Bogd Khan Uul Biosphere Reserve is a nature reserve in Mongolia, situated to the south of Ulan-Bator. It is in the southern part of the forest steppe zone and is in the Khentii Mountains area. It includes Bogd Khan Mountain, and was designated as a UNESCO Biosphere Reserve in 1996.
Bogd Khan has a total area of 67,300 hectares (260 sq mi) and is located between 47°43' to 47°54'N and 106°46' to 107°10'E. Its altitudinal range is between 1,310 and 2,270 m (4,300 and 7,450 ft) above sea level. It consists of a core area of about 41,651 hectares (160.82 sq mi) surrounded by a buffer zone and certain transition areas. The northern slopes of Bogd Khan Mountain are covered with dense coniferous forests while the southern side is bare rock.
In 1778 the Mongolian governor of what is now Ulan-Bator, petitioned the Qianlong Emperor requesting approval to hold twice yearly ceremonies dedicated to Mount Bogd Khan Uul. Permission was granted eight days later for ceremonies to be held twice annually. In 1783, the local government of the Qing dynasty declared the Bogd Khan a protected site, to be preserved for its beauty, making it the oldest national park in the world.
The reserve has a number of habitat types including grassland, taiga vegetation, Alpine tundra and bare rock. In some areas there are mixed forest with larch, birch, pine and poplar. Some of the most threatened mammals in the reserve are the musk deer, the roe deer, the sable and the Arctic hare.
According to wikipedia