Arbor Day handwritten newspaper picture information

March 12 is our country’s own tree planting festival, and this day is also the anniversary of Sun Yat-sen’s death. Below are pictures of the Arbor Day handwritten newspaper materials compiled for you. Hope you like it! Arbor Day handwritten newspaper picture information 1

The origin of Arbor Day

March 12 is our country’s own tree planting festival, and this day is also the anniversary of the death of Sun Yat-sen. Dr. Sun Yat-sen attached great importance to forestry construction during his lifetime. When he was the interim president of the Republic of China, he established the Ministry of Agriculture and Forestry, with the Forestry Department under it, in charge of national forestry administrative affairs. In November 1914, the first "Forest Law" in my country's modern history was promulgated. In July 1915, the government stipulated that the annual "Qingming Festival" should be designated as Arbor Day.

In February 1979, the Sixth Meeting of the Standing Committee of the Fifth National People’s Congress passed a resolution to designate March 12 as my country’s Arbor Day. The significance of this resolution was to mobilize People of all ethnic groups across the country are actively planting trees and afforestation, accelerating the pace of greening the motherland and various forestry constructions. The date of Dr. Sun Yat-sen’s death is designated as my country’s Arbor Day to commemorate Dr. Sun Yat-sen’s great achievements and symbolize that Dr. Sun Yat-sen’s last wish that could not be realized during his lifetime will be realized in New China and will be realized even better. Picture information of Arbor Day handwritten newspaper 2

The significance of Arbor Day 1

Afforestation can not only green and beautify homes, but also expand mountain forest resources, prevent soil erosion, and protect It is a grand project that benefits the present generation and future generations. In order to protect forestry resources, beautify the environment and maintain ecological balance, many countries in the world have established Arbor Day based on their actual conditions. As people's awareness of environmental protection continues to increase and they actively participate in afforestation activities, the environment in which we humans live will continue to improve.

The significance of Arbor Day 2

Afforestation can not only green and beautify homes, but also expand forest resources, prevent soil erosion, protect farmland, regulate climate, and promote economic development. It is a grand project that benefits the present generation and future generations. In order to protect forestry resources, beautify the environment and maintain ecological balance, many countries in the world have established Arbor Day based on their actual conditions. As people's awareness of environmental protection continues to increase and they actively participate in afforestation activities, the environment in which we humans live will continue to improve.

Some foreign scholars have calculated the ecological value of trees: a 50-year-old tree produces oxygen worth about US$31,200; absorbing toxic gases and preventing air pollution is worth about US$62,500; increasing soil value Fertility is worth approximately $31,200; water conservation is worth $37,500; providing breeding grounds for birds and other animals is worth $31,250; and protein production is worth $2,500. Excluding the value of flowers, fruits and wood, the total value is approximately US$196,000.

Regardless of whether this calculation is accurate, in terms of the practical value of trees, it is indeed obvious.

A tree can produce 200 kilograms of pulp, and if this pulp is to be produced into toilet paper, it will require at least 750 rolls of toilet paper weighing 100 grams.

In the city, a tree can store the pollutants emitted by a car traveling 16 kilometers a year. Many trees can absorb harmful gases. For example, one hectare of cedar forest can absorb 60 kilograms of sulfur dioxide per day. Others, such as ailanthus, oleander, ginkgo, and sycamore, can absorb sulfur dioxide. When the urban green area reaches more than 50%, pollutants in the atmosphere can be effectively controlled.

Urban forests can increase air humidity. An adult tree can evaporate 400 kilograms of water a day, so the air humidity in the forest increases significantly. It is calculated that for every increase in urban green space area by 1, the local summer temperature can decrease by 0.1 degrees Celsius.

Urban forest belts and hedges can reduce noise. A 30-meter-wide forest belt can reduce noise by 6 to 8 decibels.

There are 3.5 bacteria per cubic meter of atmosphere in forested areas, and the number can reach 34,000 in densely populated cities lacking greenery. Urban streets with trees contain about 80% less pathogenic bacteria in the atmosphere than urban streets without trees.

Urban protective forest has the effect of slowing down the wind speed. Its effective range is within 40 times of the tree height, of which the best effect is within the range of 10 to 20 times, which can reduce the wind speed by 50.

The farmland forest network can usually slow down the wind speed by 30 to 40 degrees, increase the relative humidity by 5 to 15 degrees, and increase the soil moisture content by 10 to 20 degrees. According to measurements, the forest canopy can intercept precipitation by about 20 degrees, greatly weakening the impact of raindrops; as long as 1 centimeter on the surface Thick litter can reduce surface runoff to less than 1/4 of bare land, and reduce sediment to less than 7% of bare land.

One hectare of forest land can store at least 3,000 cubic meters more water than bare land. The water storage capacity of 10,000 acres of forest is equivalent to a reservoir with a storage capacity of 1 million cubic meters, and building such a reservoir requires an investment of more than 10 million yuan.

Some experts predict that if forests are lost on the earth, about 4.5 million biological species will cease to exist, and 90% of the fresh water on land will flow into the sea in vain, and humans will face serious water shortages. The loss of forests has increased wind speeds in many areas by 60 to 80 degrees, and hundreds of millions of people have died due to wind disasters?

The significance of Arbor Day 3

In spring, when everything revives, it is tree planting The golden season for afforestation. Afforestation can not only beautify the environment and improve air quality, but also improve climate conditions. It can be said to serve multiple purposes. The dense canopy can cover the sunlight, reflecting about 20% of the heat back to the sky, and 60 to 70% of the heat is absorbed by the canopy. In addition, maintaining plant transpiration also requires the absorption of a large amount of heat. Because the air humidity in the woods is high, the heat capacity is large, and the wind is small, the temperature changes relatively slowly.

According to observations, the temperature in places with forests in summer is 8.9°C lower than in places without forests, while in winter it is 2.3°C higher. It can be said to be "warm in winter and cool in summer." In addition, forests can regulate air humidity. The forest's air conditioning effect is accomplished through the continuous transpiration of the tree canopy. In the dry season, the huge root system of trees absorbs a large amount of water from the soil and transports it to the atmosphere through the leaves, increasing the air humidity and mitigating the degree of drought. According to measurements, the relative humidity in forested areas is 30 to 40 degrees higher in summer than in areas without forests, and can be about 10 degrees higher in winter.

Forests are both nature’s air conditioners and nature’s humidifiers, making a great contribution to improving air quality. When the forest coverage reaches more than 35%, a climate suitable for human life can be produced. According to scientists' estimates, each hectare of poplar trees transpires 57 tons of water per day in summer and consumes 180,000 megajoules of heat; each hectare of broad-leaved forest absorbs 575 tons of groundwater from the soil in a year, consuming 12,500 megajoules of heat. The transpiration of water is 50 times more than that of the ocean at the same latitude, and 20 times that of forest-free areas. In addition, the forest is a haven of nature. After the wind encounters the forest, part of the airflow passes over the sky, and part of the airflow is blocked by trees. The wind force drops sharply. When it reaches 200 meters in the forest area, the wind speed is generally only about 5% of the original value, thus greatly reducing the wind disaster.

The national voluntary tree planting movement is a great cause that benefits the people. Over the years, the vigorous development of the national voluntary tree planting movement has played an important role in raising the national awareness of greening, accelerating the construction of green land and ecological environment, and promoting economic development and social civilization and progress.

Afforestation is a great thing to create a good ecological environment and benefit future generations. Participating in tree planting is not only an obligation, but also a responsibility. The whole society should actively take action to plant trees and green them. Home, make the land we live on greener and more beautiful. Arbor Day Slogans

1. On Arbor Day on March 12, everyone comes to plant small trees, one, two, three or four. After planting, fertilize the small trees to become big trees. Everyone Come and take action, greening the earth depends on everyone.

2. One more green leaf, one more warmth.

3. Planting trees is in the present generation, and it is appropriate to plant trees in the next generation.

4. Trees are planted one by one, and the green trees are dotted with shade.

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

6. Thousands of forests and mountains are a true treasure house; vast hectares of green sea are a living bank.

7. Plant trees to provide shade every year, and create forests from generation to generation.

8. The Great Wall resists foreign enemies, and the Green Great Wall benefits mankind.

9. A forest of two trees dyes the mountains and rivers, but a single seedling, although green, can withstand the wind and sand.

10. Plant more trees and afforestation widely. People are raising trees now, and trees will be raising people in the future.