在质性研究和已有文献基础上,本文提出了影响公众环境风险感知的"双因素假说",并对这一假说进行验证.通过"扎根理论"发现了影响公众环境风险感知的四个维度:环境亲和感、系统信任感、信息丰富性和利益趋向性.前两种属于情感因素,后两者属于情境因素.通过结构方程模型进一步证实,情感、情境因素都对公众环境风险感知具有显著影响.同时发现了信息丰富性与环境风险感知的倒"U"型关系,利益趋向性对公众的环境风险感知具有决定性影响等结果.%Paying attention to the factors that affect the perception of environmental risks is not only an urgent need for effective environmental risk management but also a leading issue vital to social governance .This study puts forward a hypothesis of two-factor theory about public environmental risk perception and validates the hypothesis through quantitative research . Grounded theory is applied toidentify four dimensions that influence public environmental risk perception : environmental affinity , system trust , information richness and interest orientation .The first two deal with emotional factors and the latter two situational factors .These factors are quantitatively examined by using the structural equation model to determine whetherthey have a significant impact on the public environmental risk perception .The study yieldssome interesting findings .First ,the four emotional and situational factors all affect environmental risk perception .Second , the impact of environmental affinity on public environmental risk perception is weak and its effect is often related to the environmental concerns of individuals .Third , system trust has a strong negative impact on environmental risk perception . Fourth ,the correlation between information richness and environmental risk perception is not significant ,however ,once revised as "highly relevant ," the impact of information richness on environmental risk perception becomes a nonlinear correlation ,exercising strong influence on public environmental risk perception.Fifth ,the recognition of self-interest is the decisive factor affecting public environmental risk perception .
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