What is the origin and significance of Arbor Day?
March 12 is our own Arbor Day and the anniversary of Sun Yat-sen's death. Dr. Sun Yat-sen attached great importance to forestry construction before his death. When he was the interim president of the Republic of China, he established the Ministry of Agriculture and Forestry, and the Mountain Forest Department was in charge of the national forestry administration. 191410/In June, the first forestry law in China's modern history was promulgated, and in July, 19 15, the government designated the annual "Tomb-Sweeping Day" as Arbor Day.
1979 In February, the Sixth Session of the Fifth National People's Congress passed a resolution to designate March 12 as China Arbor Day. The significance of this resolution lies in mobilizing people of all ethnic groups to actively plant trees and speeding up the pace of greening the motherland and various forestry construction. Our country designated the date of Sun Yat-sen's death as Arbor Day, also to commemorate Sun Yat-sen's great achievements, symbolizing that his unfinished wish will be realized in new China and will be better realized.
The significance of Arbor Day
The significance of Arbor Day is to regulate climate, save water and reduce pollution. Moreover, afforestation can not only green and beautify homes, but also play a role in expanding forest resources, preventing soil erosion, protecting farmland, regulating climate and promoting economic development. This is a grand project for the benefit of present and future generations.
The function of planting trees
First, balance the earth's carbon dioxide.
Forests are the main consumers of carbon dioxide. Every hectare of forest produces 10 tons of dry matter, which will absorb 16 tons of carbon dioxide and release 12 tons of oxygen, making the forest a huge oxygen storage. So afforestation has become the main way to slow down the greenhouse effect.
Second, wind and sand fixation.
Forests can reduce wind erosion intensity by reducing wind speed and changing wind direction; The strong roots of trees, especially shrubs, can fix soil particles. Practice has proved that building windbreaks, combined with agricultural and water conservancy measures, can achieve good windbreak and sand fixation effects.
Third, soil and water conservation.
Forests can regulate runoff and water quantity in dry season, maintain soil and water, reduce river sediment content and alleviate flood disasters. The observation shows that the litter layer with the thickness of 1 cm can reduce the surface runoff to 1/4 of the bare land, and the sediment amount can be reduced by 94%. The amount of soil loss in bare land caused by rainfall is more than 0/000 times of that in forested land, while the soil consolidation ability of the combination of trees, irrigation and grass is more than 0/000 times of that in pure grass. It is estimated that China's forests reduce the total soil erosion by 24.6 billion cubic meters every year, reduce the soil organic matter loss by 384 million tons, and the soil protection value reaches more than 260 billion yuan. In addition, forests have a fundamental mitigation effect on preventing riverbed rise, floods and droughts.
Fourth, save water.
Forest is a natural "green reservoir", which can promote the normal circulation of sky water, surface water and groundwater. When it rains, more than 20% of the rainfall is intercepted by tree crowns and branches and leaves, and 5% ~ 10% is intercepted and absorbed by ground leaves and weeds. Soil with granular structure in forest can quickly convert surface water into groundwater. According to incomplete estimates, the annual water conservation capacity of forests in China is 347.3 billion tons, equivalent to 75% of the total storage capacity, and the annual water conservation value is more than 250 billion yuan.
5. Protect biodiversity.
Forest is the "home of species" and the biggest treasure house of biodiversity and biological gene resources. More than 50% species in the world inhabit and multiply in various forests, mainly natural forests.
Poem about Arbor Day: White-headed plants pine laurel, and become forests sooner or later. -Bai Juyi
Buy flowers with money and plant them on the east slope of the city. But buying flowers is not limited to peaches, plums and plums. -Bai Juyi
Returning to spring, planting trees, planting poems, enlightening future generations, planting trees and loving them, and greening their homes. —— Li Hua
The general's western expedition has not yet returned, and Huxiang disciples are full of Tianshan mountains. The newly planted willows are three thousand miles long, attracting the spring breeze to cross Yumen. -Zuo Tang Zong
February Dongfeng Su Causeway Road, between willow trees and peach blossoms. -Su Dongpo
Ask for 100 peach trees and send them to Huanhua Village before the spring. -Du Fu
More like a child on earth, planting flowers and bamboo to keep the wind and smoke. -Wang Anshi
The mountains are cold and blue, and the autumn water flows. Leaning against a stick and firewood at the door, dinner smoke floated out of the house. Just get drunk and recite a wild poem in Wuliu? . -Wang Wei
Jiangzhou Sima Ri is the secretariat of Zhongzhou. The backyard is full of pine trees, which were planted before Liu Yin. -Bai Juyi
Open up wasteland in the south and return to the garden. There are more than ten acres of square houses, 89 thatched houses, shady back eaves and front eaves of Luotang. -Tao Yuanming
Lao Feng lives in Xuzhou, where trees are shaded. Whoever cuts down my tree, I will cut off his head. -Feng Yuxiang
After the rain, the willow branches are heavy and loose with deep smoke. -Zhang Wei
Liuzhou Liuci history, planting trees along the Liujiang River. Laughing and laughing is a story that continues into the past. When you cover the ground, you will hang the curtain, and when you dry it, you will ascend to heaven. Be good at thinking of people and spread it gradually. -Liu Zongyuan
There is a tree in the east of the building, and its branches and leaves are blowing smoke. I planted peach trees and won't come for three years. -Li Bai
The eaves of grass are long and clean, and flowers and trees are planted by hand. One water protects the field, and two mountains give green. -Wang Anshi
Xia Meng is lush in this season, and my home is surrounded by green trees. -Tao Yuanming
Last year, Dongpo picked up gravel and planted a 300-foot Huang Sang. -Su Dongpo
The famous saying about Arbor Day is 1. Make the earth younger.
2. The predecessors planted trees, and the descendants enjoyed the cool, leaving room for sustainable development for future generations.
3. immediate wealth, picking dirt; In the long run, planting more trees will make you richer.
Life is green, so is hope.
5. Make the earth younger.
6. Tree planting is suitable for the next generation at present.
7. The Great Wall of Wan Li defends against foreign enemies, and the Great Green Wall benefits mankind.
8. More care, more care, starting from me, caring for every grass and tree in nature.
9. Water is the source of life, and trees are the guardians of water.
10. Although safflower and green willow can withstand wind and rain, how can the tender branches and leaves be incomplete?
1 1. One flower and one world, one leaf and one bodhi; Plant a tree and the harvest will be green.
12. Arbor Day, you also come to contribute your strength to make the earth grow beautiful hair!
13. A forest of two trees is dyed all over the north and south of the river, and the only seedling is green and dripping, but how can it be worth the wind and sand?
14. It rains in succession during the Qingming Festival, and afforestation is in full swing.
15. More green leaves, more warmth.
16. There are no tree pots in the village and no green sand in all directions.
17. Tree planting benefits the younger generation.
18. Say goodbye to the hustle and bustle of the city and embrace green.
19. Cherish the green and cherish the home we have.
20. Afforestation benefits the present and the future.
2 1. Trees are the guardians against sandstorms. If you don't want the world to become a desert, plant trees!
22. The Great Wall of Wan Li defends against foreign enemies, and the Great Green Wall benefits mankind.
23. Put down the axe and plant trees diligently!
24. In full of green on campus, flowers are blooming everywhere.
25. Keep the trees and cover the barren hills, and don't worry about food and clothing.
26. The loss of the earth's umbrella, the forest, will bring endless disasters.
27. Arbor Day, give the earth some color and move together!
28. Love forests for afforestation, strengthen land greening, and safeguard the ecological environment on which human beings depend.
If you want to be rich, plant more trees.
30. Life is green, so is hope. On March 12 Arbor Day, everyone will plant small trees, one tree, two trees and three or four trees. After planting, fertilization will make young trees grow into big trees, and everyone will do it. Greening the earth is everyone's responsibility.
Arbor day March 12 composition, do you know what this day is? By the way, today is Arbor Day in China.
The teacher said, "Afforestation has provided many things for our life. Afforestation not only provides oxygen, purifies the air, beautifies the environment, and is conducive to protecting the ecological environment, but also can maintain water and soil. " After listening to the teacher, we all want to have the opportunity to plant trees by ourselves. The teacher said, "Then we will plant trees tomorrow and make some contributions to afforestation."
For tomorrow's tree planting activity, my mother and I went to the supermarket to buy a small shovel, but we couldn't find a suitable bucket. When I got home, I told my father that he immediately found a bucket that I hadn't used for many days, but it was too dirty. In order to let me finish my homework and go to bed early, my father said he would help me wash it. In less than ten minutes, a bucket as clean as new appeared.
The next day, the spring breeze was warm and sunny. I took a clean bucket and a brand-new shovel and went on the road happily.
After the students met, they walked to the planting area. Yang Yang and I were assigned to a group, and the teacher gave us a small sapling. I carefully protected the saplings, while Yang Yang was carrying a bucket and a shovel. We chose a clearing and dug a hole. Soon, I was sweating like a pig. Yang Yang gave me a break. I shook my head gratefully, wiped the sweat from my forehead and continued to dig. I also try to mash up the dug soil. Finally, I dug it up. I gently planted the roots of the saplings in the pit to support the saplings, and Yang Yang was soon covered with soil.
We also watered the saplings according to the teacher's requirements. Then I hung my elaborate "ID card" on the sapling, and we agreed to visit the sapling we planted on this day next year. We hope that the saplings will grow and thrive with us.