The Chinese Arbor Day is scheduled on March 12 every year. It is a festival established by legislation in China to stimulate people's enthusiasm for afforestation and afforestation, promote land afforestation, and protect the ecological environment on which human beings depend. In 1915, China established the Ching Ming Festival as the Arbor Day. It was originally established by the forest scientist Ling Daoyang, and then changed the Arbor Day to March 12, the day of Sun Yat-sen's death in 1928, to commemorate the afforestation wish of the revolutionary pioneer. This setting has been used by mainland China and Taiwan until now. The national voluntary tree planting activities have been implemented for many years, and people all over the country have conscientiously fulfilled their civic tree planting obligations. As of 2008, the number of voluntary tree planters in Mainland China has reached 10.4 billion, with a total of 49.2 billion voluntary trees lanted
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In cities, street trees can also make beneficial contributions to human society. A tree can store the pollutants emitted by a car driving 16 kilometers a year. Many trees can absorb harmful gases. For example, 1 hectare of cedar forest can absorb 60 kilograms of sulfur dioxide per day. Others, such as Ailanthus sinensis, oleander, ginkgo, and phoenix trees, all have the function of absorbing sulfur dioxide. In a densely populated city that lacks greenery, there are 34,000 bacteria per cubic meter in the atmosphere, which is 10,000 times that of forests. After a certain number of trees are planted in the city, the amount of bacteria in the atmosphere can be reduced by about 80%. The "urban forest" can increase air humidity. An adult tree can evaporate 400 kilograms of water a day. While increasing the air humidity, it can also reduce the temperature of the city and slow down the heat island effect. Urban forest belts and hedges can reduce noise, and a 30-meter-wide forest belt can reduce noise by 6-8 decibels. Urban shelterbelts have the function of slowing down the wind speed, and its effective range is within 40 times of the tree height, and the wind speed can be reduced by 50% within the range of 10-20 times.
Today, Tree Planting Day has grown into a global movement that unites us to make a positive impact on the environment. Planting trees is just one small part of the broader action needed to tackle the climate crisis, but from restoring native forests to empowering rural smallholders with life-changing sustainable agroforestry trees, we've seen the incredible things we can accomplish. Things happen when we work together for a common cause. No impact is too small, and when enough ordinary people take direct action, it can have an extraordinary impact: changing the world, one tree at a time. From city parks to rural schools, benefiting habitats and communities large and small, we love to inspire people to come together to improve their local environments. Every time we bring together local volunteers to plant a tree, it's sure to be memorable - but every year, we're inspired by something new.
