毛红椿人工林优树选择标准

The standard of selecting superior trees from Toona ciliata var. pubescens plantation

利用福建省现有的毛红椿人工林,采用5株优势木对比法和10株邻近木综合标准差比较法,研究毛红椿候选优树的生长量标准和形质标准。结果表明,毛红椿人工林的优树选择应采用5株优势木对比法,优树的生长量标准为:树高≥优势木平均树高,胸径≥优势木平均胸径的1.156倍,单株材积≥优势木平均单株材积的1.389 5倍,且形质得分应达4.72分以上,该选择标准准确、适用,可作为今后毛红椿人工林优树选择的标准。

The growth and quality standards for selecting superior trees from the existing Toona ciliata var. pubescens plantations in Fujian Province were studied using both “ Five-Dominant-Tree Comparison” and “ Ten-Adjacent- Tree-Standard Deviation Compari-son” methods. The results showed that the “ Five-Dominant-Tree Comparison” method should be used when selecting superior T. ciliata var. pubescens trees. Growth standard for selecting superior trees should include the following： （1） the tree height should be e-qual or greater than that of dominant tree; （2） the diameter- at- breast-height （ DBH） should be greater than or equal to 1.156 times that of dominant tree; （3） the wood volume should be greater than or equal to 1.389 5 times that of dominant tree; and （4） quality score should be more than 4.72 points. This standard is accurate and applicable in guiding the selection of superior trees from T. ciliata var. pubescens plantation.