Analysis of landscape sustainability in Hulunbeir Forest-Steppe ecotone

Based on the TM date of 1988,1995,2000 and 2004,the information of landscape pattern in Hulunbeir forest-steppe ecotone was obtained by using the integrated techniques of Remote Sensing(RS) and Geographic Information System(GIS).Aimed at measuring the spatial-temporal dynamics of landscape pattern in the study area,this paper analyzed the changes of sustainability index of landscape characters on different temporal scales.The results showed that the sustainability index of landscape diversity and fractal dimension increased,meanwhile,the sustainability index of landscape dominance decreased on the landscape scale.The landscape at Hulunbeir Forest-Steppe ecotone tended to be more fragmented and complicated.And,on the type scale,the sustainability index of patch fractal dimension,shape and division has increased obviously in forest,grassland,cultivated land and unused land.The patch of main landscape types tended to be more anomalous and dispersed.