北京林业大学学报2017，Vol.39Issue(7)：46-53,8.DOI:10.13332/j.1000--1522.20170061
天宝岩竹阔混交林毛竹及其伴生树种生态位的研究
Niche characteristics of Phyllostachys edulis and its associated tree species in Tianbaoyan bamboo and broadleaved mixed forest
摘要
Abstract
By understanding the ecological relationship between Moso bamboo and the associated tree species in bamboo broadleaved mixed forest, this paper aims to find the appropriate proportion of cropping to provide basis for the optimization of the mixed forest from the niche level. A field plot sampling method was employed to investigate community niche of bamboo broadleaved mixed forest in Tianbaoyan of Fujian Province of Southern China. The Levins and Shaanon niche breadth index, niche overlap index, Schoener niche similarity index were used to study and analyze the niche characteristics of the tree layer and the regeneration layer with different mixing ratio of bamboo and broadleaved mixed forest as different resource niche. Results showed that: 1 ) the Levins and Shaanon niche breadth index showed that Castanopsis carlesii, Castanopsis fargesii and Alniphyllumfortunei were the dominant species of Moso bamboo, and their important value and niche breadth were strong, and the ecological adaptability was strong, and they play an important role in the change of community structure. 2 ) The ratio of niche similarity between tree species and the niche overlap index of Moso bamboo were not high. The Lhi value of Castanopsis fargesii was 0. 509, and the Lhi value of the other species was less than 0. 5, indicating that there was a large ecological difference between Moso bamboo and most tree species and resource utilization differences, and a stable symbiotic relationship was formed between each other. 3) The niche breadth of the evergreen tree species was larger than that of the deciduous tree species, and the niche overlap of Moso bamboo was relatively large. When the resource used by Moso bamboo was insufficient, it was also more likely to cause potential competition. 4) The density and biomass of Moso bamboo were the largest when the mixed ratio of bamboo and broadleaved mixed forest was in the range of 15% -20%. When the mixing ratio was too large, the bamboo gradually lost the dominant position in the community , and the symbiotic synergistic relationship with the broadleaved tree was more likely change to the competitive relationship.关键词
毛竹/伴生树种/冠幅比/生态位Key words
Phyllostachys edulis/associated tree species/crown ratio/niche分类
农业科技引用本文复制引用
周亚琦,官凤英,范少辉,刘广路,夏明鹏,涂年旺..天宝岩竹阔混交林毛竹及其伴生树种生态位的研究[J].北京林业大学学报,2017,39(7):46-53,8.基金项目
林业公益性行业科研专项(201404408)、国际竹藤中心科研业务费专项"竹资源高效经营管理技术研究"、江苏宜兴竹林生态定位观测研究站运行经费项目. （201404408）
