Digital Terrain Models elevation metrics

Digital Terrain Models (DTMs), Slope, Aspect, Topographic Position Index (TPI), curvature in profile and plan direction and their average, and flow accumulation derived from airborne LiDAR data acquired over the PTPN 6 estate, Batanghari regency, Harapan rainforest protected area, and Sarolangun regency, in Jambi, Sumatra, Indonesia. Slope, aspect, curvatures, flow accumulation and TPI were calculated following a two-step approach where first the DTM was resampled to 10 m pixel size and then the metrics were calculated and further aggregated to 50 m (see also Jucker et al. 2018 https://doi.org/10.1111/gcb.14415). Original pixel size of DTM: 1m. Geographic Coordinate System: EPSG 32748.