Analysis of sapling density regeneration in Yellowstone National Park with hyperspectral remote sensing data

► AVIRIS imagery was used to map post-fire sapling density (SD) in Yellowstone. ► Regression analysis was applied with high prediction accuracy (R2 = 0.88) for SD. ► The ecosystem-level clumpiness index showed shifts in aggregation of SD classes. ► A decrease in estimated SD of nearly 50% was observed between 1998 and 2007.