The area of the plane distribution of the temperature anomaly field of urban heat island of Guilin city has been determined through the comprehensive processing and analysis of the image information of the heat infrared band

the near infrared band and the visible light band of TM. On this basis

it is discovered that a special effect

karst heat corrosion subsidence on the whole ground of the city caused ty the urban heat island effect on Guilin located in the special karst environment through combining the data of the limestone corrosion under the soil layer in the test karst hydrogeologic field in Yaji village and the data of the urban air temperature in Guilin observed in the past ten years from 1987 to 1996. Study shows that the karst heat corrosion subsidence of the whole urban area is a very slow and concealed interaction process between human and the earth

it is difficult to detect only in the dependence on the methods of traditional and local observation on the earth’s surface. But at least

three types of effects on the urban environments can be qualitatively prognosticated from a long-term point of view. The first

the whole foundation of city has to slightly subside with the result of the subsidence of the whole buildings. The subsiding range is less than or equal to the vertical range of the heat corrosion. Because of the small subsiding range

it usually can’t destroy the buildings. But it may bring about a certain effect on these buildings located in some special positions of corrosion and having precise mosaic texture in the horizontal direction. The second

the thickness of the Quaternary System within the urban region has to increase. The third

it will be possible to cause the karst collapses or the faults on the ground

if a certain original and stable natural support texture of the bedrock is destroyed by the heat corrosion subsidence. For evaluating these effects

a dynamic model of karst heat corrosion subsidence and a development and evolution conceptual model of the whole ground of Guilin have been put forward. $h$

the dynamic depth of the overburden of the underlying Quaternary System under the urban mat in the process of the heat corrosion subsidence

$v$

the velocity of the heat corrosion subsidence and $t$

the necessary time for subsiding to a predetermined depth can be quantitatively calculated by using the dynamic model. And the three developing stages of the karst heat corrosion subsidence of the whole urban area of Guilin can be audio—visually shown by using the development and evolution conceptual model. Thus

it provides a theoretical and technological basis for setting up the system of the quantitative analysis and prognostication of the heat corrosion subsidence of the whole urban area of Guilin and revealing the temporal and spatial locus of the heat corrosion subsidence of the whole urban area of Guilin.