On Oct 31, 2023, a SESS master student Jiang Bohan from the School of Earth System Science of Tianjin University won the first prize in the 15th National GIS Skills Contest for College Students.

This contest is organized by Chinese Society for Geodesy Photogrammetry and Cartography (CSGPC) and China Association for Geospatial Industry and Sciences (CAGIS). Totally, 3 first prizes, 21 second prizes and 61 third prizes were awarded. Notably, one of the first prizes went to the paper titled Long-term spatio-temporal dynamics and driving mechanism of vegetation after forest fire in Northern China, authored by Jiang Bohan, a SESS master student in Geography under the guidance of A/Prof. Chen Wei.

This paper applied quantitative remote sensing method to analyze the vegetation recovery in the Greater Hinggan forested area, over a span of nearly 20 years following a forest fire in 1987. Considering the differences in both internal conditions and external influences on forest vegetation recovery within the burned and unburned zones in the fire-affected area, this paper assessed remote sensing indices used for monitoring. Based on the optimal vegetation index, the study analyzed the spatio-temporal characteristics of forest vegetation in different areas. Furthermore, it employed GD and GWR models to quantitatively identify and spatially map the dominant driving forces influencing forest vegetation growth. This research offers valuable insights into monitoring long-term after-fire forest recovery and serves as a scientific basis and reference for the development of targeted forest protection and management policies.

By School of Earth System Science

Editors: Sun Xiaofang and Jiang Qi