作　　者： ; ; ; ; ; ; ;

机构地区： 中国科学院西北高原生物研究所

出　　处： 《草地学报》 2002年第4期279-286,共8页

摘　　要： 通过对矮嵩草草甸主要植物种群物候特性的观测研究 ,采用聚类分析和主分量排序法将矮嵩草草甸 19种植物种群划分为不同的物候类群。利用相关系数排序法指出了影响不同物候期的主要生态因子依次是温度、降水量和日照时数。研究结果表明 。 The phenological characteristics of main plant populations in Kobresia humilis meadow were measured and studied in this paper. The 19 plant populations in Kobresia humilis meadow were divided into different phenological groups with clustering analysis and principal component ordination. By the method of correlative coefficient ordination,the main ecological factors that influenced different phenological periods were listed as bellow:temperature,precipitation and sunshine hours,respectively. All of this study proved that phenological index was a good quantitative standard to show phenological pattern of alpine Kobresia humilis meadow.

关 键 词： 矮嵩草草甸 植物种群 物候学 物候指数 聚类分析 主分量排序 相关系数

领　　域： [农业科学] [农业科学] [农业科学]