1. The Origin and Development of LiDAR Active Remote Sensing Technology 2. Working principle of LiDAR 2.1 Ranging principle of LiDAR 3. Field work flow and system error source of LiDAR 4. LiDAR data format 5. LiDAR data filtering and digital elevation model generation 6. Data Analysis and Feature Extraction of Terrestrial LiDAR 7. Data Analysis and Feature Extraction of Airborne LiDAR 8. Data Analysis and Feature Extraction of Spaceborne LiDAR 9. Forest Structural Parameters Extraction 10. Ecosystem Function Parameters Inversion and Large-scale Simulation 11. Applications of LiDAR in dynamic monitoring of forest ecosystem 12. Applications of LiDAR technology in forest biodiversity, hydrology, and ecological models 13. 3D visualization and reconstruction of vegetation based on LiDAR technology 14. Emerging and ecological application of the near-surface LiDAR platform 15. Challenges and applications of LiDAR