Adaptation and mitigation in urban areas: synergies and conflicts

摘要

Following the introduction of the national Climate Change Programme, initiatives that seek to mitigate greenhouse gas (GHG) emissions are now well established in the UK. However, there is increasing recognition that adaptation to some level of climate change will be necessary, even if a reduction in emissions is successful. This is inevitable as much of the predicted climate changes over the next 30-40 years have already been predetermined by past and present emissions of GHGs. Change is likely to be significant. Understanding what the risks are likely to be and how best to adapt to them is therefore central to any mature climate change strategy. However, the inevitable linkages between adaptation and mitigation measures represent a particular challenge. Focusing on the consequences of climate change for the urban environment (where most of the population is concentrated and where its impact is likely to be most keenly felt), this paper suggests preferred adaptation options and provides an evaluation of how these may act to reinforce or hamper mitigation efforts. For example, moves towards urban densification may contribute to the reduction of energy use, yet will have negative implications for adaptation. Having a better understanding of the synergies, conflicts and trade-offs between mitigation and adaptation measures would make a valuable contribution to a more integrated climate policy and the effective climate-proofing of our towns and cities.