广东省南昆山观光木种群结构及分布格局  

Population Structure and Distribution Pattern of Tsoongiodendron odorum on Nankunshan,Guangdong Province

作　　者：许涵[1] 庄雪影[1] 黄久香[1] 张浩[1] 彭逸生[1] 何仲坚[1] 

机构地区：[1]华南农业大学林学院

出　　处：《华南农业大学学报》2007年第2期73-77,共5页Journal of South China Agricultural University

摘　　要：在广东省南昆山观光木天然次生林中设置了5个1 600 m2的样地,调查了观光木种群所在群落的物种组成及观光木种群的龄级结构和空间分布格局.结果表明:观光木种群所在群落具有较高的物种多样性,以樟科、山茶科、壳斗科植物为优势科;观光木种群以Ⅱ级幼苗为主,缺乏Ⅲ级苗,中龄树及成年母株少,是一个衰退种群;其分布格局呈随机分布或弱聚集分布.由于人为干扰活动较频繁,观光木自然种群处于濒危状态.建议采取积极的保育措施,加强对南昆山观光木资源及其生境的保护.Five 1 600 m^2 plots were set up in the natural secondary forests with Tsoongiodendron odorum on Nankunshan of Guangdong Province. The community composition and floristic diversity, population structure and distribution pattern of T. odorum were surveyed. The results show that the forest communities have high floristic diversity, which are dominated by the species of Lauraceae, Theaceae and Fagaceae. The population of T. odorum is small and dominated by the saplings of class Ⅱ. Young trees and mature trees are rare ; the spatial distribution of the population is in random pattern or low cluster pattern. Owing to human disturbances, the population and communities are threatened. It is suggested to enhance the habitat protection by expanding existing nature reserve boundary to include the existing communities of T. odorum.

关 键 词：南昆山 观光木 物种多样性 种群结构 分布格局 

分 类 号：Q948.12[生物学—植物学]