Analyzing Spatio-Temporal Dynamics And Urban Sprawl In Akaki Kality Sub-City, Addis Ababa, Ethiopia Using Geo-Spatial Technologies.

Abstract

Land Use And Land Cover Are Dynamically Changing In Ethiopia, With Significant Implications For Environmental Sustainability And Urban Development. The Rapid Urbanization Of Recent Decades Has Resulted In Many Regions Experiencing Seemingly Uncontrolled Land-Use Changes (Lucs), Accompanied By Various Environmental And Socio-Economic Challenges. Rapid Urbanization And Population Growth Have Exerted Considerable Pressure On Land Resources In Many Cities, Leading To Environmental Degradation And Loss Of Agricultural Land. This Study Investigates The Spatio-Temporal Dynamics And Urban Sprawl Trends In Akaki Kality Sub-City, Addis Ababa, Over A Period Of 16 Years (2003-2019). Located On The Periphery Of Addis Ababa, Akaki Kality Exhibits A Dynamic Nature Of Land Use And Land Cover. The Study Utilized Gis Techniques And Remote Sensing To Analyze The Spatio-Temporal Dynamics And Urban Sprawl Trends In Akaki Kality. To Obtain An Orthomosaic Image For The Analysis, High-Resolution Satellite Imagery From 2003(50 Cm ) Was Utilized Alongside Aerial Images From 2011 (20cm) And 2019 (10cm). The Varying Resolutions Provided A Comprehensive View Of Land Use And Urban Sprawl Dynamics Over Time, Enabling A Detailed Assessment Of Spatio-Temporal Changes In Akaki Kality. The Researcher Utilized Geographic Information System (Gis) Tools,E Cognition, And Erdas Imagine, To Extract And Classify The Multi-Temporal Images Of The Study Area. The Results From 2003 To 2019 Indicate Significant Changes In Land Use Over The 16-Year Period. The Analysis Revealed A Substantial Increase In Built-Up Areas, Rising From 32.9% In 2003 To 62.8% In 2019, At The Expense Of Farmland, Which Decreased From 59.3% To 26.9% During The Same Period. Bare Land And Vegetation Cover Showed Minor Fluctuations, While Water Bodies Experienced A Decline From 1.7% To 1.0%. Akaki Kality Experiences Severe Urban Sprawl Patterns Characterized By Leapfrog Development, Edge Sprawl, And Suburban/Low-Density Sprawl Across The Study Periods. Leapfrog Development Shows Isolated Built-Up Clusters Surrounded By Vacant Land, While Edge Eprawl Extends Urban Areas Outward Into Rural Spaces. Suburban Sprawl Features Low-Density Residential Developments With Large Undeveloped Areas Between Built-Up Zones. These Patterns Contribute To Inefficient Land Use, Environmental Degradation, And Economic Challenges, Driven Primarily By Population Pressure, Industrial Establishment, And Economic Factors.