Green Spaces and their Impact on Microclimate

In addition, trees are a very good feature of blocking hot sunlight by forming shadowed areas on the wall. As a result, the need for summer artificial cooling system and winter heating system will be reduced. (Gabriel Pérez 2011) According to another survey in Hong Kong, the variation in temperature is reduced by up to 50% per day, depending on the number and type of plants, the strong solar protection is between 40% and 80%. A study of the shadow effect showed that the green system reduces the energy for cooling by about 23% and reduces the energy used by the fan by about 20%.

Despite global warming issues research has shown that green open spaces may be one of the solutions to this problem. Green spaces affect microclimate. Trees and planting can lower the maximum summer temperature by 5 ° C. As a result, by including trees as much as possible in the landscape design of the streets of the city, it is possible to provide shade and coolness, thereby reducing global warming (The City of London, 2009). From the above, it turns out that it is important to discuss urban design and urban planning.

Citizens rely too much on cars, so these ancient inventions have too much land. The environment lost green spaces and public plazas to highways and parking lots. The latter affects the microclimate of the city. Asphalt absorbs solar energy and uncomfortable summer temperatures in the city center

In addition to providing city residents with the experience of the building environment, urban and environmental scholars believe that access to greenery is a matter of environmental justice as it has a positive impact on health and quality of life. The lush landscape can also be used as a microclimate to reduce urban heating in densely populated areas. However, although the term "green" in the city is often related to sustainability, it is not always the case in the desert where excessive water is required for irrigation to maintain the green space.

Green maps are used for landscape pattern analysis. Nanchang city green area system plan drawing, urban traffic arrangement map and urban transport planning drawing (2003-2020) were also used. Green spaces are classified into two types: natural greenery and cultivated land. The ecologically green area, the landscape forest area, the waterfront green area, the green area are integrated into the natural green area. Since then, public green spaces, greens, greens, gardens, green spaces associated with the workplace, and other green spaces have been integrated into cultivated green spaces. Natural greenery is defined as the land that is designated as a semi-natural plant community of mainly open, undeveloped state, mainly vegetation and cultivated land of forested areas and semi-natural mountains.