昆明地区杉科4个树种引种20年的生长效果研究

摘要

The growth performance of Sequoia sempervirens, Taxodium ascendens, T.mucronatum and Sequoiaden-dron giganteum 20 years after introduced to Kunming was randomly surveyed in order to understand the adaptability of these four Taxodiaceae species.The results indicated that the growth performance of Sequoia sempervirens and T.ascendens were relatively well, the annual height and DBH growth increment of Sequoia sempervirens were 1.31 m and 2.83 cm.The growth of T.mucronatum and Sequoiadendron giganteum were not desirable, obviously lower than the growth of Chinese fir.The introduced Sequoiadendron giganteum died from the drought in 2001, which was not suitable for extension in Kunming.%通过对昆明地区引入的北美红杉、池杉、墨西哥落羽杉、美国巨杉4个树种在不同生境下的生长情况进行随机抽样调查,结果表明:北美红杉和池杉在昆明适应性较强,长势较好,北美红杉树高年平均生长量达1.31 m,胸径年平均生长量达2.83 cm,可选择适合生境推广.墨西哥落羽杉和美国巨杉适应性较差,生长缓慢,明显低于本地杉木,且美国巨杉于2001年因干旱死亡,不适宜昆明地区推广,需进一步对其引种适应性开展研究.