Arbor Day is a festival to publicize and protect trees in accordance with laws and regulations, and organize and mobilize people to actively participate in afforestation activities. According to the length of time, it can be divided into Tree Planting Day, Tree Planting Week and Tree Planting Month, which are collectively called International Tree Planting Day. It is advocated to stimulate people's enthusiasm for afforestation and realize the importance of environmental protection through such activities.
China's Arbor Day was proposed by Ling Daoyang, Han An, Pei Yili and other foresters in 1915, and was initially scheduled for the annual Qingming Festival. In 1928, the National Government changed the Arbor Day to March 12 to commemorate the third anniversary of Sun Yat sen's death. In 1979, after the founding of New China, under the proposal of Deng Xiaoping, the sixth meeting of the Standing Committee of the Fifth National People's Congress decided to designate March 12 every year as the Arbor Day.
