Abstract: The Huazang Temple was caught fire in 1972.The mortality of fir trees near the firerelics reached to 94.6%.The ages of died trees were 17—40 years.According to the estima-tion of temperature rise by radiative heating in different distances from the fire centre andan experiment of needle scorching by artificial simulated fire,it is infered that radiativeheat from the Huazang Temple conflagration is the main cause for the mortality of the firforests in a range of 1.0×10⁴ m²,about 50 m away from the fire centre.

Key words: Litter, Natural regeneration, Micro-sites, Effect, Light