关键词: 居住用地, 空间分异, 扩展强度, 模式, 上海

Abstract: Based on the multi,temporal land use map and SPOT data,modes,intensit y and spa,tial pattern of residential growth of built,up area in Shanghai from 1 947 to 2002 were studied according to the calculated land use intensity index wi th GIS gridding analysis.The results indicate that:(1)Spatial growth of the resi dential area was not increasing continuously with time,the growth intensity,spe ed and the area of all the growth types presented a descending trend from 1947 t o 1979 with the minimal value occurring during 1964～1979,and a gradual ascendin g trend was observed from 1979 to 2002 with the maximal intensity and speed occu rring during 1996～2002,the difference between the maximal and minimal intensiti es was about 100 times.(2)Growth modes of the residential area were distinct in each stage, and showed a "gradual circle growth mode" according to the growth in tensity from the centre to the verge of the built,up area in the initial stages( gradual growth dominated the central built,up area during 1947～1964), an interl aced intensity pattern of "leap growth mode" in the medium stages(from 1964 to 1 988)and an"integrated growth mode"of the foregoing two types from 1988 to 2002(m ixed growth mode consisting of gradual circle and leap growth),thus the urban la nd use functions became more complicated.(3)The growth processes of the resident ial area showed strong difference in each stage,and were influenced by the macro scopic policies and economic development in different periods,which provided abu ndant data and materials for the studies of the urban growth mechanisms.

Key words: residential area, spatial heterogeneity, growth intensity, pattern, Shanghai