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植树造林,是人类用以“调节气候,保持水土,净化空气,防风吸尘,防暑降温,减少噪音的自救武器”。世界各国的政府首脑们都十分重视这一直接有益人类生存的“伟大绿色工程”,并根据本国的地理环境、气候条件和综合国情,选定了最适宜植树的日期作为“植树节”或“植树周”。最早策定植树节的是1872年美国的内布拉斯州。1952年,联合国粮农组织策划掀起了一场“抵制地球荒芜,呼唤营造绿色”的公益活动,并决定设立“世界植树节”,这样一来,各国纷纷响应,世界月月都有植树节。
Afforestation, is used by humans to “adjust the climate, maintain water and soil, clean air, wind and dust, summer cooling, noise reduction self-help weapons.” The heads of government of all countries in the world attach great importance to this “great green project” that is directly beneficial to humankind's survival. According to their own geographical environment, climatic conditions and comprehensive national conditions, the most suitable planting date has been chosen as the “Arbor Day” or “ Tree planting week. ” The earliest decision Arbor Day is the United States in 1872 in Nebraska. In 1952, the Food and Agriculture Organization of the United Nations planned to set off a charity campaign “to resist the desolation of the earth and call for greening” and decided to set up the “World Arbor Day”. As a result, various countries responded and all the world had tree planting day.