Characteristic study on village landscape patterns in Sichuan Basin hilly region based on high resolution IKONOS remote sensing Study of land cover on Nanji Island using IKONOS images and fractal approach Identifying multi-scale spatial patterns of landscape from wavelet and semivariogram analysis of IKONOS PAN remote sensing data Vegetation mapping and spatial pattern analysis using IKONOS data:a case study in the Wufendigou area