Sea level rise and urbanization exert complex synergistic pressures on the provision of ecosystem services (ES) in coastal regions. Anticipating when and where both biophysical and cultural ES will be affected by these two types of coastal environmental change is critical for sustainable land-use planning and management. Biophysical (provisioning and regulating) services can be mapped using secondary data. We demonstrate an approach to mapping cultural ES by engaging stakeholders in iterative participatory mapping of personally and communally valuable cultural ES. We identify hotspots where highly valued cultural ES and high values for biophysical ES co-occur and generate spatially-explicit projections of sea level rise and urban expansion through 2060 to quantify impacts of the ‘coastal squeeze’ on ES. We study Johns Island, South Carolina, USA as an example of a vulnerable community in a low-lying region experiencing both rising water levels and a rapid influx of new residents and development. Our projections of environmental change through 2060 indicate that on Johns Island, cultural ES face disproportionately greater risk of decline than biophysical ES, with almost three quarters of the island’s cultural ES affected. We find that hotspots for cultural ES, such as community heritage sites and scenic vistas of oak-lined roads and marshes, rarely co-occur (only 3% area) with biophysical ES such as high values of carbon sequestration and agricultural production. This confirms the importance of engaging with local stakeholders to map cultural ES and puts them on a more level playing field with biophysical ES in decision-making contexts. Projected declines and limited overlap between biophysical and cultural ES highlight the need for tighter coordination between conservation and community planning, and for including locally valued cultural ES in assessments of threats posed by the ‘coastal squeeze’ of sea level rise and urban expansion.

海平面上升和城市化对沿海地区的生态系统服务（ES）提供了复杂的协同压力。预计生物物理和文化生态系统的何时何地都将受到这两种类型的沿海环境变化的影响，这对于可持续的土地利用规划和管理至关重要。可以使用辅助数据来映射生物物理（提供和调节）服务。我们演示了通过让利益相关者参与对个人和社区有价值的文化ES进行迭代参与式映射来绘制文化ES的方法。我们确定高价值文化ES和生物物理ES的高价值并存的热点，并生成到2060年海平面上升和城市扩张的空间明晰的预测，以量化“沿海挤压”对ES的影响。我们研究南卡罗来纳州的约翰斯岛，美国是一个处于低洼地区的脆弱社区的例子，该地区水位不断上升，新居民和发展迅速涌入。我们对到2060年的环境变化的预测表明，约翰斯岛的文化ES面临比生物物理ES更大的衰退风险，该岛近四分之三的文化ES受到影响。我们发现，文化ES的热点，例如社区遗迹和橡树成荫的道路和沼泽地的风景远景，很少与生物物理ES并存（仅占3％的面积），例如高固碳和农业生产。这证实了与当地利益相关者合作绘制文化ES的重要性，并使他们在决策环境中与生物物理ES处于更平等的竞争环境。