On January 6, 1993, the largest forest fire since the establishment of Yushan National Park had occured in the Tataka area, affecting 300 hectares of land. This study was conducted between April 1995 to March 1996, with the east and southeast slopes of Mt. Linjhi as the forest fire experimental site. The focuses of the study were vegetational survey, micro-climate observation,tests of the organic materials in the soil, and pH tests. Results from the vegetation survey showed that Miscanthus transmorrisonensis is the most dominant species in the forest fire zone. Due to canopy thinning and direct sunlight on the forest bed, there is sufficient sunlight under canopies; therefore, heliophyte are the dominant species in such an area. The yearly average effective photosynthetic radiation at the study area was five times greater than the control group. The yearly average temperature and average high and low temperatures were all higher than that of the control group. This is due to canopy thinning and the forest bed receiving large amount of direct sunlight. The surface soil of the forest fire zone had accumulated a large amount of dark carbon reminence, providing it with higher heat absorbance and raising its temperature as well as the yearly average temperature difference. In addition, profuse amount of nutrient were released into the forest from ashes, raising the effective soil nutrient and pH of soil.