Landsat based peak NDVI image Year 2008 Tile 4 Jiapeng Qu Fabian Ewald fassnacht Christopher Schiller Teja Kattenborn Xinquan Zhao 10.6084/m9.figshare.7737341 https://springernature.figshare.com/articles/dataset/Landsat_based_peak_NDVI_image_Year_2008_Tile_4/7737341 Landsat based peak NDVI image Year 2008 Tile 4 2019-05-20 10:36:01 Tibetan Plateau grassland LANDSAT Grassland trends ndvi-difference MODIS Mann-Kendall trend test