论城市热岛效应的地貌成因

ON GEOMORPHOLOGICAL CONTRIBUTION TO URBAN "HEAT ISL AND"

The urban landform effects in reflection, evapotranspiration and storage heat form are analysed in this paper in view of energy balance. According to detail field data, following results are demonstrated. "Honeycomb" structure of urban anthropogenic landforms is a key influence factor of surface reflection; the "double layer" structure consisting of surface anthropogenic material and subsurface natural substrate is the important storage heat structure of urban landform; urban vertical walls and urban "canyon" composing of flanking walls, not only decrease level dismission, but also increase exchanging heat flux. Urban landform plays a important role in contributing to urban "Heat Island".