结构方程模型及其在生态学中的应用

王酉石, 储诚进

A brief introduction of structural equation model and its application in ecology

WANG You-Shi, CHU Cheng-Jin

图2 结构方程模型中不同箭头类型和不同变量类型图示。a-g, 观察变量; I-L, 隐变量; M, 综合变量。ξ项表示隐变量上无法明确来源的效应, 而δ和ε表示观察变量上无法明确来源的效应。(改自Grace, 2006)

Fig. 2 The generic demonstration for the types of arrows and variables used in structural equation model. a-g: observed variables; I-L: latent variables; M: composite variable. The ξ terms refer to variables that represent unspecified effects on dependent latent variables, while δ and ε are variables that represent unspecified effects on observed variables. (Modified from Grace, 2006)