The effect of the temperature of the surface of vegetation to the temperature of an urban area

The effect of the temperature of the surface of vegetation to the temperature of an urban area

Urban areas have less vegetation than their surrounding natural environments. Differences between these types of areas affects climate, energy use, and habitats in the cities. In urban areas, dark surfaces and reduced vegetation affects the warmth of air over urban areas, and as a result leading to the creation of urban heat islands. Urban vegetation can have a substantial effect on urban air temperature and as a result can reduce the energy consumption arising from cooling and smog. To estimate the impact of light-colored surfaces and urban vegetation (trees, grass, shrubs and groundcover) on meteorology and air quality of a city, it is essential to accurately characterize various urban surfaces. The characterization of the areas with various vegetation cover has significant importance in understanding the temperature of urban areas. Plants are essential in a dense urban environment not only because of their aesthetic value, but also for their cooling effect during hot time periods, which has a direct effect to the local microclimate of an area. The benefits obtained from plants to the urban environment can either be direct or indirect. For example, trees have an ability to trap sunlight before it warms the ground, they also have an ability to cool their surroundings through evapotranspiration. Not only that but trees can also act as wind barriers by reducing the wind speed of their neighboring surroundings, they can protect buildings from cold winter breezes and they can offer reasonable benefits through reducing the costs of air-conditioning through lowering air temperature and improving the urban air quality by reducing air pollution.Some trees cope better with high urban temperatures than others. The resolution of the presented urban surface temperature data for the first time allows to determine mean canopy temperatures of individual vegetation belonging to different species. Leaf temperature is the outcome of the energy balance at leaf level, which depends on a series of anatomical, physical and biological phenomena. The resulting leaf temperature, foliage temperature has important consequences for the plant itself, but also for the environment surrounding the plant. Landscape planners have recognized the link between greenspace provision in the urban environment and environmental quality for a long time. There is a growing need of analytical work on the beneficial impacts of urban greenspace on micro-climates and as well as biodiversity. Previous studies have shown that land uses have their own distinctive surface cover.  This study contributes a method and tools for analyzing, understanding, planning, and managing urban environments. It is important especially when considering the ever increasing interest of having green infrastructural planning. The study has been conducted in Erzurum though the application of a thermal camera. 

___

  • Aguiar A., K. French, L. A. Chisholm, 2014. A comparison of the ameliorating effects of native and exotic street trees on surface heat retention at dusk, Urban Climate, 10(1):56-62Akbari H., M. Pomerantz and H. Taha 2001. Cool Surfaces And Shade Trees To Reduce Energy Use And Improve Aır Qualıty In Urban Areas. Solar Energy. 70(3): 295–310
International Journal of Multidisciplinary Studies and Innovative Technologies-Cover
  • ISSN: 2602-4888
  • Yayın Aralığı: Yılda 2 Sayı
  • Başlangıç: 2017
  • Yayıncı: SET Teknoloji