Position: Home > Articles > Seedling Growth of Machilus gamblei in Artificial Controlled Experiment in Ailao Mountain
Journal of West China Forestry Science
2016,45
(1)
88-92+98
哀牢山黄心树幼苗人工控制实验生长特征
作 者：
杨泽雄;燕腾;彭一航;巩合德
单 位：
西南林业大学
关键词：
遮光实验;土壤水分;气体交换;林窗;林冠;黄心树
摘 要：
为探究哀牢山国家自然保护区常绿阔叶林优势树种黄心树幼苗的生境选择特征,将其幼苗分别移栽到森林生境及人工遮阳生境中,对其相关生长指标和气体交换参数进行了测定,结果表明,黄心树幼苗具有较好的耐阴性,在低光条件下能保持较高的存活率。林窗中心的黄心树生长指标显著高于林冠下,在林窗中心,更有利于黄心树幼苗的存活及生长。土壤含水量是影响黄心树幼苗存活率及其生长的主要因素,较高的土壤含水量有利于黄心树幼苗的定居和生长。光照强度是影响黄心树幼苗生长的重要因素,在一定的光照强度范围内,黄心树幼苗各项生长生理指标都随光照的增强而增大。黄心树幼苗在相近光照强度的人工遮阳环境中,比在自然森林生境中生长状况要好。但黄心树幼苗在较低的光照条件下,其生长对土壤水分含水量的变化不敏感。
译 名：
Seedling Growth of Machilus gamblei in Artificial Controlled Experiment in Ailao Mountain
作 者：
YANG Ze-xiong;YAN Teng;PENG Yi-hang;GONG He-de;Southwest Forestry University;
关键词：
shading experiment;;soil moisture;;gas exchange;;forest gap;;forest canopy;;Machilus gamblei
摘 要：
To study the habitat characteristics of Machilus gamblei seedlings,the dominate tree species of the evergreen broad-leave forest,in Ailao Mountian National Nature Reserve,the seedlings were transplanted in natural habitat and artificial sheltered condition,and relevant parameters on growth and gas exchange were measured. The results showed that Machilus gamblei seedlings had good capacity on shade tolerance,and it could maintain a high survival rate in low light conditions. The growth parameters of Machilus gamblei at forest gap were higher than that under forest canopy,and the seedling could survive better at the forest gap. Certain soil moisture and light density would facilitate the growth of Machilus gamblei seedlings. The seedling growth of Machilus gamblei in artificially created shading conditions performed better than that in the natural forest habitats,but seedling growth at low light density was not sensitive to the soil moisture gradient.
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