闽北短伐期阔叶林研究

A STUDY ON THE SHORT ROTATION BROAD LEAVED FORESTS IN NORTHERN FUJIAN PROVINCE

连续７ ～８ａ 的固定标准地调查结果表明：利用人工促进天然更新可成功培育短伐期闽粤栲林、短伐期米槠林及短伐期丝栗栲林，轮伐期分别为１０ 、１４ 及１６ａ ，达轮伐期时的蓄积平均生长量分别高达２０－５２ 、１５－９９及１２－１７ｍ３／（ｈｍ２·ａ） ：短伐期林分密度大、自然稀疏强烈，高生长异常迅速，高径比大、树枝树叶比例较小，生产力高；短伐期林分均为多树种（１２ ～１７ 种） 混交的单优群落，灌木层中的乔木幼树多样性高、密度大。

A continuous inventory by permanent sample plots for 7～8 years showed: Castanopsis fissa stand of short\|rotation, Castanopsis carlesii stand of short\|rotation and Castanopsis fargesii stand of short\|rotation had been successfully cultivated by natural regeneration with artificial promotion.Their rotations were 10,14 and 16 years,respectively.Their mean annual increments of growing stock at rotation age were 20.52,15.99 and 12.17 m 3/(hm 2·a),respectively.High density,strong natural thinning,rapid height increment,high ratio of height to DBH,low percentage of tree branch and leave and high productivity were the features of the short\|rotation stands.