Ask for an encyclopedia of all pine trees ~ that is, species.

China is one of the countries with the richest gymnosperms in the world. From the perspective of Pinaceae, it can be fully explained that China is a veritable "hometown of gymnosperms". In China's vast mountainous Yuan Ye, there are not only lush pine, larch, spruce and fir forests, but also many extremely precious and rare Pinaceae trees hidden in some deep mountains and forests. Among the first batch of rare and endangered plants under special state protection, there are 39 species of Pinaceae, accounting for110 of the total (389 species). Among them, Cryptomeria fortunei is listed as the first-class key protected plants, Abies baishanzu and Pinus yunnanensis 17 species are listed as the second-class key protected plants, and Taxodium mexicana and Pinus sylvestris var. mongolica/0 species are listed as the third-class key protected plants.

Pine Tree (18) Twenty years ago, few people in the world knew that there was a mountain called baishanzu on the southeast coast of China. During the period of 1976, Wu Yiming, a senior engineer of Zhejiang qingyuan county Forestry Institute, made a blockbuster. The Baishanzu Abies discovered and named by him made baishanzu, a "forgotten corner", shine brilliantly in the field of world botany. Among the 50 known fir species in the world, Baishanzu fir is the most precious. Because this kind of tree only grows on the southwest slope of baishanzu Peak in China, there are only three trees alive, one is weak and the other is malnourished. For a species, this is only half a step away from extinction. 1987, Abies baishanzu was listed as one of the most rare and endangered 12 plants in the world by the international commission for species protection. Relevant domestic units are also actively taking measures, hoping to turn this endangered plant into safety through artificial propagation. Compared with Baishanzu Abies, the silver fir became famous 20 years earlier. Although Yang Xianjin, a Chinese botanist, collected the branches and leaves of this plant in Jinfo Mountain, Sichuan Province as early as 1938, this specimen has not been identified because there are no flowers and cones. It was not until 1955 that the scientific investigation team led by Professor Zhong collected cone plant specimens in Huaping forest area of Pisheng County, Guangxi, and Taxodium distichum was named and published by botanists Chen Huanyong and Kuang Keren. Cryptomeria fortunei is a fossil plant, which was once considered extinct on the earth. Its cone fossils and pollen were found in the Tertiary strata in Siberia at 60 degrees north latitude and southwest France, respectively. The discovery of living silver fir shocked botanists, and western scholars were even more impressed by China. At present, there are only a few thousand Cryptomeria fortunei in China, which are very rare. They are distributed in Jinfo Mountain in Sichuan, Huaping Mountain and Dayao Mountain in Guangxi, Jiefu Mountain and Bamian Mountain in Hunan, Daozhen Mountain and Tongzi Mountain in Guizhou. Cryptomeria fortunei can only grow in the deep mountains where there is no cold in winter, no heat in summer, abundant precipitation and very humid air, and the requirements for the environment are very high. Therefore, although it has beautiful appearance and excellent wood, it is difficult to introduce and cultivate, and it is still a rare tree species in the world botany and landscape industry. People love Cryptomeria fortunei and give it many touching names: "Living Fossil of Plants", "Giant Panda in Plants", "Treasure of China Forest" and "Pearl of Seaside" ... They are more eager for it to come out of the mountains and shine. Dense yellowish brown or reddish brown pilose. The cone is 9 ~ 14 cm long, and the seed scales do not open or slightly open after maturity. Seeds do not fall off and have no wings (figure 1 Korean pine). It is the main tree species in Xiaoxing 'anling and Changbai Mountain areas in China. The northwest border of China is Aihui to Bei 'an, and the southwest border is Dandong to Benxi. From China to the northeast, it also extends to the southern coastal areas of the Far East of the Soviet Union, east of Heilongjiang and Wusuli rivers, and is distributed to South Korea, central Honshu and Shikoku mountainous areas. The shape of Siberian Korean pine is similar to that of Korean pine, and its main feature is that there are yellowish hairs on the branchlets; The cone is 5 ~ 8 cm long; The top of the seed scale is round and folded in. In China, the canas River and Qom River basins in the northwest of Altai Mountain in Xinjiang are vertically distributed in the range of 1600-2350 meters above sea level, and are often mixed with Larix gmelinii in Xinjiang. It is also distributed in the northeast of the European part of the Soviet Union and Siberia.

Edit the division of pine trees in this paragraph.

There are many kinds of pine trees, such as Podocarpus and Pinus bungeana. Industrial tree species include Korean pine, white pine and yellow pine. Cedar, black pine and masson pine are also common. There are nearly 80 kinds of pine trees in the world. Although there are many kinds, the leaves are slender and needle-shaped, commonly known as pine needles. Most needles are gathered by one or several leaves. Pine with one leaf and one needle is only distributed in Nevada and Mexico in the United States, belonging to a few varieties. Two-needle bundle of two-leaf pine is not only a wide variety, but also widely distributed, such as Pinus tabulaeformis and Pinus sylvestris var. mongolica. Pinus sylvestris var. mongolica, Pinus thunbergii and Pinus densiflora distributed in several provinces of North China and Northwest China, Pinus massoniana, Pinus taiwanensis, Pinus alpine and Pinus Bashan in Qinba Mountain area, and Pinus Taiwan Province and Pinus brevifolia in North America. Most of them are the main tree species for afforestation in barren hills in China. Three-needle and three-leaf pine includes Pinus bungeana, Pinus yunnanensis, Pinus Simao in Sichuan and Yunnan, Pinus elliottii and Pinus taeda introduced from central and southern China. A bundle of four-needle pine trees is rare and only distributed in California, USA. Besides, eggs and pine are in bundles of four or five needles. There are many kinds of pine trees with five needles in a bunch, which are widely distributed, including Korean pine in the northeast, Huashan pine, Qiao pine, Guangdong pine in the northwest and southwest provinces, Anhui five-needle pine, Dabie mountain five-needle pine, Chinese pine and Taiwan Province fruit pine. The difference of pine needles helps us to classify and identify pine trees and understand their ecological characteristics. Usually, five-needle pine is suitable for humid environment and has strict requirements on soil, while two or three-needle pine is more drought-tolerant and can grow in thin soil. For example, a bunch of Pinus tabulaeformis with two needles has strong adaptability to land climate and atmospheric drought, and of course it also sags with its needle pores. Covering the leaves with wax can reduce partial evaporation. ..