Governments around the world are beginning to plan for the effects of climate change. In Philadelphia, Pennsylvania, USA, the city is implementing a variety of green infrastructure practices through the program Green Cities, Clean Waters to meet state and federal stormwater regulations. Though not a current goal of the program, when implemented effectively, a cobenefit of green infrastructure is increased local resilience to potential ecosystem alterations, such as increasing summer temperatures and heavier precipitation, also defined as climate change adaptation. We analyzed the potential of the Green City, Clean Waters plan to increase the city’s resilience to the future consequences of climate change. Three future landcover models of Philadelphia were used to analyze climate change adaptation through green infrastructure in the near term, midcentury, and end of century under two climate change scenarios. Green infrastructure was overall found to locally decrease runoff throughout Philadelphia over time. Green infrastructure impact on surface temperature showed mixed results. Impact on runoff and surface temperature differed between types of green infrastructure. As the city is forecasted to grow warmer, wetter, and more urbanized over the century, runoff and local temperatures will increase on average throughout the city, despite the planned growth in green infrastructure. If increased resilience is to keep pace with climate change, the city government will need to expand its green infrastructure plan and consider the cobenefit of climate change adaptation when planning new projects. Additionally, for true climate change resiliency to be achieved, green infrastructure implementation must be connected to citywide greening efforts, accelerate and continue beyond the near term for localities to function as they do today.

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城市发展和当前绿色基础设施政策对未来气候变化适应力的影响

世界各国政府已开始计划应对气候变化的影响。在美国宾夕法尼亚州的费城，该市正在通过“绿色城市，清洁水源”计划实施各种绿色基础设施实践，以满足州和联邦雨水法规的要求。尽管不是该计划的当前目标，但如果有效实施，绿色基础设施的优势就是增强了当地对潜在生态系统变化的适应力，例如夏季气温升高和降水增加，也被定义为适应气候变化。我们分析了绿色城市清洁水区计划的潜力，以增加城市对气候变化未来后果的适应力。费城采用了三种未来的土地覆盖模型，以通过近期的绿色基础设施分析气候变化的适应性，在两种气候变化情景下的世纪中叶和世纪末。总体来看，绿色基础设施会随着时间的推移局部减少整个费城的径流。绿色基础设施对地表温度的影响喜忧参半。不同类型的绿色基础设施对径流和地表温度的影响不同。尽管预计该城市在一个世纪内将变得更加温暖，湿润和城市化，尽管计划中的绿色基础设施有所增加，但整个城市的径流和当地温度仍将平均上升。如果要增强抵御能力以跟上气候变化的步伐，市政府将需要扩展其绿色基础设施计划，并在计划新项目时考虑适应气候变化的益处。此外，要实现真正的气候变化适应力，