서울시 주요 공원, 유적지 및 공공기관시설 내 연못 및 호수면적 변화에 따른 LST(Land Surface Temperature) 분포 경향 - 다중시기의 Landsat TM/ETM 위성영상을 이용하여

초록

Purpose: This study was to verify LST (Land Surface Temperature) distribution according to increasing a water-area in various ponds and lakes in Seoul. The LST was retrieved through using multi-temporal Landsat TM/ETM with previous studies. The various ponds and lakes was in parks and public organizations of Seoul. Method: The data of ponds and lakes was used through Seoul Biotope Map (2000, 2005 and 2010) recreated every five-years. The LST in each pond and lake was extracted from retrieved LST. Result: As the water area was increased, the LST was gradually lowered to L-shaped model. The Han River was the lowest LST as around 2 1℃. The water-area LSTs of below 20,000㎡ distributed a large range. Thirty-seven water-areas in twenty-five sites were selected in major parks and public organizations. The LST of a large water-area is less influenced from the temperature of surrounding environment while the LST of a small water-area has a wide deviation because the small water-area is more exposed from it. Therefore effective strategies should be made to mitigate LST around a small water-area as well as increasing a large water-area is important.

키워드