And car exhaust, people gradually forget the fresh air with the smell of earth and grass. However, walking on the green streets of forest cities and looking up at the sky, the sky is high and the clouds are light; Looking at the distance, everything is green; Breathing with your mouth open is refreshing. It seems that people live in a "forest city" in a "natural oxygen bar".
Urban forest is rich in connotation. From the definition of urban forest at home and abroad, it has not only referred to the Woods in the general sense. In a narrow sense, various green belts dominated by trees in cities, such as forest belts and scattered trees, constitute the main body of urban forests; Broadly speaking, urban forest, as an ecosystem, is mainly composed of various woodlands, including urban waters, orchards, grasslands, nurseries and other components, which are closely related to urban landscape construction, park management and urban planning. Therefore, the construction of urban forest should not only attach importance to the traditional forest with a certain area of trees, but also ignore the role of individual trees.
Experts pointed out that China should pay attention to three changes in urban greening construction: from focusing on visual effects to giving consideration to visual and ecological functions; From paying attention to increasing the area of green construction land to improving the efficiency of land space utilization; From focusing on the internal greening and beautification of the built-up area to establishing an urban forest ecosystem integrating urban and rural areas.