Interconnected Green Infrastructure Enhances Urban Sustainability in Historical Sites

Why It Matters

This research highlights the critical need to view green spaces not as isolated elements but as interconnected systems. For designers and urban planners, this means considering how to link parks, heritage sites, and natural features to create a more resilient and functional urban environment.

Key Finding

The study found that green spaces in Aksum are disconnected and in poor condition, with a dominance of built structures. A conceptual design for an interconnected green infrastructure network was proposed to address this.

Key Findings

• Green infrastructure in Aksum is fragmented and underdeveloped, particularly in heritage sites, cemeteries, and stream fronts.
• Satellite imagery analysis (NDVI and NDBI) indicated limited healthy vegetation and a predominance of built environments.
• The proposed conceptual design aims to create a cohesive green network by integrating various urban spaces.

Research Evidence

Aim: How can interconnected green infrastructure be designed to address the fragmentation of green spaces within urban historical sites and improve their environmental, social, and economic aspects?

Method: Mixed-methods research combining remote sensing (satellite imagery analysis) and qualitative data collection (public perception surveys).

Procedure: Satellite imagery was analyzed using NDVI and NDBI to quantify vegetation health and built-up areas. Public perception surveys were conducted to understand community views on existing green spaces. Based on these findings, a conceptual design for an interconnected green infrastructure network was developed.

Context: Urban planning and design in historical city contexts, specifically Aksum, Ethiopia.

Design Principle

Design for interconnectedness: Green infrastructure should be planned as a network rather than isolated elements to maximize ecological and social benefits.

How to Apply

When planning urban regeneration projects or new developments, map existing green spaces and identify opportunities to connect them through greenways, street trees, and integrated park systems.

Limitations

The study focused on a specific historical site and may not be directly generalizable to all urban contexts. The conceptual design requires further detailed engineering and implementation plans.

Student Guide (IB Design Technology)

Simple Explanation: This study shows that making green spaces in cities connect to each other, like a network, is better than having small, separate parks. This helps the environment and makes the city nicer for people, especially in old, historic places.

Why This Matters: Understanding how to create connected green infrastructure is crucial for designing sustainable urban environments that are resilient to climate change and enhance the quality of life for residents.

Critical Thinking: How might the specific historical context of Aksum influence the design and implementation of interconnected green infrastructure compared to a modern urban setting?

IA-Ready Paragraph: This research by Gebru (2023) highlights the critical role of interconnected green infrastructure in enhancing urban sustainability, particularly within historical contexts. By analyzing fragmented green spaces and proposing integrated networks, the study demonstrates how to improve environmental quality and social well-being. This approach is valuable for design projects aiming to create more resilient and cohesive urban environments.

Project Tips

• When researching green spaces, consider their connectivity and how they interact with the built environment.
• Use satellite imagery or mapping tools to analyze the distribution and health of green areas in your design project.

How to Use in IA

• Reference this study when discussing the importance of integrated green spaces in urban design projects, particularly those involving historical or sensitive areas.
• Use the findings on NDVI and NDBI as examples of how to quantitatively assess the state of green infrastructure.

Examiner Tips

• Demonstrate an understanding of how different urban elements (green spaces, buildings, infrastructure) can be integrated for better sustainability outcomes.
• Show how you have considered the connectivity of green spaces in your design proposals.

Independent Variable: ["Design of interconnected green infrastructure","Integration of various urban spaces (heritage sites, stream fronts, etc.)"]

Dependent Variable: ["Environmental quality (e.g., vegetation health)","Social aspects of urban life","Economic aspects of urban life","Interconnectivity of green spaces"]

Controlled Variables: ["Urban fabric characteristics","Existing green space conditions","Built environment density"]

Strengths

• Combines quantitative remote sensing data with qualitative public perception.
• Addresses a relevant issue of urban fragmentation in a specific, historically significant context.

Critical Questions

• What are the potential conflicts between preserving historical integrity and implementing new green infrastructure?
• How can the long-term maintenance and management of interconnected green infrastructure be ensured?

Extended Essay Application

• Investigate the potential for interconnected green infrastructure in a local historical area, using mapping and site analysis to propose design interventions.
• Research the ecological benefits of green corridors and their impact on biodiversity in urban settings.

Source

Creating Interconnected Outdoor Green Infrastructure in The Case of Aksum Historical Sites, Ethiopia · CSID Journal of Infrastructure Development · 2023 · 10.7454/jid.v6.i2.1122