桤木人工用材林改建母树林技术
Acta Agriculturae Jiangxi（2012）
Abstract
采用定株环状均匀疏伐法,依据留优去劣原则和母树等级划分标准,对10年生桤木与杨树优良混交人工林进行首次疏伐,桤木株数采伐强度为40％,杨树全伐,同时对母树进行修枝、截干和抚育施肥等管理.改建后桤木母树林保留密度为405 ～ 480株/hm2,郁闭度为0.5 ～0.6,平均树高和胸径分别为12.86 m和14.16 cm.
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Key words
thinning,reconstruction,seed-producing forest,alnus cremastogyne,forests,stems,diameter
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