Abstract:

This paper took Tongliang in Chongqing as the object of study and three phases of TM/ETM+ remote sensing images as the prime data sources. On the basis of large amount of data,there were two steps we took to start this research.Firstly,the land use parterns of Tongliang County from 1993 to 2007 were studied by the theory of landscape ecology.Secondly,the LUCC process and the convertion amounts between each kinds of land use were analyzed by Markov model and the tendencies in the following years were forecasted.The research results manifested that the landscape's shape in Tongliang during 1993 to 2007 tended to be complicated,patch fragmentation reduced,sight heterogeneity decreased,and landscape type appeared the tendency of the simplification and the nonequilibrium.Forestland decreased apparently while urban construction land increased sharply.Reduced forestland was mainly converted into orchard land and arable land while increased construction land mainly came from orchard land and arable land.Investigation indicates that combining landscape indices with Markov model to study the LUCC could contribute to analyse the pattern and process of the land use,and achieve preferable results.