摘要
利用时空替代原理,选取漓江流域红壤区退化生态系统恢复过程中具有代表性的草丛、灌丛、针叶林、针阔混交林、常绿阔叶林5个阶段作为演替序列,研究自然恢复过程中各演替阶段的植被结构动态和生物量变化。结果表明:随着草丛→灌丛→针叶林→针阔混交林→次生常绿阔叶林正向演替的进行,在未形成成熟而稳定的顶极群落之前,物种丰富度、物种多样性指数、植被生物量及生产力都呈增大趋势。退化群落通过自然恢复总是向着结构更复杂、更完善的方向发展。根据恢复过程中植被的动态变化规律,提出了一些人工促进植被恢复的建议。
Five vegetation communities ： berbosa, shrubs, coniferous forest, theropencedrymion, and evergreen broad-leaved forest in the red soil region of the Lijiang Valley are selected as the five successive stages of the typical restoration process of degraded ecosystems to study variation of structure and biomass of the vegetation of the five different stages. Results demonstrate that with the succession going on from berbosa→shrubs→coniferous forest→tberopencedrymion→evergreen broadleaved forest,abundance and diversity index of species, biomass and productivity of vegetation all show a rising trend prior to the formation of a mature and stable biotic climax. A degraded community tends to develop to be more complex and sounder in structure. Based on the findings of the research, some advice is put forward about how to artificially accelerate ecological restoration in the red soil region of the Lijiang Valley.
出处
《生态与农村环境学报》
CAS
CSCD
北大核心
2006年第1期5-10,共6页
Journal of Ecology and Rural Environment
基金
中国科学院生命科学与生物技术特别支持费课题(STZ-00-10)
中国科学院"西部之光"人才培养计划资助项目
关键词
漓江流域
红壤区
生态恢复
植被结构动态
生物量
Lijiang Valley
red soil region
ecological restoration
dynamics of vegetation structure
biomass
