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  11. Transforming Urban Air Quality: Green Infrastructure Strategies For The Urban Centers Of Ethiopia

Transforming urban air quality: Green infrastructure strategies for the urban centers of Ethiopia

Tikabo Gebreyesus1, Christian Borgemeister1, Cristina Herrero-Jáuregui2

  • 1Center for Development Research (ZEF), University of Bonn, Genscherallee 3, 53113 Bonn, Germany.

Environmental Pollution (Barking, Essex : 1987)
|November 6, 2024

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View abstract on PubMed

Summary
This summary is machine-generated.

Green infrastructure (GI) in Hawassa removes significant air pollutants, but some trees emit harmful biogenic volatile organic compounds (BVOCs). Optimized GI planning and species selection are crucial for improving urban air quality in Ethiopia.

Area of Science:

  • Environmental Science
  • Urban Planning
  • Atmospheric Chemistry

Background:

  • Urban green infrastructure (GI) is vital for improving air quality.
  • Ethiopia faces challenges with GI planning, potentially worsening air quality.
  • Limited awareness among planners hinders effective GI implementation.

Purpose of the Study:

  • To demonstrate how a GI strategy can enhance urban air quality in Ethiopia.
  • To assess the negative impacts of biogenic volatile organic compounds (BVOCs) from trees.
  • To use Hawassa as a case study for GI and air quality analysis.

Main Methods:

  • Utilized a customized i-Tree Eco model for pollutant removal and BVOC emission estimation.
  • Applied the Kriging method in ArcGIS for spatial distribution mapping.
Keywords:
Air pollution removalBVOC emissionEconomic valuesUrban areas

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  • Analyzed annual pollutant removal and BVOC emissions in Hawassa.

    • Main Results:

    • GI systems in Hawassa removed 274.2 tons of pollutants annually, valued at $1.79 million.
    • Pollutant removal was highest during the dry season (37.4%).
    • Trees emitted 35.78 tons of BVOCs annually, with Eucalyptus, Casuarina equisetifolia, and Schinus molle being major emitters.

    Conclusions:

    • Optimized species selection and GI planning are essential for maximizing air quality benefits.
    • Policy support is needed to integrate GI effectively into urban spatial planning.
    • Balancing pollutant removal with BVOC emissions is critical for sustainable urban environments.
    Urban green infrastructure
    i-Tree Eco Model