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22 July 2025 | Story Nontobeko Nxumalo | Photo Supplied
Mandela Day
The DiMTEC team marked Mandela Day by planting indigenous trees on campus, promoting sustainability and community resilience through nature-based solutions.

The University of the Free State’s (UFS) Centre for Disaster Management Training and Education Centre (DiMTEC) commemorated Nelson Mandela International Day on 18 July by planting trees that help embed nature-based solutions at the heart of disaster risk reduction and climate change adaptation.

“It’s a simple act, yet deeply symbolic – a commitment to sustainability, climate resilience, and future generations,” said Dr Tlou Raphela-Masuku, a Senior Lecturer at DiMTEC. “Nature-based solutions, such as planting indigenous trees, are not just theoretical strategies; they are practical tools to reduce disaster risk, restore ecosystems, and build community resilience.” 

One of the trees planted, the indigenous, resilient Wild Olive (Olea europaea subsp. africana), known locally as Mohlware, embodies the drive to place nature-based solutions at the forefront of disaster risk reduction. “This tree is drought-tolerant and well-adapted to Bloemfontein’s semi-arid climate,” Dr Raphela-Masuku explained. “It stabilises soil, prevents erosion, supports biodiversity, and cools urban spaces. Its thick canopy shelters birds and small mammals, while its deep roots nourish and protect the earth. In a warming world, every Wild Olive planted is a small act of resistance against climate change.” 

 

Collaborative programme

Dr Raphela-Masuku said the tree-planting programme, a collaboration with UFS Protection Services and University Estates, ties directly into the principles the centre teaches in its Master's of Disaster Management module Ecosystem-Based Disaster Risk Reduction (ECO-DRR). 

“From the viewpoint of the African Union’s Science and Technology Advisory Group, it is befitting that as part of the work dedicated to disaster risk reduction initiatives in the African continent, this day is a reminder that we promote community service, resilience and social justice in the ‘Africa we want’. Furthermore, Mandela Day activities align with the Sendai Framework for Disaster Risk Reduction (SFDRR)’s priorities of understanding risks and strengthening disaster governance at all levels,” remarked Prof Alice Ncube, an Associate Professor at DiMTEC.

She added that, “In a city like Bloemfontein, which is not exempt from drought accelerating frequently and temperatures rising yearly, choosing to plant climate-resilient, indigenous species isn’t merely wise, it’s necessary. Trees like the Wild Olive don’t just provide shade and beauty; they help cool urban environments, support biodiversity, and protect our university community from floods and storms. They represent a forward-thinking investment in a sustainable, climate-adapted future. Mandela Day reminds us that service should be continuous, not confined to a single day. A tree planted today will outlive us, offering shade, shelter, and hope to those who come after. As Mandela himself said, ‘The true meaning of life is to plant trees under whose shade you do not expect to sit.’”

 

Commitment to change

Mandela Day also fits in with the UFS’ Vision 130 strategic intent. It is a day that reminds us that everyone has the power to make a difference. In the spirit of Madiba’s legacy, we can commit to fostering social justice, human dignity, and sustainable development through academic excellence and meaningful community engagement. In the face of climate change, biodiversity loss, and environmental degradation, each seed we plant becomes an act of defiance as well as an act of hope.

Prof Samuel Adelabu, Vice-Dean: Postgraduate and Research in the Faculty of Natural and Agricultural Sciences, applauded the team’s efforts. “We are planting trees that represent sustainability, things that can stay for long. I believe we are all practising sustainability in this initiative we are doing today to show that the university, as well as the faculties, are in line with sustainability.” 

News Archive

Water erosion research help determine future of dams
2017-03-07

Description: Dr Jay le Roux Tags: Dr Jay le Roux

Dr Jay le Roux, one of 31 new NRF-rated
researchers at the University of the Free State,
aims for a higher rating from the NRF.
Photo: Rulanzen Martin

“This rating will motivate me to do more research, to improve outcomes, and to aim for a higher C-rating.” This was the response of Dr Jay le Roux, who was recently graded as an Y2-rated researcher by the National Research Foundation (NRF).

Dr Le Roux, senior lecturer in the Department of Geography at the University of the Free State (UFS), is one of 31 new NRF-rated researchers at the UFS. “This grading will make it possible to focus on more specific research during field research and to come in contact with other experts. Researchers are graded on their potential or contribution in their respective fields,” he said.

Research assess different techniques
His research on water erosion risk in South Africa (SA) is a methodological framework with three hierarchal levels presented. It was done in collaboration with the University of Pretoria (UP), Water Research Commission, Department of Agriculture, Forestry and Fisheries, and recently Rhodes University and the Department of Environmental Affairs. Dr Le Roux was registered for 5 years at UP, while working full-time for the Agricultural Research Council – Institute for Soil, Climate and Water (ARC-ISCW).

Water erosion risk assessment in South Africa: towards a methodological framework
, illustrates the most feasible erosion assessment techniques and input datasets that can be used to map water erosion features in SA. It also emphasises the simplicity required for application at a regional scale, with proper incorporation of the most important erosion-causal factors.

The main feature that distinguishes this approach from previous studies is the fact that this study interprets erosion features as individual sediment sources. Modelling the sediment yield contribution from gully erosion (also known as dongas) with emphasis on connectivity and sediment transport, can be considered as an important step towards the assessment of sediment produce at regional scale. 
 
Dams a pivotal element in river networks

Soil is an important, but limited natural resource in SA. Soil erosion not only involves loss of fertile topsoil and reduction of soil productivity, but is also coupled with serious off-site impacts related to increased mobilisation of sediment and delivery to rivers.

The siltation of dams is a big problem in SA, especially dams that are located in eroded catchment areas. Dr Le Roux recently developed a model to assess sediment yield contribution from gully erosion at a large catchment scale. “The Mzimvubu River Catchment is the only large river network in SA on record without a dam.” The flow and sediment yield in the catchment made it possible to estimate dam life expectancies on between 43 and 55 years for future dams in the area.
 
Future model to assess soil erosion
“I plan to finalise a soil erosion model that will determine the sediment yield of gully erosion on a bigger scale.” It will be useful to determine the lifespan of dams where gully erosion is a big problem. Two of his PhD students are currently working on project proposals to assess soil erosion with the help of remote sensing techniques.

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