摘要
生态位是生态学的重要研究内容,在实际应用中常用生态位宽度(niche breadth)、生态位重叠(niche overlap)、以及生态位相似性比例(niche similarity)等重要指标来衡量物种间生态位关系。干旱河谷区属于生态系统脆弱和退化特别严重的区域,植被恢复十分困难。利用生态位各指标评价干旱河谷区灌木种群对不同资源的利用能力和环境适应能力以及灌木种群之间的生态学相似性和物种间的竞争关系,可筛选出有利于干旱河谷植被恢复的先锋物种。然后选择生态位宽度大的乡土灌木种,并辅以与其种群生态位重叠小或者相似比小的种群为伴生种,以减少种间竞争,有利于形成稳定的群落,最终达到植被恢复的目的。
Thie niche is an important research object of ecology. Niche breadth, niche overlap and niche similarity are used as important indicators to measure the relationship between niche species. Dry river valley areas belong to fragile ecosystems and particularly serious degradated regions, and their vegetation restoration is very difficult. Evaluation of different resources and environmental adaptability of shrub populations in the arid valley area and competitive relationship between ecology and species similarity among populations of shrub can be used to screen out pioneer species in favor of the restoration of vegetation in arid valleys. Then niche width of native shrubs is selected and supplemented with their small populations or similar niche overlap than small populations of associated species in ovder to reduce interspecific competition,which is conducive to the formation of a stable community, and ultimately achieving the purpose of the vegetation recovery.
出处
《四川林业科技》
2015年第5期16-20,共5页
Journal of Sichuan Forestry Science and Technology
基金
岷江上游干旱河谷土壤种子库与植被更新对海拔梯度的响应研究
成兰铁路建设区干旱河谷植被恢复研究
