Dynamic Changes of Lakeside Landscape Pattern of Dianchi Lake Basin in Recent Sixty Years

By using 1957 and 1972 orthographic aerial images and 2009 high-definition images on Google earth as basic information resource and with the support of GIS,the changes of Dianchi lakeside nearly recent 60 years landscape structure was analyzed through selecting the indices such as patch di-versity,conhesion,diversity and dominance index etc..Meanwhile,the status of transform of lakeside landscape types using Markov model was examined.The result revealed that the changes of lakeside landscape structure was significant from 1957 to 2009,the lake and the wet-land decreased firstly,then increased slightly in recent years,the paddy field and the non-irrigated farmland area decreased,and the construction land area increased,and the lakeside landscape pattern tended to be fragmental,and the distribution of lakeside tended to be even.