在邦克山提供经济适用房的同时减少城市热岛效应

K. Atherton, V. Dambal, T. Miller, I. Smith, Jessie D. Wright
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引用次数: 0

摘要

邦克山公共住房开发项目是一座历史悠久的公共住房建筑,居住着大量的种族和少数民族人口,需要进行大规模的重建和维修,以提高居民的安全。波士顿规划和发展署(BPDA)最近批准了一项价值14.6亿美元的重建计划,其中一部分用于拆除和更换公共住房单元周围约250棵成熟的树木。砍伐这些树木会对已经脆弱的人口造成更大的影响,使他们更容易受到高温事件的影响,包括与热有关的压力、发病率和死亡率,这些将在未来几年随着气候变化而恶化。虽然BPDA的提案试图通过重新种植更多的树木来解决该地区由于缺乏植被而已经经历了20%的降温的问题,但他们估计的树冠恢复到目前的大小需要十多年的时间,这令人担忧。为了减轻因砍伐树木而增加的热应力,我们建议在整个发展项目的建筑物上安装绿色屋顶。这些绿色屋顶将继续提供冷却和有益的社区服务,即使一旦树冠恢复。这些措施将作为一个适当的权宜之计,直到树冠可以恢复大小和扩大,并为社区提供相同的共同利益,如空气质量的改善,噪音污染的减少,社区空间,和当地种植的食物从社区花园,城市的富裕地区已经体验到。安装绿色屋顶和补充植被将只占整个重建项目预算的0.25%,并将在社区健康方面有很大的回报。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Reducing Urban Heat Island Effects While Providing Affordable Housing in Bunker Hill
The Bunker Hill Public Housing development is a historic public housing building, home to a large population of racial and ethnic minorities, that requires major redevelopment and repair to enhance the safety of its residents. The Boston Planning and Development Agency (BPDA) recently approved a $1.46 billion redevelopment for the property, a part of which is allocated to remove and replace ~250 mature trees around the public housing units. Removal of these trees would affect an already vulnerable population significantly more exposed to the effects of heat events, including heat-related stress, morbidity, and mortality, which will worsen with climate change in the coming years. While the BPDA proposal seeks to address the issue that the area already experiences 20% less cooling due to a lack of vegetation by replanting more trees, their estimated timescale of more than a decade for the canopy to just return to its current size is concerning. In order to mitigate the added heat stress caused by the tree removal, we propose the supplementary action of installing green roofs on buildings throughout the development. These green roofs would continue to provide cooling and beneficial community services even once the tree canopy has returned. These measures will serve as an appropriate stopgap measure until the canopy can return to size and expand as well as providing the community with the same co-benefits, such as air quality improvement, noise pollution reduction, community spaces, and locally grown food from community gardens, that more affluent parts of the city already experience. The installation of green roofs and supplemental vegetation will take only 0.25% of the entire redevelopment project budget and will have a large return in community wellness.
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