3种青冈的空间分布格局研究

Study on the spatial pattern of three Cyclobalanopsis’ broad-leaved forest in subtropical zone

在福建宁德支提山国家森林公园、福建南平茫荡山自然保护区以及福建闽清黄槠林自然保护区,对突脉青冈、小叶青冈和福建青冈群落进行空间格局研究。聚集度指标表明,突脉青冈、小叶青冈和福建青冈群落空间分布型均为聚集分布,聚集原因为种群与环境共同作用引起。回归模型偏离度计算表明,兰星平的La-X指标对突脉青冈、小叶青冈和福建青冈群落的空间分布型拟合效果最好,其次是Iwao的X*-X回归模型,Taylor幂法则对3种群落的空间分布型拟合效果最差。

In Zhiti Mountain Scenic Area of Ningde,Mangdangshan Nature Reserve of Nanping and Huangzhulin Nature Reserve of Minqing,the spatial patterns of Cyclobalanopsis elevaticostata community,Cyclobalanopsis myrsinaefolia community and Cyclobalanopsis chungii community were investigated.The aggregation indices indicated that the spatial patten of Cyclobalanopsis elevaticostata community,Cyclobalanopsis myrsinaefolia community and Cyclobalanopsis chungii community were aggregated distribution,due to the interaction of population and environment.Deviation calculation of regression model showed that,La-X indexs was the best on the fitting effect in the spatial distribution,followed by Iwao X＊-X regression model,Taylor power method was the worst.