人为干扰对小果野芭蕉群落生物量及多样性的影响

采用标准木法和回归分析法（乔木层）研究了小果野芭蕉群落在演替吕不同的压力条件下生物量和多样性的变化，结果显示，小果野芭蕉的侵入在正常情况下对群落生物量的影响并不显著，但由于人为干扰，可以明显地降低群落生物量。人为干扰是小果野芭焦群落长期保持在一个种群数量较大，物种多样性指较低和重要值较大的状态。轮歇丢荒地小果野芭蕉的侵入和迅速发展，是群落恢复演替过程中一种正常的途径。因此保持小果野芭蕉群落不受人为干扰是使其沿正常演替途径恢复的一种可行方法。

The Effects of Human Disturbance on Biomass and Plant Diversity of Musa acuminata Community

The biomass and diversity of Musa acuminata communities under different disturbance pressure was studied by sample tree and regression analysis (for tree layer). The results showed that the Musa acuminata invading into shift terra did not influence the biomass indistinctively. Disturbed by human being, the biomass became lower. The results also show disturbed Musa acuminata community would keep a condition of big amount population, lower species diversity and high important value. In the shift terra, Musa acuminata invade in and expansion rapidly was a normal way of community succession. It was suggested that protection community from jamming was a good way to keep the Musa acuminata community succession on right way.