绿色基础设施的空间布局的多目标优化,在气候变化情景下进行成本效益分析
Xin Zhang1, Wen Liu2, Qi Feng2
1Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China.
The Science of the total environment
|July 19, 2024
概括
优化绿色基础设施 (GI) 尺寸,位置和连接可显著减少城市排水和峰值流量,优于仅优化尺寸和位置的战略. 这项研究为气候变化适应提供了具有成本效益的地理标志设计.
科学领域:
- 环境工程 环境工程
- 城市规划 城市规划
- 适应气候变化 适应气候变化
背景情况:
- 由于城市化和气候变化,城市洪水风险正在升级.
- 有效的绿色基础设施 (GI) 实施面临空间和财务限制,需要优化布局设计.
- 在气候变化下同时优化GI大小,位置和连接性对水文影响的理解有限.
研究的目的:
- 在气候变化场景下开发一个优化地理标志设施的大小,位置和连接的框架.
- 评估综合地理标志优化的水文效益和成本效益.
- 为城市规划决策提供信息,以提高气候变化适应能力.
主要方法:
- 一个新的框架,结合了修改的非主导分类遗传算法-II (NSGA-II) 和雨水管理模型 (SWMM).
- 同步优化胃肠道大小,位置和连接.
- 根据历史和预测的气候变化场景 (SSP) 进行分析.
主要成果:
- 优化GI尺寸,位置和连接,与仅优化尺寸和位置相比,增加了13.4%-24.5%的流量减少和3.3%-18%的峰值流量减少.
- 最佳的布局将建筑物屋顶的下水流向绿色空间.
- 透路面占道路地理标志实施面积的最大比例 (29.8%-54.2%).
- 平均成本效益有所改善,C/E值从16%/105元 (历史) 降至14.3%/105元 (SSP2-4.5) 和14%/105元 (SSP5-8.5).
结论:
- 同步优化地理标志尺寸,位置和连接,为城市洪水风险减轻带来了巨大的水文效益.
- 透路面是成本效益高的GI布局中的一个关键组成部分.
- 拟议的框架为设计可适应和具有成本效益的绿色基础设施解决方案提供了有价值的工具,以提高城市对气候变化的适应力.
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