Heat energy exchange is very important processes in the coastal wetland ecosystems. We observed and
analyzed the net radiation flux, the sensible heat flux, the latent heat flux and the soil heat flux, which are
balanced in the heat energy balance, over a reclaimed land covered with reeds at Goheung, Jeonllanamdo where is
horizontally plane. The atmospheric turbulence had been measured in order to estimate the heat transfer during 5
intensive observation periods (IOPs). It was considered that the soil consists of water, fine particles, and vegetation
canopy that changes color and density according to the season. We examined the characteristics of the heat flux and
the vegetation effect on the air temperature control. It was noted that the heat was transported mainly by latent heat
flux in the summer season and the vegetation canopy decreased the daily temperature range due to the heat storage.
The air temperature was lower at the IOPs site than near urban area. This showed that the coastal wetland covered
with the vegetation control the thermal environment.