Accurate global land cover datasets are key environmental information for research on global changes and regional sustainable development, such as global climate change,ecosystem assessment, biodiversity conservation. However, there are still some shortcomings in showing spatial and thematic details for the existing global land cover products at medium and low resolutions(300-1000 m). Recently, Globe Land30, a global land cover product based on Landsat images at a 30- m resolution, was produced and released...