Arbor day blackboard writing content daquan

How time flies! Before you know it, we are about to celebrate Arbor Day, and all classes have begun to make blackboard newspapers with the theme of Arbor Day. The following is the "Encyclopedia of Blackboard Newspapers on Arbor Day" compiled by me for your reference only. Welcome to read it. Origin of Arbor Day

This festival was established after the founding of New China. In 1979, at the proposal of Deng Xiaoping, it was decided at the sixth session of the Fifth the National People's Congress Standing Committee (NPCSC) that March 12th was designated as Arbor Day in China.

Although Arbor Day was established after the founding of New China, the history of planting trees did exist in ancient times. The ancients had the tradition of planting trees by inserting willows in Tomb-Sweeping Day every year. According to records, a man named Wei Xiaokuan began to plant trees in his place of employment more than 14 years ago in the Western Wei Dynasty.

Wei Xiaokuan was a famous soldier in the Western Wei Dynasty. It is recorded in the History of the North that Wei Xiaokuan once served as the secretariat of Yongzhou. At that time, people would build earth platforms on the official roads as a sign of road mileage.

after Wei Xiaokuan went to Yongzhou to take office, he found that this method of setting up earth platform to record mileage was not practical. The earthen platform is easy to break down and needs frequent maintenance, which not only increases the financial expenditure, but also makes the people suffer more labor. After investigation, Wei Xiaokuan ordered that the earthen platform on the official road in Yongzhou be removed and replanted with a locust tree.

This method can not only mark the distance, but also provide shelter from the wind and rain for pedestrians when the locust tree grows up, and it doesn't need to be repaired. Wei Xiaokuan's practice has lightened the burden on the people and reduced the financial expenditure, which has been studied by many local officials.

The people's awareness of planting trees and greening in China has been started for a long time, and it has been inherited by generations. In 1912, when Sun Yat-sen was the provisional president of the Nanjing government of the Republic of China, he also stipulated that trees should be planted throughout Tomb-Sweeping Day every year. After the death of Dr. Sun Yat-sen, in order to commemorate this great man, everyone changed the day when he died to Arbor Day, which is March 12th.

After the founding of the People's Republic of China, the government also advocated tree planting. In 1979, at the suggestion of Deng Xiaoping, the 6th meeting of the 5th the National People's Congress Standing Committee (NPCSC) decided to designate March 12th as the Arbor Day in China. The significance of Arbor Day

The purpose of Arbor Day activities is to stimulate people's feelings of loving forests and afforestation, improve people's understanding of forest functions, promote the greening of the country, and achieve the purpose of loving forests, expanding forest resources and improving the ecological environment. It is a festival activity stipulated to mobilize the whole people to plant trees!

Arbor Day activities are also of great practical significance. The significance of Arbor Day activities is not that everyone should plant a tree on Arbor Day, but that through the coming of Arbor Day again, all of us will pay more attention to greening and environmental protection and take better actions.

firstly, forests can balance the carbon dioxide of the earth. Forests are the main consumers of carbon dioxide. Producing 1 tons of dry matter per hectare of forests will absorb 16 tons of carbon dioxide and release 12 tons of oxygen, which makes forests a huge oxygen reservoir. So afforestation has become the main way to slow down the greenhouse effect.

secondly, forests can prevent wind and fix sand. Forests can reduce the intensity of wind erosion by reducing wind speed and changing wind direction; The strong roots of trees, especially shrubs, can fix soil particles. Practice has proved that good windbreak and sand fixation effects can be achieved by building windbreak forest and cooperating with agricultural and water conservancy measures.

thirdly, forests can keep water and soil. Forests can regulate runoff and water quantity in dry season, maintain soil and water, reduce sediment content in rivers, and alleviate flood disasters. The observation shows that the 1 cm thick deciduous layer 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 1 times that of forest land, but the soil fixation ability of the combination of trees, irrigation and grass is more than 1 times that of pure grass. According to some calculations, China's forests reduce the total amount of soil erosion by 24.6 billion cubic meters every year, reduce the loss of soil organic matter by 384 million tons, and the value of soil protection reaches more than 26 billion yuan. In addition, the forest has a fundamental mitigation effect on preventing the riverbed from rising, floods and droughts.

fourthly, forests can conserve 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 2% of the rainfall is intercepted by tree crowns and branches and leaves, and 5% ~ 1% is intercepted and absorbed by fallen leaves and weeds on the ground. The soil with granular structure in the forest can convert surface water into groundwater quickly. According to incomplete estimates, the annual water conservation capacity of forests in China is 347.3 billion tons, which is equivalent to 75% of the total reservoir, and the annual water conservation value reaches more than 25 billion yuan.

Fifth, forests can protect biodiversity. Forest is the "home of species" and the largest repository of biodiversity and biological gene resources. More than 5% of species in the world inhabit all kinds of forests, mainly natural forests. The ancient poem

Planting Trees

on Arbor Day —— Yu Gu in Tang Dynasty

Planting a new tree benefits its neighbors, and Ye Fu is like coming to the old mountain in spring.

many trees make a man old first, so it's a shame to see him climb.

Zhu Xuqing looks for fruit to plant

-Tang Du Fu

The thatched cottage wants to plant flowers now, regardless of green plums and Huangmei.

however, in stalagmite street, I went home, and I sought it in the orchard square.

planting a poem on a willow play

—— Liu Zongyuan of Tang Dynasty

Liuci History of Liuzhou, planting a willow beside the Liujiang River.

Laughing and joking is a story, which goes on into the past year.

when the ground is covered with shade, it will be towering when it is dry.

if you are good at thinking about others, you will be ashamed to pass it on.

tree planting

—— Meng Jiao, Tang dynasty

Trees are planted in spring, and it is difficult to stay in spring.

if you look at the flowers in the morning and evening, who can avoid parting worries?

I've lost my mind, but I haven't stopped planting.

Hu is a curious person, who worries about nothing. Advertising slogan of Arbor Day

1. There are thousands of poplars in the village, so it is not necessary to beat firewood.

2. It takes a busy day to plant trees, and the benefits will last for a hundred years.

3. Life is green, and hope is green.

4. plant more trees, afforest widely, and raise trees now, and trees will raise people in the future.

5. Sow a seed today; Tomorrow, the harvest will be green.

6, more green leaves, more warmth.

7. Trees are planted all over the country, and everyone cares for the earth.

8. Take part in the green action to cover the beautiful home.

9. Trees are planted with little shade.

1. There are no trees on the mountain, so the crops can't be saved.

11. Giving birth to children depends on education, and planting trees depends on tending.

12. Say goodbye to the hustle and bustle of the city and embrace the green.

13, afforestation, greening Yongjiang land; Plant flowers and grass to decorate Xiongzhen's home.

14. If you want a cornucopia, the barren hills will become green forests.

15, you give a little green, I give a little green to make green the main theme of life.

16. One tree, two trees and three trees all become pillars.

17. Afforestation is beneficial for today, and its contribution will be in the future.

18. The predecessors planted trees, while the descendants enjoyed the cool, leaving room for sustainable development for future generations.

19, afforestation should be appropriate, seasonal soil should be adjusted.

2. Planting trees should be 365 instead of 312.