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Updated: May 21, 2025
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Predicting the Effectiveness of Population Replacement Strategy Using Mathematical Modeling
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Modelling bush encroachment dynamics using Intensity Analysis and the Cellular Automata model.
Ntuthuko Prosperous Mncwabe1, John Odindi2, Trylee Nyasha Matongera3
1Discipline of Geography and Environmental Science, School of Agricultural Earth and Environmental Sciences, University of KwaZulu-Natal, Scottsville, Pietermaritzburg, 3209, South Africa. 218003689@stu.ukzn.ac.za.
Environmental Monitoring and Assessment
|March 18, 2025
Summary
Bush encroachment is increasing, threatening grasslands and biodiversity. Future projections show continued expansion, necessitating urgent management strategies for landscape restoration and conservation efforts.
Area of Science:
- Ecological dynamics and land cover change analysis.
- Remote sensing applications in environmental monitoring.
- Conservation science and protected area management.
Background:
- Bush encroachment poses a global threat to grasslands, biodiversity, and ecosystem services.
- Understanding encroachment dynamics is crucial for effective conservation and land management.
- Previous studies highlight the negative impacts of woody vegetation expansion on ecological integrity.
Purpose of the Study:
- To comprehensively analyze past, present, and future bush encroachment trends.
- To quantify land cover transitions and their drivers within a protected area.
- To inform management strategies for grassland restoration and biodiversity conservation.
Main Methods:
- Utilized RapidEye and PlanetScope satellite imagery for land cover analysis.
- Applied Intensity Analysis to assess historical encroachment patterns (2009-2023).
- Employed the Cellular Automata (CA) model for projecting future encroachment (2028, 2033).
Main Results:
- Bush encroachment shows a continuous increasing trend within the study area.
- Significant land cover changes were observed, with woody vegetation expanding at the expense of grasslands.
- Future projections indicate a 5.50% and 6.67% increase in bush encroachment by 2028 and 2033, respectively.
Conclusions:
- The study underscores the escalating threat of bush encroachment to grassland ecosystems.
- Findings necessitate an urgent reassessment and enhancement of current management schemes.
- Insights into encroachment trends support informed decision-making for landscape restoration and conservation.
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