Why is the wood of camphor tree so fragrant?
Cinnamomum camphora, also known as camphor tree, camphor tree and so on. , is one of the four famous trees in Jiangnan. Cinnamomum camphora is a subtropical tree species, mainly distributed in the south of the Yangtze River. It is an evergreen tall tree of catalpa in Lauraceae. Flowers in early summer, yellow-green panicles, broad crown, lush foliage, dense shade, magnificent. It is an excellent street tree and shade tree. Cinnamomum camphora has the characteristics of temperature resistance, corrosion resistance and pest control because of its special aroma and volatile oil. It is an ideal material for making expensive furniture, high-grade buildings, shipbuilding and sculpture. Camphor for daily use is a white crystal distilled from the roots, stems, branches and leaves of Cinnamomum camphora, which is colorless, transparent and has a cool fragrance. Used for moth prevention, and also widely used in medicine and chemical industry. People often regard Cinnamomum camphora as a landscape tree and a geomantic tree, which means avoiding evil spirits, longevity and good luck. Cinnamomum camphora is deeply favored by urban and rural residents, and has been selected as the "city tree" in Hangzhou, Yiwu, Maanshan and other cities. Cinnamomum camphora has its own characteristics. Its bark is rough, but its texture is even, without mottling of poplar and tumor of willow. The branch is divided into two and two into four. They won't cut corners or gild the lily. The crown of the tree is spherical, drawing a beautiful curve in the sky. Zhangshu is the calligraphy of Dongpo, Su Like. It is round and continuous, delicate and elegant, but it is quite satisfactory. If it is a hillside full of camphor, it is Su Dongpo's peerless monument. Therefore, people who study art like to use Cinnamomum camphora as a sketch object. What is even more rare is that camphor tree has a special fragrance, which can repel insects. So gardeners hardly need to spray pesticides. I feasted my eyes on my business trip in Jiangxi, which is famous for its camphor trees, which greatly satisfied my special hobby. Camphor trees are everywhere in Jiangxi, and many ancient trees over 500 to 600 years old are scattered in villages, rivers and hilltops.
What does camphor tree look like?
Evergreen tree, 30 meters high, 5 meters in diameter at breast height, with irregular bark longitudinally; Branches, leaves and wood all smell of camphor.
Leaves alternate, thin leathery, ovoid or ovoid-elliptic, 5 5- 10/0cm long and 2.5-5.5cm wide, with sharp tip or near tail tip, wide wedge-shaped to nearly round base, full-margin, slightly wavy, hairless on both sides, three veins falling off at the base, feather veins coexisting, and obvious glandular pits in the axils; The petiole is 2-3 cm long. Flowers bisexual, panicles axillary.
Berries are nearly spherical, 4.5-6 mm in diameter, initially green, turning red, and shiny purple-black when ripe; The top of the fruit holder is flat. The flowering period is April-May.
The fruit 10- 1 1 ripens, bears fruit in different years, and produces high yield once every two years. Cinnamomum camphora is a warm-loving tree species. The most suitable local annual average temperature is 16~ 17oC, and the absolute minimum temperature is not lower than -7oC.
The requirement of Cinnamomum camphora for soil is that the soil layer is deep and fertile, and it is neutral or acidic when wet (PH5.5~7). Cinnamomum camphora is resistant to low temperature, likes shade when it is young, likes strong light in its prime, and has a long life. There are often old trees beside the village.
Cinnamomum camphora has fine wood grain, flexible and compact, smooth and beautiful appearance, moderate hardness, easy processing, containing volatile oil and special fragrance, moisture-proof, anti-corrosion, insect repellent, small deformation and long shelf life. It is a valuable material for furniture, architecture, cabinets, sculpture and shipbuilding. Camphor and camphor oil can be extracted from roots, branches, leaves and wood. Camphor and camphor oil are important raw materials for modern medicine, metallurgy, chemicals, spices, food industry and military industry, and the seeds can be squeezed to make soap. Camphor and camphor oil are also our traditional export commodities.
Cinnamomum camphora has the advantages of fast growth, long life, stretched crown, strong trunk, strong wind resistance, less pests and diseases, strong germination, dark green luster of leaves, and no fear of smoke and dust. It is a precious timber and special economic tree species in southern China, and it is also an important tree species for forest protection, fire prevention, soil and water conservation and urban greening. Planting Cinnamomum camphora on all sides can beautify and purify people's working, learning and living environment.
Is camphor tree poisonous and harmful?
Cinnamomum camphora is nontoxic and harmless.
Cinnamomum camphora is not only harmless, but also brings value to human beings. Camphor and camphor oil can be extracted from wood, roots, branches and leaves of Cinnamomum camphora. Camphor and camphor oil are used in medicine and perfume industry. Stone contains fat, with an oil content of about 40%. Oil is used in industry. Roots, fruits, branches and leaves are used as medicine, which has the functions of expelling wind and cold, strengthening heart and relieving spasm and killing insects. Wood is also used in shipbuilding, cabinets and buildings.
According to the chemical composition of camphor oil, it can be divided into three types, namely Cinnamomum camphora (mainly containing camphor), Cinnamomum camphora (mainly containing linalool) and Cinnamomum camphora (mainly containing terpineol). The economic value of each type is different, so it should be subdivided and combined, and it can be identified according to the subtle differences of camphor tree morphology and the smell of branches and leaves and wood.
Extended data:
The legend of camphor tree:
According to legend, there was a couple in Heping Village, Longgou Township, Chongyi County in the late Qing Dynasty. The man's name is Xie Xiangui and the woman's name is Lai. Although living in a thatched cottage and dressed in rags, the couple are kind-hearted and love each other.
One night, the couple came home from work and found a pair of injured white cranes struggling in front of their house. The couple moved into compassion and took good care of the crane until it recovered. The villagers advised the couple to sell the crane for money, but the kind couple put the crane under the ancient camphor tree in front of the door. The crane flew in the air, suddenly turned around and called the couple three times to say goodbye.
A few days later, two camphor trees miraculously grew in the place where the cranes were released. Under the care of Cinnamomum camphora, the couple are well-off and their children are well fed. These two camphor trees are also regarded as "happiness trees" and "harmony trees" by the villagers.
Sogou encyclopedia-camphor tree (evergreen tree of Lauraceae)
People's Daily Overseas Edition-About Zhangshu
What are the advantages and disadvantages of camphor tree?
The benefits of camphor tree:
Camphor and camphor oil can be extracted from roots, trees, branches and leaves. Camphor is used in medicine, plastics, explosives, antisepsis and pesticides. Cinnamomum camphora oil can be used as raw materials for pesticides, mineral processing, soap making, fake paint and essence. Camphor also has the functions of strengthening the heart, relieving fever and killing insects.
2. Crush camphor leaves and apply them on the surfaces of hands and feet to prevent mosquitoes.
According to the research of scientists, the chemical substances emitted by camphor tree have the ability to purify toxic air, have the function of preventing cancer and insects, and filter out fresh and clean air, which is refreshing. Living in an environment with camphor trees for a long time will avoid suffering from many incurable diseases.
4. Cinnamomum camphora has dense branches and leaves and beautiful trees, which can be used for greening street trees and windbreaks.
5. Wood is of high quality, resistant to pests, water and moisture, and can be used in construction, shipbuilding, furniture, cabinets, sheets, sculpture, etc.
6. Strong cold tolerance, fast growth, dust absorption, water retention and strong air pollution resistance.
There is no literature to record the disadvantages of camphor tree.
Cinnamomum camphora, alias: Cinnamomum camphora, Cinnamomum camphora, Yaorenchai, Cinnamomum camphora, Cinnamomum camphora, Cinnamomum camphora and Cinnamomum camphora; Evergreen trees of Lauraceae and Cinnamomum, with a height of 30m and a diameter of 3m, and a broad oval crown; Broad crown, dense branches and leaves, magnificent, is an excellent green tree, street tree and courtyard shade tree. Widely distributed in the south of the Yangtze River in China, with Taiwan Province Province as the largest. All plants have the aroma of camphor, which can be used to extract camphor and camphor oil. Wood is hard and beautiful, suitable for making furniture and boxes. Cinnamomum camphora is resistant to chlorine, sulfur dioxide, ozone, fluorine and other harmful gases, which can repel mosquitoes and flies and resist short-term flooding. It is the main raw material for producing camphor. Excellent material, which is a good material for making furniture.
Beautiful camphor tree
Our campus is like spring all the year round, with flowers in full bloom and trees evergreen. There are tall and beautiful asparagus; Magnolia as white as snow; Caryophyllum japonicum with special meaning ... but what I like best is the old and beautiful performing camphor tree on campus. Decades of wind and rain have grown into towering trees. You see, it is about tens of meters high, which is better than a three-story teaching building. Its thick waist can only be surrounded by two children holding hands. Every time I pass it, everyone is intoxicated by its faint fragrance. Miss Chun came to the campus wearing a colorful gauze skirt. She touched the camphor tree gently and the trunk turned green. She pulled out the green branches and grew small green leaves, so bright green. Under the sunshine, every leaf seems to have a little creature beating. We like to breathe fresh air here and thrive on it. On a hot summer day, at noon, the sun roars the earth like a big fireball. Many people hide indoors and enjoy the coolness brought by air conditioners and electric fans, but it is still so lively under the camphor trees. Pieces of dark green leaves are bright and dazzling, covering a large sky layer by layer, just like setting up a huge green tent. We jump rope and kick shuttlecock below ... we have a good time. In autumn, osmanthus fragrans and camphor trees are also following the fashion. It dyed its hair colorful. Ye Ziqing's fragments are like jade, red like fire and yellow like gold. Green fruits turn black in summer. The ripe small fruit attracted many birds, who were enjoying delicious snacks, twittering as if to say: how fragrant and sweet! Hearing this, Qiu Feng's mother-in-law walked over and nodded. I didn't expect to shake the fruit all over the floor, just like throwing countless black pearls. Naughty children scrambled to step on it, making a crisp crack and spilling a string of cheerful notes. Winter is coming, the snow is falling, the ground is covered with a thick snow blanket, and the camphor tree is also covered with a white cotton-padded jacket. From a distance, layers of snow are falling. There are countless pears on the tree. Cinnamomum camphora is like an old man, watching the children peacefully make snowmen and have snowball fights ... which caused laughter. Cinnamomum camphora not only makes our campus more beautiful, but also makes our childhood happier. I love you, Zhangshu! .
Poems about camphor trees
Long summer just stopped and walked back and forth in Asakawa to see how those tall camphor trees covered the city one after another, hiding time and wasting morning and evening. Chang Xia felt that Asakawa had no summer solstice. No matter how high the sun rose and how hot white light it scattered, half of the city would always hide in the dark green shadow of camphor trees and be isolated from the world. Close your eyes and breathe safely. Those tall Cinnamomum camphora are like the colors repeatedly depicted in your dreams since childhood, and their eyes are full of vague and soft light of ignorant collision. The world we see-Cinnamomum camphora is flowing green, and the afternoon sunshine becomes transparent, winding to all the places it can reach, and there is a busy voice from the bus station not far away. People who fall asleep because of drowsiness cast trembling shadows. Spider webs loomed in the corner. The air is stretched with a gentle and comfortable rhythm, as if it has stopped at this point forever, so that there is no need to consider what direction it will evolve in the future. The posture of Cinnamomum camphora is the most beautiful. It often leans its body and frames the whole road into a green headspace with a semi-circular top with its opposite partners. The difference between Cinnamomum camphora and the original Cinnamomum camphora in Guilin is that its leaves are slightly smaller, so you can hold them in your hand. There is a faint fragrance that lingers for a long time. The tree is not as big as the original Cinnamomum camphora and its life span is even shorter than the original Cinnamomum camphora. The seeds in autumn are more and thicker than the original Cinnamomum camphora. Cinnamomum camphora is not tall, but its branches are thick, spreading in all directions and reaching far away. The dense leaves are green and shiny. Cinnamomum camphora is evergreen all year round. Whether in summer or winter, they are always so fluffy and dense. Camphor tree is not tall, but it is the most affectionate. It is covered with green leaves, covering all the branches. It looks like a sturdy umbrella, which can shelter people from the wind, rain and sunshine.
Cinnamomum camphora composition
There is a camphor tree in front of my house.
Cinnamomum camphora, also known as Cinnamomum camphora, is a kind of Lauraceae. Its branches are thick and its bark is rough. It never looks like stripes of poplars or nodules of willows.
Its crown is round, like line of beauty painted in the sky. There are many black spots on its leaves, mostly caused by pollution.
Its leaves are large and oval, like a big and long flat fan. Camphor leaves will bloom.
Generally, flowers bloom in spring, mostly yellow, small and numerous. Every flower is like a ball, but it turns purple and black when it matures. Camphor tree is regarded as a lucky tree for avoiding evil spirits, longevity and good luck among the people.
In many cities, Cinnamomum camphora has also been chosen as the "city tree". Its life span is very long, and the rightmost one can reach 1000 years old. It can be called "longevity tree". Cinnamomum camphora plays a great role, which can be said to be a treasure from top to bottom. Don't believe you: the leaves, branches and roots of Cinnamomum camphora have refreshing effects, so I often pick a few leaves of Cinnamomum camphora and put them on my desk to keep myself awake when I do my homework; The bark of Cinnamomum camphora is now also used to make medicines, which can treat various symptoms such as high fever, cold, measles and whooping cough, and become one of the essential medicines for people. It has dense branches and leaves, large crown, strong shade and majestic tree posture, which can smoke, conserve water, fix soil and prevent sand and beautify the environment. It is an excellent tree species for urban greening and is widely used as street trees, shade trees, shelter forests and scenic forests.
The trunk of camphor tree can be made into all kinds of wooden furniture, which is anti-corrosion and insect-proof, and also exudes a fragrance. It is a good material for making furniture and carving ... this is camphor tree, which brings convenience to people.