Abies is an evergreen tree of Pinaceae, which grows in the mountain cold zone with an altitude of 2500-4000 meters. The height can reach 30 meters, DBH 3 meters, the end of the trunk is straight and the tree shape is neat. There are many kinds of Chinese fir, which can be roughly divided into three categories: one is shiny yellow-green Metasequoia, also known as Chinese fir and hemlock; The other is gray fir with blue-green leaves and dull leaves, also known as brown fir, mountain fir and soaking fir; There is also a kind of Chinese fir with thin and soft leaves and drooping branches, which is also called soft-leaved fir. Known as the "Almighty Wood", Qinling Abies Fan Jing Abies Chayu Abies Bashan Abies Minjiang Abies Longbract Abies Zhongdian Abies Stinky Abies Cangshan Abies Pine Xianbei Abies Motuo Abies Sichuan Yunnan Abies Longbract Abies Yuanbaoshan Abies Baishanzu Abies Sikkim Abies Nujiang Abies Guo Huang Abies Taiwan Abies Guo Zi Abies Tibet Abies and other Abies are generally distributed in high altitude mountainous areas such as Sichuan and Guizhou, Guangxi and Yunnan, so the latitude distribution is generally high at low latitudes. Sequoias such as Tibet Sequoia Sumeru Sequoia Sequoia, Sichuan Sequoia, Nujiang Sequoia and Big Sequoia are mainly distributed in China, Tibet and Sichuan. Metasequoia Myanmar Spruce Xianbei Spruce Red Spruce Snow Mountain Spruce White Spruce Split Leaf Spruce Lijiang Spruce Kangding Spruce Linzhi Spruce Guo Huangyun Spruce Western Sichuan Spruce is mainly distributed in low latitude and cold areas such as Tibet and Sichuan, but this kind of spruce is just different. They are mainly distributed in coniferous forests at high latitudes, and the main areas are Qinghai, Jilin, Heilongjiang and Inner Mongolia. There are other kinds of Chinese fir, such as yew, hemlock and yew, which are probably in this range.