Climate change has had a significant negative impact on socio-economic factors and the earth's ecology. To cope with climate change, many countries have employed various policies and measures to reduce damage due to climate change. For individual residents, adaptation behaviour is vital for reducing individual welfare losses. This research analysed how psychological determinants and other external factors influence residents' intention to adapt to climate change. We proposed an extended protection motivation theory (PMT) model, developed a reliable scale and conducted a nationwide field survey. We interviewed 1402 residents in 29 provinces, and 874 valid questionnaires were collected, providing data that were used in a structural equation model. The results show that our model can serve as a reliable framework for analysing the determinants of residents' intention to adapt to climate change. Policy is the most important factor for stimulating the formation of residents' adaptation intention. Risk appraisals and adaptation appraisals have positive and significant impacts on the intention of residents to adopt climate change adaptation behaviour. Information and climate perception do not directly influence residents' behavioural intentions but indirectly affect their intentions through the process of risk appraisal and adaptation appraisal. Corresponding policy suggestions are made that may be helpful for the formulation of adaptation policies.

气候变化对社会经济因素和地球生态产生了显着的负面影响。为应对气候变化，许多国家采取了各种政策和措施来减少气候变化造成的损害。对于个体居民而言，适应行为对于减少个体福利损失至关重要。本研究分析了心理决定因素和其他外部因素如何影响居民适应气候变化的意愿。我们提出了一个扩展保护动机理论 (PMT) 模型，开发了一个可靠的量表，并在全国范围内进行了实地调查。我们采访了29个省的1402名居民，收回了874份有效问卷，提供了用于结构方程模型的数据。结果表明，我们的模型可以作为分析居民适应气候变化意愿的决定因素的可靠框架。政策是刺激居民适应意愿形成的最重要因素。风险评估和适应评估对居民采取气候变化适应行为的意愿具有积极而显着的影响。信息和气候感知不直接影响居民的行为意向，而是通过风险评估和适应评估的过程间接影响他们的行为意向。提出相应的政策建议，可能有助于适应政策的制定。政策是刺激居民适应意愿形成的最重要因素。风险评估和适应评估对居民采取气候变化适应行为的意愿具有积极而显着的影响。信息和气候感知不直接影响居民的行为意向，而是通过风险评估和适应评估的过程间接影响他们的行为意向。提出相应的政策建议，可能有助于适应政策的制定。政策是刺激居民适应意愿形成的最重要因素。风险评估和适应评估对居民采取气候变化适应行为的意愿具有积极而显着的影响。信息和气候感知不直接影响居民的行为意向，而是通过风险评估和适应评估的过程间接影响他们的行为意向。提出相应的政策建议，可能有助于适应政策的制定。行为意向，但通过风险评估和适应评估的过程间接影响其意向。提出相应的政策建议，可能有助于适应政策的制定。行为意向，但通过风险评估和适应评估的过程间接影响其意向。提出相应的政策建议，可能有助于适应政策的制定。