Abstract: A four—year’S study on ecological restoration on temperature characteristics in the second generation of Chinese fir has been carried out at Huitong county，Hunan Provice，26°50′N，109°45′E．The results showed that the ecological restoration of temperature in young stands was very fast．Two years after afforestation，the ecological restoration could attain to 26％ of that of the mature stand，and 4 years later it could reach to 70％．In young stand，artificial disturbance of cultivation might decrease ecological restoration on surface soil temperature．Under natural condition，the ecological restoration speed on soil temperature within the young stand decreased as the soil layer deepened，and it was smaller than that of air temperature．This means that the soil physics within young stand will take a longer time to resorate to the level in mature stand．

Key words: Chinese fir, Second generation, Temperature, Ecological restoration