摘要
通过调查封育3、4、5、6、7年及未封育荒漠草原群落的特征,研究了不同封育年限下草原植物群落组成及生物多样性的变化,以期探明封育对荒漠草原群落恢复的影响。结果表明,封育改变了草原植物群落组分,表现为随封育年限延长,多年生草本植物,特别是短花针茅(Stipa breviliora)等一些地带性物种比例增加;封育草原的Shannon-Wiener指数、Pielou指数、Simpson指数均比未封育草地高,封育5年草原的多样性指数最大。
The plant composition and species diversity for desert steppes were identified and calculated to determine the effect of enclosure to desert steppe by field survey in the 3 years,4 years,5 years,6 years and 7 years enclosure plots.This study showed that the enclosure changed the composition of plant community,indicating that the perennial species,especially some zone species such as Stipa breviliora,increased with the increase of enclosing time.The Shannon-Wiener indicator,Pielou indicator and Simpson indicator in the enclosure plots were higher than that in the no-enclosure plots,peaking at the enclosure communities with 5 years.
出处
《草业科学》
CAS
CSCD
北大核心
2011年第6期1091-1094,共4页
Pratacultural Science
基金
国家自然科学基金(30960268)
国家973计划前期研究(2010CB434805)
关键词
荒漠草原
自然恢复
植物群落
物种多样性
desert steppe
natural restoration
plant community
species diversity
