What is the distribution area of Korean pine species?

The distribution area of Korean pine species is that Pinus koraiensis is produced in the mountains of Heilongjiang, Jilin and Liaoning at an altitude of 300 to 1800 meters above sea level. The natural distribution is roughly consistent with the extension of the Changbai Mountain and Daxing'an Mountains. Beijing and Shandong Mount Tai, Laoshan, Kunqu Mountain and other places have been introduced and cultivated. Pinus koraiensis adapts to light conditions in a large range, and the light requirement increases gradually with the increase of tree age. Most like the mountain dark brown forest soil with deep, fertile and good permeability. Pinus koraiensis is a shallow-rooted tree species with underdeveloped main roots and wide horizontal distribution of lateral roots, which is beneficial to the extreme harvest of soil nutrients. In addition, Korean pine is sensitive to humidity. The annual precipitation in the distribution area is 500 to 1200 mm, the wetness is above 0.7, and the growth is often poor below 0.5.