Abstract: The relationship between the change of landscape pattern of desert-oasis and the dynamics of vegetation were discussed by using the mechanism of landscape in this paper.Taking Sangong River Basin as a typical research area and,the paper has studied the evolution of the landscape pattern of desert-oasis.After analyzed the different parameters of landscape pattern,some results were put forward as follows：(1）The main characteristics of landscape pattern is the dynamics of vegetation.It has impact on the vegetation by the changes of topography,water resources using,corridor of river and drainage channel.It was shown the great variability for the height,cover and biomass of vegetation with the change of landscape pattern.(2）Taking the corridor of river as the center,it usually shown a zone distribution from inside to outside for the desert-oasis landscape pattern.And the vegetation types evaluated from the tree-shrub mixed forest,thicket meadow,salinized meadow to desert with the change of the condition of water and heat in the basin.(3）The stability of natural patch is higher than which disturbed by mankind or manmade patch.Usually,the arrange in stability of each patch is：desert > sandy land>urban>pond>paddy field>grass land>vegetable plot>woodland>residential area>saline-alkali land>wasteland>farming land>orchard,apparently.(4）The landscape pattern of desert-oasis in the research area was developed by human activities based on natural oasis,each patch has some different landscape indexes. For the heavy impact on the landscape factors by human activities,which have high values for the indexes of diversity,fragmentation,separation and density,respectively.But for the light impact on the landscape types by human activities,which have high values for the indexes of dominance and evenness.

Key words: Desert-Oasis landscape pattern, vegetation dynamic, coupling relationship, Xinjiang