• Journal of Environmental Science International
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• v.14 no.4
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• pp.379-387
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• 2005

This study aims to establish the schematic plan for renewing canopied landscape of Garosoo-gil of Chongju and to review to conserving the resources of streetscape of the Garosoo-gil. The study reinterpreted the Garosoo-gil of tree canopied road, representing meanings and functions of the road with main traffics as well as the image of Chongju city achieved buffer zone for open spaces to city green network. The study relied on the present composition, the status of road trees and streetscapes; additionally, the present streets cape was performed with examinations of those factors, the composition of roadscape, the change of structure according to visitor's movement and road construction condition, which was composed with focused places on concerning the loss and demolition of trees by Garosoo-gil. According to the result, the streetscape could be prospected to decreasing the number of trees and changing the sceneries of streetscape. As a result, the dominant canopied streetscape was found three areas. The analysis could help to find a way to establish the schematic plan for making the streets cape be symbolized and take place identified and better festival events with greens. The study could not only suggest the place of the streetscape to be divided into conservation area and protection area, for tree canopy but also establish alternatives for making the Garosoo-gil be a beautiful street park and enduring for a better landscape of main entrance road.

• Journal of the Korean Institute of Landscape Architecture
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• v.42 no.6
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• pp.21-30
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• 2014

The purpose of this study was to evaluate human thermal comfort in summer by the type of greenery in parks and to explore planning solutions to supply a comfortable thermal environment in parks. The research was conducted in three different land cover types: a park with multi-wide-canopied trees(WOODLAND), park with grass(LAWN) and park with pavement(PAV) as reference sites in Hamyang-Gun SangrimPark. Field measurements of air temperature, relative humidity and wind velocity, short-wave and long-wave radiation from six directions(east, west, north, south, upward and downward) were carried out in the summer of 2014(August 21-23 and 29-30). Mean Radiant Temperature($T_{mrt}$) absorbed by a human-biometeorological reference person was estimated from integral radiation and the calculation of angular factors. The thermal comfort index PET was calculated by Rayman software, UTCI, OUT_SET$^*$ were calculated using the UTCI Calculator and the Thermal Comfort Calculator of Richard DeDear. The results showed that the WOODLAND has the maximum cooling effect during daytime, reduced air temperatures/$T_{mrt}$ by up to $5.9^{\circ}C/35^{\circ}C$ compared to PAV and lowered heat stress values despite increasing relative humidity values and decreasing wind velocity. While the LAWN had very slight cooling effects during daytime, reduced air temperatures/$T_{mrt}$ by up to $0.9^{\circ}C/3^{\circ}C$ compared to PAV, the improvement effects of the thermal comfort index was very slight. However, during nighttime the microclimatic and radiant conditions of WOODLAND, LAWN, and PAV were similar owing to the absence of solar radiation, reduction of wind velocity and an increase in relative humidity. Because the shading and evapotranspiration effects of the WOODLAND were much greater than the evapotranspiration effects of the LAWN, it can be said that the solutions for supplying comfortable thermal environment in parks are to amplify the green volumes rather than green areas. This study was undertaken to evaluate the human thermal comfort in summer of WOODLAND/LAWN parks and to determine the improvement effects of thermal comfort index. These results can contribute to the provision better thermal comfort for park users during park planning.