When I was in college, there was a wendaolin behind the school canteen, and hundreds of Metasequoias were planted. We also dug a hole and planted it. Later, I went to the Botanical Garden in Beijing. There are tall Metasequoia forests on both sides near Yingtaogou. Metasequoia glyptostroboides has a remarkable feature, that is, it grows against the wind and the light. As long as there is a gap, it will survive. This is what a friend told me, and it still has practical significance. Chinese name of Metasequoia glyptostroboides: Latin family name of Metasequoia: protection level of Taxodiaceae: 1 Distribution: Jiangsu (Nantong Dafeng Forestry Base), Hubei (Lichuan), Hunan (Longshan), Chongqing (Shizhu) and Shaanxi (Hanzhong) protection level: national first-class protected plant world. Now China has also built the largest artificial Metasequoia base-Dafeng Metasequoia base. Metasequoia plants appeared on the earth in Mesozoic Cretaceous. Almost all these plants disappeared after the ice age about 2.5 million years ago, except Metasequoia glyptostroboides. Metasequoia fossils were found in the strata from Late Cretaceous to Neogene in Europe, North America and East Asia. 1948, Chinese botanists discovered the surviving giant Metasequoia glyptostroboides in Modaoxi, Lichuan City at the junction of Hubei and Sichuan, with a tree age of about 400 years. Later, the remaining Metasequoia glyptostroboides forests were found in Metasequoia Dam and Xiaohe River in Lichuan City, Hubei Province. There were more than 5,000 trees with DBH above 20 cm, and a large number of trunks and cutting pockets were also found in valleys and farmland. Subsequently, trees over 200-300 years old were found in Lengshui, Shizhu County, Sichuan Province, Taro and Tani Lake, Longshan County, Hunan Province. Lower limit of elevation: 800m Upper limit of elevation: 1500m Metasequoia Price: First of all, we must understand the basic measurement methods of Metasequoia. Metasequoia investigation: There are two different uses 1: For wood, for example (furniture decoration), use professional rice to measure the cross section of wood cube. This means cubes, for example, what is the price per cubic meter? 2. For afforestation, generally measure the diameter of one meter or DBH (measured by one meter). Price of Metasequoia glyptostroboides: 1: If it is the first kind of wood, it is generally divided into finished products and semi-finished products, and the price is between 800-1/50 yuan. 2: If it is the price of Metasequoia glyptostroboides for greening, the meter diameter is 3-4-5-6-7-8-cm; 4.5-7.5- 10.5-25-40-70 yuan; DBH 8- 10 cm 80 yuan, 8 meters tall; DBH 10- 13 cm height 10 m 100 yuan; DBH 13- 15 cm height 12 m 200 yuan; The above prices were reported by the National Dafeng Metasequoia Base in August, 2007, and there are certain price fluctuations according to the market and the requirements for Metasequoia. Price of Metasequoia: In order to know the price of Metasequoia more accurately and immediately, you can search Dafeng Metasequoia Base or Dafeng Forestry Base. During the period of 1943, Professor Wang Zhan, a botanist, found three strange trees that he had never seen before in Modao West Road, Wanxian County, Sichuan Province, the largest of which was 33 meters high and 2 meters in bust. At that time, no one knew it, or even which genus it belonged to. Which subject? It was not until 1946 that Hu Xiansu, a famous plant taxonomist in China, and Zheng, a arborist, jointly studied it and confirmed that it was Metasequoia that lived on the earth's continent hundreds of millions of years ago. Since then, Metasequoia and Metasequoia have been added to plant taxonomy separately. More than 100 million years ago, when the earth's climate was very warm, Metasequoia glyptostroboides had grown in the Arctic, and then gradually moved south to Europe, Asia and North America. In the Quaternary, a large number of glaciers appeared on the earth, and Metasequoia glyptostroboides on all continents became extinct one after another. Only a small part of China survived. Before 1943, scientists only found its fossils in Mesozoic Cretaceous strata. Since the discovery of Metasequoia glyptostroboides in China, it has caused the world to shake! Known as the "living fossil" of the plant kingdom! At present, more than 50 countries have introduced cultivation from China, almost all over the world! China has its traces from Liaoning to Guangdong and Daozhen County in Guizhou. Metasequoia glyptostroboides is a deciduous tree with a straight trunk and branches extending sideways. The whole tree looks like a pagoda. It has sparse branches and leaves, beautiful tree shape, simple and elegant, solemn and dignified. Its bark is reddish brown, its leaves are slender and flat, and it droops and falls off after autumn. Metasequoia glyptostroboides is not only a famous ornamental tree species, but also a good tree species for afforestation in barren hills. Strong adaptability and rapid growth. Young, can grow more than 1 meter every year. Metasequoia glyptostroboides has high economic value, its heartwood is purplish red, and its material is delicate and soft. It is a good material for shipbuilding, construction, bridges, farm tools and furniture, and also a paper-making raw material with excellent texture. Metasequoia, Cetaceae, looks like Chinese fir and leaves. The height of the tree can reach 35 meters, the bark is peeled into thin slices, the lateral small trees are opposite, the leaves are linear and flat, and they are paired with each other, and they fall off at the same time as the lateral small branches in winter. These cones are monoecious and monoecious. The male cones are opposite on the branches and gather at the branches. There are no leaves on the branches, so the overall shape is general. The female cone was born alone on the top of a small tree. At this time, the branchlets have leaves and the cones are not drooping. There are usually 22-24 seed scales, which are alternately opposite, shield-shaped, and spread at the top. Each seed has 5-9 seeds, which are flat and surrounded by wings. This tree is a specialty of our country. Like light and wet, it grows fast and can be planted and propagated by cutting. It is an ideal tree species for landscaping. Its wood material is light and soft, and can be used for building, making utensils and making models. Study on Genetic Diversity of Metasequoia glyptostroboides Cultivated Populations The genetic diversity of 9 Metasequoia glyptostroboides Cultivated Populations was preliminarily studied by RAPD technique. With random primers of 16 10 bp, * * amplified 103 loci, of which 37 were polymorphic. Accounting for 35.92%. The percentage of polymorphic loci in each population is between 16.50% and 33.0 1%. The software processing results of POPGENE version 1.3 1 are as follows: Shannon information index of population is 0. 1930, genetic distance is 0.06533.1000000006, and genetic consistency is 0.9370-0.987/kloc-0. AMOVA analysis showed that genetic variation mainly existed in populations, accounting for 89.05%, and there was some differentiation among populations. The above results show that the genetic diversity of cultivated Metasequoia glyptostroboides population is slightly lower than that of natural population, covering nearly 80% of the genetic diversity of natural population. It can be confirmed that the provenance of Metasequoia glyptostroboides is mixed. They represent the level of genetic diversity of natural populations to some extent. Nine Metasequoia varieties. Bambusa fasciculata in Qianjiang did not amplify a unique locus, so it was regarded as a population and clustered with three populations in Hubei, Nanjing and Chengdu according to genetic consistency. Metasequoia glyptostroboides is not clustered into independent branches, but scattered, so it is not supported to classify Metasequoia glyptostroboides as Metasequoia varieties. From the genetic relationship, Metasequoia glyptostroboides should belong to Banghu Seed Orchard (BH) and Guanghua (GH) in Qianjiang, Hubei, which is also consistent with its distribution status.