Characteristics of Air Temperature Variations under Different Land Covers during Summer

여름철 토지피복별 기온변화 특성

  • 김진수 (충북대학교 지역건설공학과) ;
  • 박종화 (충북대학교 지역건설공학과) ;
  • 정구영 (충북대학교 지역건설공학과) ;
  • 오광영 (충북대학교 농업과학기술연구소)
  • Published : 2007.01.31


We investigated the characteristics of temperature variations under different land covers (paddy field, upland, urban park, and urban residential area) during hot summer (July 15 to August 19, 2005). The temperatures were monitored using data loggers at one hour intervals in study sites. The mean temperature generally increased with the distance from edge of paddy fields, being $1.5^{\circ}C$ higher at a site 170-m far from paddy fields than at a paddy field area at 22 h. The mean daily temperatures in the study period followed the ordo. of paddy field $(26.6^{\circ}C)$ < upland $(27.0^{\circ}C)$ < park $(27.5^{\circ}C)$ < residential area $(28.0^{\circ}C)$. The paddy field area has shown remarkable cooling effects compared to the residential area: Mean duration of temperature below $25^{\circ}C$ in the paddy field area was longer (8.6 hrs) than in the residential area; The time to fall to below $25^{\circ}C$ in the paddy field area was sooner (22.4 hr) than in the residential area; Mean daily minimum temperature in the paddy field area was much lower $(2.4^{\circ}C)$ than in the residential area. More research is needed to better clarify the mechanism of cooling effect of a paddy field area by investigating heat balance of a paddy field.


  1. Yokohari M., R. D. Brown. Y. Kate, and S. Yamamoto, 2001, The cooling effect of paddy fields on summertime air temperature in residential Tokyo, Japan. Landscape and Urban Planning, 53: 17-27
  2. Oke, T. R., 1987, Boundary Layer Climate, 2nd Edition, Metheun, London
  3. Cho, Y. H., and S. Y. Shin, 2002, The effects of urban forest on summer air temperature in Seoul, Korea, J. of Kor. Institute of Landscape Architecture, 30(4) 28-36. (in Korean)
  4. Kim J. U., D. K. Lee, K. S., Oh, and H. C. Sung, 2003. A fundamental study on the relationship between riparian vegetation and surface temperature, J. of Kor. Env. Res. Reveg. Tech., 6(3): 79-85. (in Korea)
  5. Shashua-Bar L., and M. E. Hoffmann, 2000, Vegetation as a climatic component in the design of an urban street: An empirical model for predicting the cooling effect of urban green areas with trees. Energy and Buildings, 31: 221-235
  6. Oue H., H. Tagashira, T. Otsuki, and T. Maruyama 1993, The characteristics of heat balance and temperature regime in the paddy, potato. bare field and the asphalt area, J. of JSIDRE 164: 97-104. (in Japanese)
  7. Morris C. J. G., I. Simmonds, and N. Plummer, 2001, Quantification of influences of wind and cloud on the nocturnal urban heat island of a large city, J. of Applied Meteorology, 40(2): 169-182<0169:QOTIOW>2.0.CO;2
  8. Ministry of Agriculture and Forestry, 2005. Agricultural and Forestry Statistical Yearbook, Korea. (in Korean)
  9. OECD. 2003. Multifunctionality: The Policy Implications