城市林业一词,60年代初首先出现于美国,70年代后流行全世界,而今它已成为林业科学的一个重要分支。 城市环境不同于林区,与乡村也有显著差别。城市地表大部分覆盖着混凝土、柏油、石头、砖瓦和金属,这些材料极易吸收和反射太阳辐射热,加上市民的新陈代谢活动和经济活动所产生的 The term urban forestry, first appearing in the United States in the early 1960s and prevalent in the world after the 1970s, has now become an important branch of forestry science. Urban environment is different from the forest area, and rural areas are also significantly different. Most of the city’s surface is covered with concrete, asphalt, stones, bricks and metal, which easily absorb and reflect solar radiation heat, together with the public’s metabolism and economic activities