【摘要】 应用Schluter的方差检验法,在2种尺度下采用物种出现与否的二元数据及物种多度数据,对黑石顶自然保护区森林群落演替过程5个演替阶段种间联结动态进行了研究。同一尺度下采用2类数据进行测定,对测度结果表现出的差异所隐含的生态学意义进行了分析,认为这是由于多物种间环境适应性相同时,为降低种间竞争强度而产生的一定程度的种间分离。研究结果显示,演替过程各个群落多物种间的总体关联性在2个尺度下都表现为不同程度的正关联或无关联;不同群落种间分离随正关联程度的增加而加大,表明植物群落可能是一个自组织系统,通过自我调节,实现多物种间的稳定共存。更多还原

【Abstract】 The difference in species association index values of a community between presence/ absence data and population density data can be regarded as species segregation to a certain degree. The pattern of association between tree species of the forest communities in Heishiding Nature Reserve was examined in two scales, sixteen 16 m×16 m quadrats and sixty-four 8 m x 8 m quadrats, in each community of the successional stages, using the method of variance test with reference to presence/absence data and population density data. The results indicated that the association of species showed positive or no correlation in two scales at various successional stages, and the higher level of significance of positive association is also accompanied with higher species segregation. This implied that plant community can be regarded as a self-organizing system, weak competition permits coexistence among species and reduces community instability.更多还原