内蒙古羊草草原生物多样性探讨  

Plant Diversity of Leymus Chinensis Community in Inner Mongolia Grassland

作　　者：贾亚娟[1] 韩国栋[1] 王明君[1] 郑淑华[1] 

机构地区：[1]内蒙古农业大学生态环境学院,呼和浩特010019

出　　处：《干旱区资源与环境》2007年第7期142-145,共4页Journal of Arid Land Resources and Environment

基　　金：国家自然科学基金(30360022;30590382);教育部青年教学科研奖励;内蒙古科技攻关

摘　　要：多样性的研究是长期以来许多学者争论的焦点,然而经过长期的研究,关于多样性的变化仍存在着差异。本文根据对多年围封的草地数据资料,对多样性进行了分析。结果表明,均匀度对多样性的变化起主要作用;多样性与生产力呈曲线关系,在达到一定值后,随多样性的增加生产力下降;多样性与系统稳定性也呈曲线变化,但在研究初期稳定性与多样性呈负相关。Many scientists have been studied diversity for many years, but it is also a focus of controversy . However, after studies on the diversity for a long time, there are still differences in the diversity. On the basis of the data of long - time enclosed grassland, we analysed the diversity. The results showed that evenness plays a major role for the change of diversity; There are relationship between diversity and productivity, productivity increases with the diversity increase between, but when diversity reaches a certain value, the productivity declines ; There are relationship between diversity d and stability. At the initial stage of the study , the relationship between the stability and diversity is negative.

关 键 词：草地 多样性 生产力 稳定性 

分 类 号：Q16[生物学—普通生物学]