人工羊草草地演替过程中格局多样性的变化  

The Pattern Diversity Changes in the Successional Processes Artificial Leymus Chinensis Grassland

作　　者：李育中[1] 祝延成 吴雨华 

机构地区：[1]东北师范大学草地研究所

出　　处：《东北师大学报（自然科学版）》1996年第3期108-111,共4页Journal of Northeast Normal University(Natural Science Edition)

摘　　要：介绍了格局多样性的概念、人工羊草草地演替过程中格局多样性的变化及其机制．８年的研究结果表明：羊草种群的分布格局由最初的均匀型向聚集型及与其它杂类草混生型转变，在群落中少数几个物种起作用的格局逐渐被多个物种共同起作用的格局代替．The concept of pattern diversity was introduced in the paper. The pattern diversity changes and their mechanisms in the successinal processes of artificial Leymus chinensis grassland were analysed. Results of 8 years show that the beginning uniform pattern of Leyinns chinensis gradually is replaced by the patterns of clumped and random mixed with other populations, the pattern of a few spedes played main role are being replaced by more spedes.The main reason is that single population grassland need same type nutrition, which result in the nutrition decreased, and other different nutrition needed specles gradually invade.

关 键 词：格局多样性 人工羊草草地 演替 人工草地 

分 类 号：S812.3[农业科学—草业科学]