Abstract:

In order to investigate land resource change in coastal regions and provide basic data for ecological environment protection, the authors took the Yancheng city as an example and interpreted TM images of 1992 and 2002 by supervised classification using maximum likelihood method. GIS technology was employed to analyze land use change spatio-temporal characteristics. And dynamic degree model was applied to describe the change rate of each land use type. The driving factors of land use change were extracted based on the statistical data. The results showed that farmland and tidal flat had the largest decreasing magnitude. Farmland mainly transferred to woodland, water, construction land and garden plot. Tidal flat was transferred to water body, like salt pan and shrimp pond. Construction land had the largest increasing magnitude and velocity, which mainly diverted from farmland. Population expansion, government planning and urbanization can be viewed as the main driving factors of land use change in the study area. Land use change style in the Yancheng city was harmful to regional sustainable development and was dangerous to wild animals’ survival. It was necessary to launch macro-control and scientific management.