The study explores the recovery from landslides induced by Typhoon Morakot in 2009 in the Tsengwen reservoir watershed. The landslide recovery ratios in the following 2, 5, and 8 years after 2009 reached 80%,83%, and 87%, respectively. The active landslide was concentrated in the area with an elevation of 1750-2000 m, a slope of 35°-55°, and located within 500 m of the rivers. The landslide spatiotemporal hotspots were distributed upstream of the Tsengwen reservoir watershed, particularly in the Chankuchuan, Daban, Daderan, Siding, and Shanmei subwatersheds. The large landslide cases and the involved gullies and rivers occurred over the cluster area of landslide spatiotemporal hotspots and the distributed area of nonrecovered or new landslides.
Key Words: landslide evolution, landslide recovery, landslide spatiotemporal hotspot