文山老君山多变石栎种群生活史特征与空间分布格局  

Life History Characteristics and Spatial Distribution Patterns of Lithocarpus variolosus Population in Laojun Mountain

作　　者：何德明 李金 许琨[2] 范中玉 刘维暐[2] 黄华[2] 丰燕飞 韦荣彪 HE De-ming;LI Jin;XU Kun;FAN Zhong-yu;LIU Wei-wei;HUANG Hua;FENG Yan-fei;WEI Rong-biao(Wenshan Administration of National Nature Reserves, Wenshan Yunnan 663099, P.R.China;Kunming Institute of Botany, Chinese Academy of Sciences, Kunming Yunnan 650201, P.R.China)

机构地区：[1]文山国家级自然保护区管护分局,云南文山663099 [2]中国科学院昆明植物研究所,云南昆明650201

出　　处：《西部林业科学》2017年第5期82-86,92,共6页Journal of West China Forestry Science

基　　金：西南-川藏地区本土植物清查与保护子课题(Y4243331Y1)

摘　　要：多变石栎为南方山地水源林的主要树种,具有重要的经济与生态价值。为了解其生活史动态特征与空间分布规律,本文通过对文山老君山多变石栎林进行样方调查,对多变石栎种群的生命表特征、年龄结构、存活曲线以及种群空间分布格局4个方面进行了研究。结果表明:文山老君山多变石栎种群年龄结构呈纺锤形,即树种组成呈中龄树比例最大,幼树和成龄树比例较小的规律;属于衰退型,将形成更稳定的复合群落;由于多变石栎林内密闭度大,幼苗不容易成活,而老龄立木由于接近其实际寿命,所以死亡率都较高,存活曲线基本接近Deevey I型,即凸型曲线;通过多变石栎点格局分析发现,其分布呈现出随机分布的规律,这可能与研究区的多变石栎种群所处的生态环境及其自身的生物学特性相关。Lithocarpus variolosus is the main tree species of the water source forest in the mountain areas of south China.In order to understand the life history characteristics and the pattern of the spatial distribution of Lithocarpus variolosus population,based on two sample plots in the Laojun Mountain of Wenshan Prefecture in Yunnan Province in2016,we examined the life table characteristics,age structure,survival curve and spatial distribution of the Lithocarpus variolosus population.The results showed that:(1)The age structure of Lithocarpus variolosus population followed a spindle shape,which indicated that the population was declining and may be form a more stablecompound community;(2)The number of young and old-aged individuals accounted for less proportion of totalpopulation,but more for the middle-aged individuals;(3)The survivorship curve of Lithocarpus variolosus population generally matches a Deevey Type I;(4)The spatial distribution of Lithocarpus variolosus population was random.Based on these findings,we conclude that its spatial patterns population were controlled by local ecological characteristics and its biotic conditions.

关 键 词：多变石栎 文山老君山 种群结构 种群动态 点格局分析 

分 类 号：Q948[生物学—植物学]