We observed the microclimate in the three years mixed Forest of Eucalyptus torelliana +Acacia turiculaeformis and the pure forest of Eucalyptus torelliana in August 1982. Comparing the microclimate in the mixed forest with that in the pure forest, it shows that surface average temperature and highest surface average temperature is 1.7℃ and 6.7℃ lower, the soil temperatures below the surface at 5,10,15 and 20 cm are 1.6℃,1.5℃,1.4℃ and 1.4℃ lower respectively, and the light intensity on the surface and above ...