木论自然保护区单性木兰野生种群资源调查

Investigation on the Resources of Wild Population of Kmeria Septentrionalis in Mulun National Nature Reserve

于2018年6月—2019年12月,采用实测法对广西木论国家级自然保护区内分布的单性木兰(Kmeria septentrionalis Dandy)野生种群资源状况进行详细调查。结果表明,52个分布点内共发现4971株单性木兰野生植株,分布面积共计29.95 hm^(2);大部分单性木兰种群在空间上呈零星分布,含有5株以上个体的分布点35个,5株以下分布点17个;大树(胸径D≥5 cm)4046株,幼树(胸径D<5 cm)925株。说明木论保护区内的单性木兰野生种群数量稀少,幼树极为有限,自然更新困难,应作为极危(CR)物种进行重点保护。

To study the population resources of Kmeria septentrionalis Dandy in Mulun National Nature Reserve,we have got a lot data by using the actual measurement from June 2018 to December 2019.The results showed that a total of 4971 individuals were found in 52 distribution sites,with a total distribution area of 29.95 hm 2.Most of them were sporadic in space,including 35 distribution points with more than 5 trees and 17 distribution points below 5;4046 large trees(DBH≥5 cm)and 925 young trees(DBH<5 cm).These results indicated that the wild population of K.septentrionalis in Mulun Nature Reserve was rare.The young trees of K.septentrionalis are extremely limited and natural regeneration is difficult,so they should be protected as extremely dangerous(CR)species.