巴音布鲁克高寒草甸植物功能多样性与生态系统多功能性关系沿海拔梯度的变化

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吕自立¹, 刘彬¹^,^*(

), 常凤¹, 马紫荆¹, 曹秋梅²

Relationship between plant functional diversity and ecosystem multifunctionality in Bayanbulak alpine meadow along an altitude gradient

LÜ Zi-Li¹, LIU Bin¹^,^*(

), CHANG Feng¹, MA Zi-Jing¹, CAO Qiu-Mei²

图4. 巴音布鲁克高寒草甸海拔对功能多样性指数和态系统多功能性指数(EMF)影响的结构方程模型图。Alt, 海拔; FDis, 功能分散度; FEve, 功能均匀度; FRic, 功能丰富度; Rao’Q, Rao的二次熵。箭头旁边的数字为标准化路径系数(正值代表正效应, 负值表示负效应)。实线代表存在显著相关性，虚线代表不存在显著相关性。箭头的粗细代表显著性差异(粗代表显著性高, 细代表显著性低)。*, p < 0.05; **, p < 0.01; ***, p < 0.001。

Fig. 4. Structural equation model diagram of the effect of altitude on functional diversity index and ecosystem multifunctional index (EMF) in Bayanbulak alpine meadow. Alt, altitude; FDis, functional dispersion; FEve, functional uniformity; FRic, functional richness; Rao’Q, Rao’s quadratic entropy. The number next to the arrow in the plot is the normalized path coefficient (positive values represent positive effects, negative values represent negative effects). A solid line indicates a significant correlation, and a dashed line indicates no significant correlation. The thickness of the arrow represents significant difference (thick represents high significance, thin represents low significance). *, p < 0.05; **, p < 0.01; ***, p < 0.001.