【摘要】 为了解木札岭落叶阔叶林物种多样性与其分布格局,对木札岭世界地质公园中3 hm~2永久监测样地中锐齿槲栎林进行了研究,分析了不同径级个体的分布格局、种内与种间的关联性。完全随机模型分析表明,锐齿槲栎(Quercus aliena var.acuteserrata)5个生长阶段都主要表现为聚集分布。使用泊松异质性零模型剔除环境异质性以后,聚集分布格局的程度显著降低。幼树与其他龄级的锐齿槲栎在所有尺度上都无显著关联,中树与大树和老树都在小于10 m尺度上表现出负相关,老树和大树在小于20 m尺度上表现出负相关。该研究结果表明,锐齿槲栎群落内竞争主要集中在中树、大树和老树之间,与大部分物种都呈负相关,锐齿槲栎与大部分物种之间竞争激烈且锐齿槲栎占优势。更多还原

【Abstract】 To understand of species diversity and distribution pattern of the deciduous broad-leaved forest in Muzhaling, Quercus aliena var. acuteserrataforest in a 3 hm~2 permanently monitored plot in Muzhaling World Geopark was studied to analyze the distribution patterns, and the intraspecific and interspecific associations of individuals of different diameter classes. The complete stochastic model analysis showed that the five growth stages of Quercus aliena var. acuteserrata were mainly aggregation distribution. After using the Poisson heterogeneity zero model to eliminate environmental heterogeneity, the degree of aggregation distribution pattern was significantly reduced. There was no significant correlation between saplings and other age-level Quercus aliena var. acuteserrata at all scales. The adult trees were negatively correlated with both large trees and old trees on the scale of less than 10 m. Old and large trees were negatively correlated with each other on the scale of less than 20 m. The results of this study indicated that the competition within the population of Quercus aliena var. acuteserrata concentrated mainly among the adult trees, large trees and old trees, while negative correlation existed between Quercus aliena var. acuteserrata and most of other species. The competition between Quercus aliena var. acuteserrata and most other species was fierce and Quercus aliena var. acuteserrata dominated.更多还原