喀斯特峡谷植被演替过程中的物种组成及多样性  

Species composition and diversity in the process of natural vegetation succession in Huajiang Karst valley

作　　者：王圳[1,2] 张金池[1] 王如岩[1] 王定胜 梦莉[1] 闫少峰[1] 

机构地区：[1]南京林业大学森林资源与环境学院,南京210037 [2]江苏省连云港市林业技术指导站

出　　处：《林业科技开发》2010年第6期48-51,共4页China Forestry Science and Technology

基　　金：国家自然科学基金(编号:30872076/C161303)

摘　　要：采用空间代替时间的方式对花江喀斯特峡谷不同演替阶段的群落物种组成和多样性进行了研究。结果表明：裸地阶段是植被恢复的起始阶段,植物物种丰富度和物种多样性均为最低。随着演替的正向进行,物种多样性增加,群落结构逐渐复杂并在森林群落阶段形成较为稳定的结构。草本植物在草本群落阶段物种丰富度和生物多样性达到最高,随即开始下降。灌木的物种丰富度和多样性在灌木阶段达到最大并在森林阶段保持稳定。乔木的物种丰富度和物种多样性均随着演替的进行逐渐增加。退化喀斯特不同恢复阶段的植被群落具有较为明显的优势种,通常为2~3种。Investigation of field-plots was done by spatiotemporal substitution in Huajiang Karst valley with respect to the species composition and diversity of different vegetation restoration.The results showed that: bare stage was the initial stage of vegetation which plant species richness and species diversity were the lowest.With the succession of vegetation,the species diversity increased and the community structure became more complex.The structure of forest communities was in the formation of a more stable phase.The species richness and biodiversity of herbs reached the highest in the herbaceous community stage and then began to decline.Shrub species richness and diversity reached the maximum in the shrub stage and remained stable in the forest stage when tree gradually increased with succession of vegetation.There were obvious dominant species usually 2 ~ 3 in different recovery stages of degraded Karst area.

关 键 词：退化喀斯特 重要值 生物多样性 群落演替 

分 类 号：S718.54[农业科学—林学]