广东鹅凰嶂自然保护区杜鹃红山茶种群结构与空间分布格局

应用生态学报

广东鹅凰嶂自然保护区杜鹃红山茶种群结构与空间分布格局

李辛雷^1,2,孙振元^2**,李纪元¹,徐翊³,罗建³

(¹中国林业科学研究院亚热带林业研究所, 浙江富阳 311400; ²中国林业科学研究院林业研究所林木遗传育种国家重点实验室, 北京 100091; ³广东鹅凰嶂省级自然保护区, 广东阳春 529600)

出版日期:2013-08-18 发布日期:2013-08-18

Population structure and spatial distribution pattern of Camellia azalea in E’huangzhang Nature Reserve of Guangdong, China.

LI Xin-lei^1,2, SUN Zhen-yuan², LI Ji-yuan¹, XU Yi³, LUO Jian³

(¹Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Fuyang 311400, Zhejiang, China; ²State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China; ³E’huangzhang Provincial Nature Reserve of Guangdong, Yangchun 529600, Guangdong, China)

Online:2013-08-18 Published:2013-08-18

摘要/Abstract

摘要：

研究了广东鹅凰嶂省级自然保护区杜鹃红山茶天然种群的基径、高度和冠幅结构,应用扩散系数、负二次指数、Cassie指数、丛生指数、平均拥挤度、聚块性指数和格林指数等聚集度指标测定了种群空间分布格局及其动态.结果表明: 在天然分布区内,杜鹃红山茶种群以成年树为主体,幼苗严重缺乏,表现为衰退趋势,但不同地段中种群的径级、高度和冠幅结构不完全相同.不同地段中杜鹃红山茶种群空间分布格局表现为聚集分布或随机分布;在种群生长过程中,分布格局从聚集型向随机型转变.

Abstract: This paper studied the structures of basal diameter, height and canopy width of Camellia azalea population in E’huangzhang Nature Reserve of Guangdong. The spatial distribution patterns and dynamics of the population were measured by applying aggregate indices including disperse coefficient, negative binomial distribution, Cassie index, clumping index, mean crowding, patch index and Green index. The results showed that in the natural distribution region, the population was mainly composed of adult trees, and was in declining due to seriously lack of seedlings. The structures of diameter, height and canopy width were not identical among different plots. In the plots, the spatial distribution pattern of C. azalea population showed clump or random, and changed from clump to random with the development of the population.

李辛雷1,2,孙振元2**,李纪元1,徐翊3,罗建3. 广东鹅凰嶂自然保护区杜鹃红山茶种群结构与空间分布格局[J]. 应用生态学报.

LI Xin-lei1,2, SUN Zhen-yuan2, LI Ji-yuan1, XU Yi3, LUO Jian3. Population structure and spatial distribution pattern of Camellia azalea in E’huangzhang Nature Reserve of Guangdong, China.[J]. Chinese Journal of Applied Ecology.