Abstract:

This paper studied the changes of land use and analyzed the economic data in the coastal zone of Jiangsu Prorince in the past 13 years.The results showed that the coastal zone of Lianyungang was mainly constructed with farmland，other builtup area and rural residential area，which accounted for 81%，and had a high development degree.The number of patches increased year by year，and landscape fragmentation augmented.The coastal zone of Yancheng was principally composed of farmland，grassland and other builtup area，which occupied 7745%，and had a moderate development degree.The habitats which were suitable for biodiversity conservation are reducing，with the area of artificial landscape increasing，such as farmland and reservoir and pond.The coastal zone of Nantong was consisted of farmland and tidal flat，which occupied 8893% and having area reduction，and the area of artificial landscape increased.The pressure of population growth，the orientation of government policy and the drive of social economy are the main driving forces on the landscape pattern change in the coastal zone of three coastal cities of Jiangsu.In the coastal zone of Lianyungang population density increased by 138%，secondary industry output value increased by 77 times.And the coastal zone had significant fragmentation due to the disturbance of human activities.Per capita GDP in the coastal zone of Yancheng increased by 4 times.Driven by economic interests，Yancheng lost large areas of grassland.And the coastal zone suffered further destruction.In the coastal zone of Nantong population density decreased by 20%，and per capita GDP increased by 53 times.The main development of tertiary industry had less interference on the coastal zone，so there was a relatively low degree of landscape fragmentation to the zone.〖