摘要
用物种多度、丰富度指数、Shannon-Wiener多样性指数及均匀度指数,比较分析了南岭国家级自然保护区的试验区、缓冲区和核心区3个不同功能区群落的物种多样性变化.结果表明:受人为干扰较多的试验区群落,种间多度差异大;缓冲区的群落,种间多度差异比较缓和;核心区中受到严格保护的群落,种间多度差异不显著.核心区群落的物种丰富度最多,缓冲区群落次之,试验区群落最少.3个群落的多样性指数随保护程度的升高而增加;它们的均匀度指数随保护程度的升高而降低.但3个群落间的多样性指数和均匀度指数差异并不显著.这说明人为干扰在一定程度上模拟了自然干扰的过程,对维持和增加森林群落物种多样性有一定的作用.
Variations in species diversity among the forest communities under different protection regimes, i. e. , experimental zone, buffer zone, and core zone of Nanling National Nature Reserve, were compared and analyzed in terms of species abundance, richness, Shannon-Wiener diversity index and evenness in- dex. According to the investigation, species abundance was significantly different in the experimental zone, which experienced much disturbance. Species abundance varied moderately in the buffer zone and was not significantly different in the core zone with strict protection. The core zone had the highest species richness, next came the buffer zone and the experimental zone. The Shannon-Wiener diversity index increased with higher protection level, while the evenness index increased as the protection level decreased. But the Shannon-Wiener diversity index and the evenness index among the three communities were not significantly different. The study suggested that human disturbances to some extent had an effect similar to the process of the natural disturbance, which could maintain and increase species diversity of the forest community.
出处
《华南农业大学学报》
CAS
CSCD
北大核心
2008年第2期74-78,共5页
Journal of South China Agricultural University
基金
国家林业局热带林业研究重点实验室开放基金(2005K02)
中国香港特别行政区嘉道理农场暨植物园资助项目
