EXPLORING THE EFFECT OF FIRE REGIME TO FOREST DYNAMICS USING LANDIS-II MODEL IN MOUNT PAPANDAYAN

• Main Author: Karlisa Dewi, Intan
• Format: Final Project
• Language: Indonesia
• Subjects: Ilmu hayati ; Biologi
• Online Access: https://digilib.itb.ac.id/gdl/view/61352
• Institution: Institut Teknologi Bandung

Fire is a type of disturbance that often occurs in forests throughout the world, including the tropics. Forest fires show a pattern of variations in behavior and fire characteristic which is often called a fire regime. Fire regimes have a strong influence on the formation of ecosystem structure, function, and landscape heterogeneity. Therefore, the purpose of this study is to examine the impact of fires with fire regime variations on forest dynamics using the LANDIS-II model with the study location in Mount Papandayan forest area. LANDIS-II is a process-based model that has key characters of being spatially explicit, stochastic, and raster data-based. Specifically, the modules in LANDIS-II that are used to simulate fires and their vegetation response are the biomass succession and base-fire module. The exploration is carried out by comparing three simulation scenarios, namely no disturbance, high fire scenario with 200 years of fire rotation period (FRP) (landscape conditions often experience fires), and low fire scenarios with 600 years of FRP (landscape conditions rarely experience fires). The simulated forest community consist of 11 tree species that is grouped into 3 Plant Functional Types (PFT), namely climax, intermediate, and pioneer. The results show that the total decrease of Above Ground Biomass (AGB) reached an average of 1326.36 g m-2 (3.7% of undisturbed conditions) in the high fire scenario and 660.4 g m-2 (2.3% of the undisturbed condition) in the low fire scenario. In addition, the low fire scenario provides a larger change of biomass proportion compared to high fire. In general, the fire caused an increase in the biomass proportion of pioneer and intermediate, while the biomass proportion of climax decreased.