在塞拉利昂的弗里敦调查灾害风险管理和气候变化适应效率
Edwin Sam-Mbomah1,2, Ksenia Chmutina1, Alister Smith3
1Department of Water Engineering Development Centre, School of Architecture, Building and Civil Engineering, Loughborough University, Leicestershire, United Kingdom.
Jamba (Potchefstroom, South Africa)
|September 12, 2025
概括
塞拉利昂弗里敦的灾害风险管理和气候变化适应政策显示出系统性缺陷. 有效的干预措施需要加强框架,社区参与和改善城市规划,以提高恢复力.
科学领域:
- 环境科学 环境科学
- 城市规划 城市规划
- 灾害管理 灾害管理
背景情况:
- 塞拉利昂的弗里敦面临着不断升级的气候变化加剧的风险,如洪水和山体滑坡.
- 现有的灾害风险管理 (DRM) 和气候变化适应 (CCA) 政策的有效性受到质疑.
研究的目的:
- 评估DRM和CCA政策的过渡,从意图到在弗里敦的有效实施.
- 在五个非正式的定居点中,确定政策执行的推动因素和障碍.
主要方法:
- 采用了一个案例研究方法.
- 对灾难背景,政策框架和实施过程进行批判性审查.
- 在五个非正式定居点进行了分析:克罗湾,苏珊湾,库尔维特,科勒镇和达瓦扎克.
主要成果:
- 在DRM和CCA中发现的系统性缺陷,包括弱势的机构,缺乏协调和不充分的执法.
- 障碍包括有限的数据访问,不有效的风险沟通,社区参与不足和腐败.
- 还注意到城市规划不足,研究和技术投资不足.
结论:
- 加强政策和制度框架对于有效的DRM和CCA至关重要.
- 建议采取综合规划,社区主导的弹性,加强风险评估和强大的预警系统.
- 通过研究和技术促进创新是建立弗里敦抗灾能力的关键.
相关概念视频
Applications of GIS: Disaster Management and Emergency Response
476
Geographic Information System (GIS) technology is essential for risk identification, action prioritization, and resource optimization in critical situations like flooding and earthquakes. By integrating spatial and demographic data, GIS provides a comprehensive framework for emergency response.GIS integrates data layers, like rainfall intensity, topography, elevation profiles, and river levels, to model high-risk flood zones. These layers assess areas susceptible to flooding based on their...
476
What is Climate?
20.5K
Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.
20.5K
Responses to Drought and Flooding
11.9K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
11.9K
Design Example: Analyzing Capacity Contours for Flood Risk Assessment
286
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
286
Global Climate Change
28.7K
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
28.7K
Design Example: Managing Concrete Workability
302
This example deals with managing the workability of concrete for a raft foundation project under hot weather conditions. Workability is crucial for ensuring the concrete is easy to place, compact, and finish. In this scenario, a slump test — a common method to measure the workability of fresh concrete — initially indicated low workability. This was attributed to the rapid water loss from the concrete mix, exacerbated by the high temperatures causing the course aggregates to heat up.
302


