Examining changes in the growth competition index of trees caused by typhoon damage using multitemporal airborne lidar scanning data

Typhoon damage refers to the extensive destruction of natural and environmental resources caused by powerful tropical storms, which are characterized by high winds and heavy rainfall. The impacts of these natural disasters on mountainous land and forest resources are severe and far-reaching. From a forest management perspective, common issues resulting from typhoon strikes include uprooted or broken trees, significant soil erosion, and landslides of varying scales across sloped areas. These events lead to substantial changes in the structure of forest stands and the topography of forested regions, resulting in increased vulnerability of forest ecosystems and fragmented land. This fragmentation endangers wildlife habitats and undermines biodiversity conservation. This study analyzes changes in the growth competition index of trees resulting from damage caused by a typhoon in a subtropical forest. We use multitemporal airborne lidar scanning data to assess the impact of severe weather events on stand density and tree growth dynamics over time. By examining variations in the competition index over a decade, we aim to provide valuable insights into the resilience of forest ecosystems after such disturbances. Our research will deepen the understanding of forest recovery processes and inform management practices in areas frequently affected by typhoons.