金佛山方竹自然扩散生态效应初步分析  

Preliminary analysis on natural spread ecological effects of Chimonobambusa utilis (Keng)Keng f.

作　　者：易思荣[1] 黄娅[1] 肖波[1] 全健[1] 曹厚强[1] 

机构地区：[1]重庆市药物种植研究所重庆市中药良种选育与评价工程技术中心,重庆408435

出　　处：《生态科学》2012年第1期22-25,共4页Ecological Science

基　　金：科技部十一五支撑计划项目(2006BAC01A16);重庆市自然科学基金项目(CSTC;2009BB5251)

摘　　要：为探索金佛山方竹在自然扩散过程中对其他物种造成的影响,选择了草地、灌木林和乔木林三种不同的植被布设样方,连续五年观测和统计了金佛山方竹自然扩散过程中各试验点物种种类、各类群物种的平均高度和平均盖度的变化。调查发现,各试验点共有乔木14种、灌木23种、草本41种;随着金佛山方竹的扩散,乔木层植物的种类基本保持不变,其平均高度变化十分微弱,兰花试验点乔木层平均盖度下降约4.6%,上茨盖坝试验点的平均盖度上升12.5%;灌木层植物种类逐渐减少,平均盖度逐渐降低,平均高度呈现出先降低后上升的趋势;草本层植物的物种种类、平均高度和平均盖度均明显降低。Abstract： In order to explore the impact of diffusion process of Chimonobambusa utilis on other species, we selected three different vegetations （grassland, bushwood and highforest） to investigate the plant species in each vegetation, as well as average height and average coverage of species during the diffusion process of C. utilis. We found that there were 14 trees species, 23 shrub species and 41 herbs species in the three sites. In the diffusion process of C. utilis, the trees species are essentially unchanged and the variation of average height is very weak. The average coverage of trees in Lanhua location decreased about 4.6% and that in Shangcigaiba location increased 12.5%. The shrub species were gradually reduced, and the average coverage was decreased. The average height showed a trend of reducing first and increasing later. The species, average height and average coverage of herbs species were significantly reduced.

关 键 词：金佛山方竹 自然扩散 变化趋势 

分 类 号：Q948[生物学—植物学] Q14