耒阳市南方红豆杉资源分布调查

Distribution of Taxus chinensis var.mairer resource in Leiyang City

采用标准地调查与样线调查相结合的方法,对耒阳市南方红豆杉资源的分布现状、生境及群落类型进行了研究。结果表明:耒阳市分布有胸径10 cm以上的南方红豆杉大树53株,树龄100 a以上的南方红豆杉古树23株,主要分布于2个乡13个村。南方红豆杉资源主要分布在村旁宅院和毛竹林中,少量分布在次生阔叶林及灌木林内,其中独立木资源数量为37.74%,毛竹林资源数量为33.96%,次生阔叶林资源数量为16.98%,灌木林资源数量为11.32%。

Investigation on the distribution status, habitat and coenotypes of Taxus chinensis var. mairei resource in Leiyang City was conducted via the combination methods of sample plot and line intercept. The results showed that, there were 53 Taxus chinensis var. mairei, whose DBH were over 10 cm, and 23 ones lived for more than 100 years, mainly distributed in 13 villages of 2 towns. Further- more, Taxus chinensis var. mairei were mainly distributed in the village side house and bamboo forests, and a small amount of them were distributed in the secondary broad-leaved forest and shrubbery. Among them, the Taxus chinensis var. mairei resources of inde- pendent wood, bamboo forest, secondary broad-leaved forest and shrubbery accounted for 37. 74% , 33.96%, 16.98% and 11.32% respectively.