A holistic framework for assessing co-benefits of street-scale green infrastructure interventions

核心城市地区往往由街道峡谷组成，由于周围建筑限制了交通排放的分散，因此是污染最严重的城市环境之一。在城市地区使用绿色基础设施（GI），如路边树篱、树木和绿墙/屋顶，可以帮助减少交通排放，还可以提供许多其他的协同效益，包括改善热量、减少噪音和增加生物多样性。然而，所有这些好处都对当地环境非常敏感，规划不当的地理标志可能会使情况恶化或实现有限的共同利益。因此，本项目将采用实验、建模和文献综述相结合的方法来解决以下问题：污染减排与地理特征提供的其他协同效益（冷却、噪音缓解和生物多样性）之间的权衡是什么？在不同的规模（街道规模到城市规模）是否存在不同的权衡？这些权衡是完全特定于上下文的，还是可以推导出一般化的关系来帮助规划人员最好地利用GI？通过上述问题的答案产生的所有知识将用于开发一个易于使用的基于证据的评估框架，该框架有助于规划小规模地理标志特征的多重协同效益，考虑到当地的情况，这是城市区域规划中迫切需要的。

A holistic framework for assessing co-benefits of street-scale green infrastructure interventions Core urban areas tend to bemade up of street canyons and are among the most polluted urban environments due to the restricted dispersion of trafficemissions by the surrounding buildings. The use of green infrastructure (GI) such as roadside hedges, trees, and greenwalls/roofs in urban areas can help to abate the exposure to traffic emissions and also offer many other co-benefitsincluding heat amelioration, noise reduction and increased biodiversity. However, all these benefits are very sensitive to thelocal context, and poorly planned GI can worsen situations or achieve limited co-benefits. Therefore, this project will use acombination of experiments, modelling and literature review to address the following questions: What are the trade-offsbetween pollution abatement and other co-benefits provided by GI (cooling, noise mitigation and biodiversity)? Arethere different trade-offs at different scales (street scale to city scale)?... Are these trade-offs completely context-specific,or can generalisable relationships be derived to help planners make the best use of GI? All the knowledge generatedthrough the answers to the above questions will be used to develop an easy to use evidence-based assessmentframework that helps to plan multiple co-benefits for small scale GI features, accounting for local contexts, which is sorelyneeded in urban area planning.