摘要
本文运用聚类分析和主成分分析方法,将宁夏甘草集中分布区划分为15种类型,揭示出了类型之间存在的相似性、差异性以及差异程度。并分析了本区甘草分布的生态特点和变化规律,为合理地经营、保护和开发利用甘草资源提供一定的科学依据。
In this paper the major G. uralensis distributed districts in Ningxia is divided into 15 types through cluster analysis and prin, cipaicomponents analysis. It shows the similarity, disimilarity as wall as different dagrees bstween two types. The ecologieal characteristics and changing regularity of the G. uralensis distribution are analysed. it has offered certain scientific reference for rationai managements, preservation, exploitation and utilization resourcfes of G. uralensis.
出处
《农业科学研究》
1989年第2期79-85,共7页
Journal of Agricultural Sciences
关键词
甘草
聚类分析
主成分分析
Clycyrrhiza Cluster analysis Principal components analy sis