Abstract: Taking southern Shaanxi as a case study, based on the data from a large-scale questionnaire survey on the public perception of climate change risk response from 2015 to 2019, the characteristics and impact mechanism of climate change risk perception were revealed from four aspects, namely basic situation, human-earth view and risk view, environmental perception and response behavior, with the help of geographical detector. The results showed that the factor explanatory power of perceived coping effect was the highest （0.979）. The interaction between perception of climate change risk response effect and risk perception had the strongest factor influence, reaching 1.000. The perception of climate change causes, the concern of climate change, the perception of response effect, the perception of industrial structure adjustment, the perception of energy conservation and emission reduction effect, and the residential environment had obvious control effects on the perception of climate change risk response.

Key words: climate change risk perception, impact mechanism, geographic detector, southern Shaanxi