Abstract
An experimental study of the microclimatic role of agricultural land use in the area of confused land use is presented. The observed results are as fallows: (1) Air temperature was lowest at the top of the densely vegetated rice canopy and the profile was reversed above the paddy in the afternoon on clear and relatively hot day. It was verified experimentally that the rice canopy acted as a sink of heat, which was effective about 140 cm above the canopy surface and more than 40 m downwind. (2) In the daytime on another clear day, the rice canopy acted not as a sink of heat but as a source of cool, affecting about 140 cm above the canopy surface and 10∼20 m downwind. (3) Advection effect was observed in the small agricultural lands.
