The concept of 'green infrastructure' has gained 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 utilizes natural processes such as soil absorption and plant transpiration. This approach not only reduces flooding but also improves air quality and provides habitats for urban wildlife. However, its implementation faces challenges, including higher upfront costs and the need for ongoing maintenance. Critics argue that without standardized performance metrics, the effectiveness of green infrastructure remains uncertain, making it difficult for policymakers to justify investments compared to conventional systems. Nevertheless, proponents contend that long-term benefits, such as reduced energy consumption and increased property values, outweigh initial expenses, especially in densely populated cities where space is limited.
❓ 批评者对于绿色基础设施提出的主要担忧是什么?
A. A. 长期维护成本过高。
B. B. 它缺乏明确的方法来衡量其有效性。
C. C. 它无法减少城市地区的洪水。
D. D. 在人口密集的城市中,它需要占用太多空间。
✅ 正确答案
B. It lacks clear methods to measure its effectiveness.