The remaining population has become concentrated in the Greater Khingan Mountains and several nature reserves in the Lesser Khingan Mountains.
One dataset was collected in the Greater Khingan Mountains from 1963 to 1999 (1963, 1976-1979, 1980, 1983-1988 and 1996-1999) (Gao et al.
Coniferous forest is mainly located in the Greater Khingan Mountains and is characterized by Larix gmelinii.
1B), but there was a considerable reduction in southern and eastern areas from the 1980s, especially in the Lesser Khingan Mountains where forest cover was subject to a severe decline from the 1950s.
The distribution became concentrated in the Greater Khingan Mountains in the 2000s.
In the 1980s there were three national nature reserves located in the Greater Khingan Mountains and Lesser Khingan Mountains, protecting about 2929.
For example, Larix gmelinii and Betula forest is vital to the black-billed capercaillie in the Greater Khingan Mountains (Song, 1991).
For instance, a hunting group killed 53 black-billed capercaillie during March to April in the 1980s in the Greater Khingan Mountains (Song, 1991).
The Japanese made some fatal assumptions about terrain, believing the western approaches untrafficable due to the vast Mongolian desert and the natural barrier formed by the Grand Khingan Mountains.
On 9 August 1945, the main attack took place on the western Manchurian border where the Red Army bypassed fortified border regions, moving though the desert and Grand Khingan Mountains with minimal problems.