Abstract:
Based on the TM, ETM+ and ALOS images of 1980-2007, the spatial and temporal dynamics of landscape pattern are analyzed by the class and landscape level landscape index, and the causes of landscape pattern dynamic change are analyzed from natural and human aspects. The results showed that the land use and landscape pattern changed distinctly during 1980—2007; In which, construction land increased year by year with the total increase of 16.23 km2; Cultivated land, forest land, meadow increased first and then decreased, water and unused land decreased first and then increased. Part of the landscape patch density is larger and fluctuated in class level,fractal dimension of grassland, unused land and woodland is larger and fluctuated. Condensation degree from high to low are unused land, arable land, grassland, woodland, water area and construction land. Landscape diversity index showed a trend of decreasing-increasing-decreasing, patch density index and cohesion decreased first and then increased, the fractal dimension index showed a trend of increasing-decreasing-increasing.Population growth and economic development as well as the temperature and precipitation changes resulted in the significant change of landscape pattern.
