Earticle

초록

영어

Urban development and population have augmented the increase of impervious land-cover. This phenomenon has amplified the effects of climate change and increasing urban island effects due to increases of urban temperatures. Many researchers, practitioners, and policy makers have attempted to reduce the rise in urban temperatures through the application of multi-scalar green spaces and habitat patches such as parks, street trees, cemeteries, golf courses and botanical gardens. Seoul, South Korea is one of the largest metropolitan cities in the world with a population of about 14 million. While land uses in Seoul vary, land cover patterns have not changed much (under 2%) in the past 10 years, making the city a prime target for studying the effects of land cover types on the urban temperature. This research seeks to generalize the urban temperature of Seoul through a series of statistical tests using multi-temporal remote sensing data focusing on multiple scales and typologies of green space to determine its overall effectiveness in reducing the urban heat. With a focus on urban forests, land cover types were classified into 9 types: water surface, forest, cultivation, green space, unused area, urban infrastructure, road, residential area and commercial area. The average temperature of the urban forests was lower about 0.022°C than of whole land use types. The Land Surface Temperature (LST) values in small-scale urban forests (less than 10,000m2) showed the largest distribution. As size of urban forests increased, distribution of LST values was reduced. It means that changing temperature of large-scale green spaces is less influenced because the broad distribution could be resulted in various external variables such as slope aspect, topographic height and density of planting areas, while small-scale urban forests is more affected from that. The large-scale green spaces contributed significantly to lowering urban temperature by showing a similar mean LST value. Both of concentration and dispersal of urban forests affected the reduction of urban temperature. Therefore, the findings of this research support that creating urban forests in an urban region could reduce urban temperature regardless of the scale.

키워드

저자

• Sung-Ho Kil [ College of Forest and Environmental Science, Kangwon National University ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  강원대학교 산림과학연구소 학술대회

• 간기

  부정기

• 수록기간

  2017~2024

• 십진분류

  KDC 526 DDC 634