Geographically, the tundra habitat lies in the zone extending from the northern coast to the south; this gradually transforms into the extensive and dense forests of the taiga that include a large part of Siberia and then into the gently sloping steppe land with trees only on the river banks.
Russian wildlife has been categorized by World Wide Fund for Nature into 13 bioregions which, as of 2012, have 101 zapovedniks (strictly protected areas) covering more than 33.5 million hectares (82.7 million acres) and 38 national parks (protected areas with implemented zoning).