广西植物2017，Vol.37Issue(6)：783-790,782,9.DOI:10.11931/guihaia.gxzw201608020
极小种群物种云南肉豆蔻的群落结构及其种群现状
Community structure and distribution of minimum population species of Myristica yunnanensis
摘要
Abstract
Myristica yunnanensis,which only distributes in seasonal rain forest in southern Yunnan and was one of the national second-class protected plants and 120 minimum population species of Chinese,has not yet been carried on population study.Based on monitoring data in 1993,M.yunnanensis and other high important value tree species from six permanent plots (50 m × 50 m) on the Xishuangbanna Mengla seasonal rain forest were compared to reveal the community status of M.yunnanensis,and the seedling number which was inferred in the early established plots was compared to the seedling number gotten from investigations in 2016.The results showed that there were 223 woody species with DBH ≥5 cm in plots,affiliationed to 56 families and 140 genera.The distributed altitude of M.yunnanensis was higher than the recorded altitude up to 850 cm;There were 16 M.yunnanensis trees DBH ≥5 cm in totall in six plots which was in small number with high important value,and their single average DBH and basal area were higher than average level in plot;However,Myristica yunnanensis grew slow and their diameter level was mainly in the small class,only one tree grew into DBH ≥5 cm class in 23 years;their drupes were spred mainly depending on gravity and animals removal,so that the fruits were usually eaten by animals and not easy to keep.These propagation mode caused seedlings and saplings less,leading to difficulties in population regeneration.This study provides the basic information for the further protection of the Myristica yunnanensis.关键词
群落结构/重要值/胸径生长/种群现状/云南肉豆蔻Key words
community structure/important value/DBH growing/distribution/Myristica yunnanensis分类
农业科技引用本文复制引用
马晨晨,代俊,肖之强,杜凡..极小种群物种云南肉豆蔻的群落结构及其种群现状[J].广西植物,2017,37(6):783-790,782,9.基金项目
西南林业大学科技创新项目(15095) （15095）
西南林业大学植物学重点学科建设项目[Supported by the Science and Technology Innovation Fund in Southwest Forestry University(15095) （15095）
Program of Key Disciplines Construction for Botany in Southwest Forestry University]. （）
