Shanghai Urban Expansion and Land Use Change around City

Based on MSS\TM\ETM+ remote sensing images,the study monitored Shanghai urban expansion and the land use change around city between 1975 and 2004.The results are as follows: during 29 years,Shanghai city's built-up area increases continually,but the increase velocity is not balanced in different monitored periods.From 2001 to 2004,the increase velocity is highest of all.The main expansion direction of Shanghai urban is different.The entire characteristic is that,to the district of Huangpujiang's west,the city expanded along the traffic artery;to the district of Huangpujiang's east the city expanded to the core function area.During Shanghai urban expansion,the farmland is occupied most,country dwelling land and other construction land is secondary and other land is least.