The OBNP was established by the Parliament Resolution No: 29 dated April 14, 2000 with totally 415752 ha area that was divided into parts “A” and “B” included territories of Dadal, Binder, Norovlin, Bayan-adraga Soums of Khentii Aimag and Bayan-uul Soum of Dornod Aimag. As it supports forest steppe landscape and its composition and specific ecological functions and is a home to a number of rare and endangered forest and boreal coniferious forest birds in Mongolia and the globally endangered birds e.g. White-naped crane, Black crane, and Great bustard and a number of acquatic Asian species, Onon Balj was taken under the State protection as a National Park, to protect the biodiversity and its genetic funds and develop environmentally friendly tourism based on natural and historical sites

Based on findings and results of researches conducted in the OBNP and feedback and comments by local communities, researchers and explorers, the following target biological species have been addressed through this management plan:

Target species:

1. Red deer (Cervus elaphus)
2. Taimen (Hucho taimen)
3. White-naped crane (Grus vipio)
4. Great bustard (Otis tarda)

Target communities:

1. Ereen Nuruu (mountain range)

Target ecosystems:

1. Pine forest
2. Floodplain forest