broadleaf and mixed forests ecoregion, which is now mostly cultivated agricultural land. ClimateThe region has a Subarctic climate - cold (Koppen classification Dfc). This climate is characterized by high variation in temperature, both daily and seasonally; with long, cold winters and short, defined summers. There is sufficient precipitation (averaging 200–400 mm/year)[3] to support patchy forests. The mean January temperature at the center of the ecoregion is {{convert|-20|C|F}}, and {{convert|18|C|F}}.[1] Flora and faunaThe 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).[3] ProtectionsThere are no federally protected areas in the South Siberian forest steppe ecoregion. See also
References1. ^1 {{cite web|title=Central European mixed forest|url=https://www.globalspecies.org/ecoregions/display/PA0412|website=Ecoregions of the World|publisher=GlobalSpecies.org|access-date=August 14, 2018}} 2. ^{{cite web|title=PA0817: South Siberian forest steppe|url=https://www.worldwildlife.org/ecoregions/pa0817|publisher=World Wildlife Federation|access-date=September 4, 2018}} 3. ^1 {{cite web|title=The Russian Steppe|url=http://www.fao.org/docrep/008/y8344e/y8344e0h.htm|publisher=Food and Agriculture Organization of the United Nations (FAO)|language=en|accessdate=September 6, 2018}} External links 3 : Ecoregions of Russia|Palearctic ecoregions|Ecoregions of Asia |
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