长期降水量变化下荒漠草原植物生物量、多样性的变化及其影响因素

王晓悦, 许艺馨, 李春环, 余海龙, 黄菊莹

Changes of plant biomass, species diversity, and their influencing factors in a desert steppe of northwestern China under long-term changing precipitation

WANG Xiao-Yue, XU Yi-Xin, LI Chun-Huan, YU Hai-Long, HUANG Ju-Ying

表2 降水量变化对荒漠草原植物多样性的两因素方差分析

Table 2 Two-way ANOVA of plant diversity in a desert steppe under long-term changing precipitation

变异来源 Sources of variation 自由度 Degree of freedom F (R) F (H′) F (D) F (E) 降水量 Precipitation (α) 4 2.705* 1.617 1.810 2.807* 月份 Month (β) 5 5.700** 18.841** 1.888 22.071** 降水量×月份 Interaction of α and β 20 0.532 0.632 0.714 0.918