文献类型：期刊文献

中文题名：呼伦贝尔典型草原群落退化对其物种多样性及生物量的影响

英文题名：Effects of community degradation of Hulun Buir typical steppe on its species diversity and biomass

作者：王百竹[1] 朱媛君[1] 山丹[1] 刘艳书[1] 杨晓晖[1]

第一作者：王百竹

机构：[1]中国林业科学研究院荒漠化研究所

年份：2019

卷号：28

期号：4

起止页码：68-76

中文期刊名：植物资源与环境学报

外文期刊名：Journal of Plant Resources and Environment

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：国家重点研发计划项目(2016YFC0500908);国家自然科学基金资助项目(31670715)

语种：中文

中文关键词：呼伦贝尔草原;草原群落退化;草原群落退化指数(SCDI);物种多样性;生物量;相关性分析

外文关键词：Hulun Buir steppe;steppe community degradation;steppe community degradation index(SCDI);species diversity;biomass;correlation analysis

分类号：Q948.1;X173

摘要：采用样带和样地相结合的方法,在呼伦贝尔典型草原划定65个样地,根据群落调查结果,基于群落各层优势种对各样地的群丛进行划分,并首次采用草原群落退化指数(SCDI)对草原群落退化程度进行分级;在此基础上,分析了草原退化程度对物种多样性及生物量的影响。结果显示:依据SCDI值可将呼伦贝尔典型草原群落分为4个等级,即未退化草原(Ⅰ级,0.0065 sample plots were designated in Hulun Buir typical steppe by a combination method of transect and sample plot,and the association of each sample plot was divided based on dominant species in each layer of community according to community investigation result,and steppe community degradation index(SCDI)was used to grade the steppe community degradation degree for the first time;on the basis,effects of steppe degradation degree on species diversity and biomass were analyzed.The results show that the community of Hulun Buir typical steppe can be divided into 4 grades according to SCDI value,that is,undegraded steppe(gradeⅠ,0.00