Abstract:

Urban areas are the hotspot of land use change research in regional scale.Based on the aerial remote sensing images of Shanghai city in 1994,2000,2003 and 2006,combined with GIS method and the analysis model of land use change,we have studied spatial and temporal variation characteristics of land use in Shanghai city during 1994-2006.The result shows that during this period,the comprehensive dynamic index of land use was 207%.Farmland reduced 94 00772 hm2 with a drop of 233%,74 825.86 hm2 of which had been designated for industrial land,traffic land,residential and public facility land.In order to improve the environment,the area of green land increased 9 292.41 hm2,most of which had been transformed from farmland and residential and public facility land.Therefore,it is the main characteristics of land use change in Shanghai city that the expansion of the urban construction land occupying vast area of farmland and green land has increased greatly.The land use changed differently among the districts in Shanghai city,and the comprehensive dynamic index of land use of Pudong new district was the highest;and that of Chongming county was the lowest,showing obvious decline trend along urban centersuburb to exurb gradient.The spatial difference of land use change was closely related to location condition,economic development status and policy of each district.On the whole,social economic factors were the major driving force influencing LUCC in Shanghai city,including population distribution and growth,economic growth,the improvement of people's living standard,policy and launching large international events, et al