Estimation of Aboveground Biomass of Phyllostachys praecox Forest Based on Landsat Thematic Mapper Image Landscape structure of the farming-pastoral zone based on Landsat-TM Data-A case study of Xinghe County, Inner Mongolia Estimating Forest Biomass in Western Guangdong Using Landsat TM Data A PRELIMINARY STUDY ON REMOTE SENSING DETECTION OF DAMAGE BY PINE CATERPILLAR