Mitigation of anthropogenic climate change takes place against the backdrop of poor countries being most affected by climate change impacts; climate-induced migration is expected to increase in the future. However, the interaction between mitigation, climate migration and poverty has not been investigated explicitly. Here, we represent simultaneous poverty- and climate-induced migration in a laboratory setting, within the collective-risk social dilemma that arises from attempts to avert dangerous climate change. The relatively rich participants try to prevent migration by the relatively poor but in the long run these attempts are unsuccessful because of free-riding among the rich. The rich are willing to increase their effort at averting dangerous climate change when the poor are hit by a climate extreme event exacerbating their poverty. Conversely, the poor are willing to compensate some weaker effort by the rich, as long as the effort by the rich lies above a threshold emerging within the experiment.

在贫穷国家受气候变化影响最大的背景下，减轻了人为的气候变化；预计气候导致的迁徙将在未来增加。但是，缓解，气候迁移和贫困之间的相互作用尚未得到明确研究。在这里，我们代表了在实验室环境中同时发生的由贫困和气候引起的迁徙，这是由于避免危险的气候变化而引起的集体风险社会困境。相对富裕的参与者试图阻止相对贫困的人迁移，但从长远来看，由于富人之间的搭便车，这些尝试都没有成功。当穷人遭受加剧其贫困的气候极端事件的打击时，富人愿意加大努力避免危险的气候变化。