植树造林,美化和改善生态环境,已成为世界各国共同关心的话题.为鼓励和提倡植树造林,许多国家都有自己的植树节.植树节于1872年首创于美国,继美国之后,世界各国相继仿效.目前世界上有50多个国家都规定有本国的植树节.1952年,联合国粮农组织作出建立“世界植树节”的决议. Afforestation, landscaping and improving the ecological environment has become a common topic of concern to all countries in the world.In order to encourage and promote afforestation, many countries have their own Arbor Day. Arbor Day was first established in the United States in 1872, following the United States, the world has been Nowadays, more than 50 countries in the world have set their own Arbor Day. In 1952, the UN Food and Agriculture Organization (FAO) made a resolution to establish “Arbor World Day.”