The concept of 'green infrastructure' has gained significant traction in urban planning as a means to mitigate the adverse effects of climate change. Unlike traditional gray infrastructure, which relies on concrete and steel to manage stormwater, green infrastructure employs natural systems such as permeable pavements, green roofs, and urban forests. These systems not only reduce flooding by absorbing rainwater but also improve air quality, lower urban heat island effects, and enhance biodiversity. However, the implementation of green infrastructure faces challenges, including higher initial costs and the need for specialized maintenance. Despite these obstacles, proponents argue that the long-term economic and environmental benefits outweigh the upfront investments. A recent study in Portland, Oregon, demonstrated that green infrastructure projects reduced stormwater runoff by up to 70% in targeted areas, while also increasing property values. Nevertheless, critics caution that without proper design and community engagement, such projects may fail to deliver expected outcomes, particularly in densely populated low-income neighborhoods.
❓ 根据文章所述,绿色基础设施支持者提出的主要论点是什么?
A. 绿色基础设施的建设成本低于传统的灰色基础设施。
B. 绿色基础设施带来的长期效益足以证明其较高的初期投入是合理的。
C. 绿色基础设施在低收入社区中效果最为显著。
D. 绿色基础设施完全消除了雨水管理的需求。
✅ 正确答案
Green infrastructure provides long-term benefits that justify its higher initial costs.