INVESTIGATION OF URBAN OPEN AREAS TO PERMEABLE GROUND: EXAMPLE OF TRABZON CITY CENTRE

Abstract

Urban light green areas, which are defined as natural areas, reveal the physical structure of the city, reflect the identity of the
city and shape the city. Starting from the 1950s, with the developing industrialization process and population increase, the
usage possibilities of the cities have changed. This situation led to a decrease in the open green areas as a result of the
urbanization tendency of the citizens, who tend to socialize more. However, the decrease in the light green areas caused both
the natural cycle change and the water cycle in the city. With the change of climate, the traditional rain collection systems of
urban rainwater are not sufficient and sudden rains and floods and flood risks have begun to be encountered. The best solution
for this situation is to integrate permeable surfaces into urban systems when making urban design decisions. In this study, the permeability of urban open spaces was investigated. The permeability rates in Trabzon city center were
determined with good satellite imagery and coating ratios were calculated. Trabzon city center is taken into consideration and
the permeability level of approximately 1,531,845 km2 is calculated by using high-resolution satellite images. When the ratios
in the area boundaries were examined, it was determined that it had a permeable surface of 17.24% and an impermeable surface
coating of 82.76%.