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人工更新的现状及其主要经验高山人工更新,始自米亚罗林区,约近二十年历史.根据1972年全省初步调查,历年来总更新面积中,约近一半的面积可望成林和基本成林.以米亚罗林区为例,成活面积占更新总面积的59.8%,成林面积约占28.4%.马尔康营林处1970年调查,全处约有33.2%的更新面积基本成功.米亚罗林区1957年更新的云杉,现平均高达5米,基径粗在12厘米以上.川西1959年更新的油松,现平均高7-8米,胸径10厘米,可间伐利用.黑水林区1964～65年更新的大面积云杉,现高生长也达0.9米以上.道孚林区1967年更新的云杉,现平均高生长近1米.宝兴、红旗等营林处1959年营造的落叶松,现树高多在8米以上,最大胸径16厘米
Artificial regeneration of the status quo and its main experience of artificial regeneration of the mountain, from Miyaluo area, about 20 years of history.According to the preliminary survey in 1972 in the province, over the years the total renewal area, about half of the area is expected to become Forest and basic forest.As Miyaluo forest area, for example, the survival area accounted for 59.8% of the total renewal area, forest area accounted for about 28.4% .Malcon forest department surveyed in 1970, all about 33.2% of the updated area Basic success.Miaoruanlin updated spruce in 1957, an average of up to 5 meters, the base diameter of more than 12 centimeters.Western SichuanIn 1959, the updated pine, the average height of 7-8 meters, 10 cm in diameter, can be Thinning and utilization of large areas of Heishui forest renewal in 1964 to 65 years of spruce, high growth is now up to 0.9 meters.Fufulin District in 1967 to update the spruce, the average high growth of nearly 1 meter Baoxing, Hongqi Such as the forest in 1959 to create larches, the tree is more than 8 meters above the maximum diameter of 16 cm