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Browsing by Subject "Land degradation"

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Apportioning human-induced and climate-induced land degradation: A Case of the Greater Sekhukhune District Municipality

Author: Kgaphola, Motsoko J ; Ramoelo, Abel ; Odindi, J ; Mwenge Kahinda, Jean-Marc ; Seetal, Ashwin R Date: Mar 2023 Land degradation (LD) is a global issue that affects sustainability and livelihoods of approximately 1.5 billion people, especially in arid/semi-arid regions. Hence, identifying and assessing LD and its driving forces (natural and anthropogenic) ... Read more
Assessing degradation across a land-use gradient in the Kruger National Park area using advanced remote sensing modalities

Author: Van Aardt, JAN ; Mathieu, Renaud SA ; Cho, Moses A ; Wessels, Konrad J ; Erasmus, B ; Asner, GP ; Smit, IPJ Date: 2011 Land degradation is regarded as one of the most important environmental issues facing sub-Saharan Africa and is especially relevant in the former communal ‘homeland’ areas of South Africa. Although it has been a topic of intense research, ... Read more
Can linear trend analyses of NDVI time series data truly detect land degradation? Simulations may provide the answer

Author: Wessels, Konrad J ; Van den Bergh, F ; Scholes, RJ ; Miteffa, S Date: Apr 2011 There has been a recent proliferation of remote sensing-based trend analysis for monitoring regional desertification. These show contradictory results. All of them claim to have been “validated” through expert interpretation, in the absence ... Read more
Causes and perspectives of land-cover change through expanding cultivation in Kavango

Author: Pröpper, M ; Gröngröft, A ; Falk, T ; Eschenbach, A ; Fox, T ; Gessner, U ; Hecht, J ; Hinz, MO ; Huettich, C Date: 2010 With this interdisciplinary case-study we deliver an integrated analysis concerning the problem of expansive cultivation impacting on biodiversity in the dry Woodland Savanna of the Kavango Region of Namibia. We quantify and visualise the ... Read more
Climate change and desertification in South Africa – science and response

Author: Archer, Emma RM ; Tadross, MA Date: 2009 Despite significant attention paid to desertification and climate change in the last few decades, interactions between the phenomena, as well as implications thereof, have received less of a focus. Such a trend is particularly marked in the ... Read more
Distinguishing between human-induced land degradation from effects of rainfall: Case of The Greater Sekhukhune District Municipality

Author: Kgaphola, Motsoko J ; Ramoelo, Abel ; Odindi, John ; Mwenge Kahinda, Jean-Marc ; Seetal, Ashwin R Date: Nov 2022 Land degradation (LD) is a global issue that affects the sustainability and livelihoods of approximately 1.5 billion people, especially in arid/semi-arid regions. Assessing and identifying LD, especially driven by anthropogenic activities, ... Read more
Dryland systems

Author: Wessels, Konrad J Date: 2006 This chapter describes the current condition of dryland systems with respect to the services they provide and the drivers that determine trends in their provision. Within the context of the mounting global concern caused by land degradation ... Read more
Ecosystem services, land-cover change, and stakeholders: finding a sustainable foothold for a semiarid biodiversity hotspot

Author: Reyers, B ; O'Farrell, Patrick J ; Cowling, RM ; Egoh, Benis N ; Le Maitre, David C ; Vlok, JHJ Date: 2009 Land-cover change has been identified as one of the most important drivers of change in ecosystems and their services. However, information on the consequences of land cover change for ecosystem services and human well-being at local scales ... Read more
Impact of land use and land cover change on land degradation in rural semi-arid South Africa: Case of the Greater Sekhukhune District Municipality

Author: Kgaphola, Motsoko J ; Ramoelo, A ; Odindi, J ; Mwenge Kahinda, Jean-Marc ; Seetal, Ashwin R ; Musvoto, Constansia D Date: May 2023 In semi-arid regions, interactions between biophysical and socio-economic variables are complex. Such interactions and their respective variables significantly alter land use and land cover, degrade landscape’s structure, and impede the ... Read more
Impacts of Land Use Land Cover Change on Land Degradation: Case of the Greater Sekhukhune District

Author: Kgaphola, Motsoko J ; Ramoelo, A ; Odindi, J ; Mwenge Kahinda, Jean-Marc ; Seetal, Ashwin R Date: Oct 2021 Interaction between biophysical variables and socioeconomic conditions are far more complex and affect land cover and quality. These are aggravated by global climate change and climate variability in semi-arid regions. Therefore, the study ... Read more
Land

Author: Audouin, Michelle A Date: Jan 2007 Unsustainable agricultural practices have had a role to play in the degradation of land on which agriculture depends. South Africa has an international obligation to develop a National Action Programme (NAP), the purpose of which is to identify ... Read more
Land degradation mapping for modelling of ecosystem benefit flows in the Inkomati catchment using remote sensing.

Author: Ramoelo, Abel ; Munyati, C ; Lück-Vogel, Melanie ; Le Maitre, David C ; Van Aardt, J Date: Sep 2007 Land degradation is of great concern in South Africa particularly in the Inkomati catchment. Here a mosaic of different land use types such as plantation agriculture, subsistence farming, irrigated commercial farming, rural and urban settlements, ... Read more
Letter to the editor: Comments on ‘Proxy global assessment of land degradation’ by Bai et al. (2008)

Author: Wessels, Konrad J Date: Mar 2009 There is an urgent need for a quantitative, repeatable measure of land degradation and remote sensing provides the only viable option at a regional to global scale. It is therefore commendable that Bai et al. (2008) attempted to use remote ... Read more
Limits to detectability of land degradation by trend analysis of vegetation index data

Author: Wessels, Konrad J ; Van den Bergh, F ; Scholes, RJ Date: Oct 2012 This paper demonstrates a simulation approach for testing the sensitivity of linear and non-parametric trend analysis methods applied to remotely sensed vegetation index data for the detection of land degradation. The intensity, rate and ... Read more
Linking ecosystem services and water resources: landscape-scale hydrology of the Little Karoo

Author: Le Maitre, David C ; Milton, SJ ; Jarmain, C ; Colvin, C ; Saayman, I ; Vlok, JHJ Date: Jul 2007 There is growing acknowledgement of the dependence of human society on ecosystem services and of the fact that service delivery is being compromised by human impacts on ecosystems. This paper describes the linkage between landscape-scale ... Read more
Monitoring land degradation with long-term satellite data

Author: Wessels, Konrad J Date: 2011 In South Africa, land degradation in rangelands has been regarded as a major environmental problem for many years. During the last ten years, attention focussed on the land degradation in the former homelands, now communal lands. There is an ... Read more
Monitoring land degradation with long-term satellite data in South Africa.

Author: Wessels, Konrad J ; Prince, S Date: 2007 Desertification is defined by the United Nations Convention to Combat Desertification (UNCCD) as ‘land degradation in arid, semi-arid and dry sub-humid areas (dry-lands) resulting from various factors, including climatic variations and human ... Read more
Relevance of rangeland degradation in semiarid Northeastern South Africa to the nonequilibrium theory

Author: Wessels, Konrad J ; Prince, SD ; Carroll, M ; Malherbe, Johan Date: Apr 2007 According to the nonequilibrium theory, livestock grazing has a limited effect on long-term vegetation productivity of semiarid rangelands, which is largely determined by rainfall. The communal lands in northeastern South Africa contain ... Read more
Responses to halt land degradation and to restore degraded land

Author: Pandit, R ; Parrota, J ; Anker, Y ; Coudel, E ; Diaz Morejón, CF ; Harris, J ; Karlen, DL ; Kertész, A ; Mariño De Posada, JL ; Ntshotsho, Phumza Date: Mar 2018 The most cost-effective approach to reduce land degradation in the long run is to follow the adage “prevention is better than cure” (well established) {6.3.1, 6.3.2, 6.4.2}. The economic consequences of land degradation are significant. For ... Read more
SEA in Southern Africa

Author: Audouin, Michelle A ; Lochner, Paul A ; Tarr, P Date: Jan 2011 On a continent where the livelihoods of the majority of Africans are closely linked to the health of the natural environment, and where poverty and land degradation has increased in recent decades, there is a critical need for sustainable ... Read more

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