Thesis (DPhil (Geography and Environmental Studies))—University of Stellenbosch, 2007. / The use of average energy aircraft noise contours as the sole means for guiding aircraft noise-based planning around airports is being questioned increasingly. A growing proportion of residents who live in neighbourhoods adjacent to airports are dissatisfied with the averaging procedure that is employed. In their experience of exposure to aircraft noise, particularly in the evening and at night when they are at home, the average energy aircraft noise descriptors are misleading. In order to effectively analyse the socio-spatial interaction of annoyance at and interference by aircraft noise, an alternative approach has been suggested – a supplemental noise perspective. Conventional approaches to aircraft noise land use planning based on average energy noise descriptors run the risk of being ineffectual, or even counterproductive, because they do not consider the central aspects of disturbance, namely the loudness of an event and the number of times events are heard. Consequently, an alternative measure to ameliorate the limitations of average energy noise contours is needed by which airport neighbours, the aviation industry and town planners can better understand the nature of the problem. Although supplemental noise analysis is not new, this study applies it to a South African international airport (OR Tambo) for the first time. The airport’s operations are typical of many busy airports close to large urban areas, serving domestic, regional and international routes. Reportedly, there have been few complaints about noise emanating from the airport, but when they are made they are usually about evening and night-time aircraft noise events. In the context of South Africa as a developing society in transition, where growth of urban settlements continues apace, average energy aircraft noise information must be enhanced by providing supplemental noise information. This study investigated the broad issue of land use planning around airports by employing two aircraft noise prediction models, namely the Integrated Noise Model and the Transparent Noise Information Package, to establish the various potential effects and consequences of night-time aircraft noise in noise zones demarcated according to supplemental aircraft noise information. The effects and consequences examined include annoyance, disturbance of sleep, telephone conversations, watching television and work or study, and the likelihood that people will move away to escape night-time aircraft noise. The perceptions of residents living in neighbourhoods around the airport were surveyed and the responses analysed according to noise zones classified as supplemental noise information. The results show that the airport’s neighbours are annoyed by aircraft noise and that aircraft noise interferes with normal household activities. This annoyance and interference decreases with increasing distance from the airport. Furthermore, reported annoyance and interference is greater in those areas where higher numbers of noise events are encountered, even at relatively low noise levels of 60 LAmax – something not evident from average energy noise contours. This finding strengthens the argument that it is insufficient to provide only average energy aircraft noise information when studying the impact of aircraft noise. To understand the situation more fully, supplemental noise information is essential. The study concludes with a framework constructed to apply supplemental aircraft noise information to the abatement and mitigation measures normally used to deal with aircraft noise.

Thesis (PhD)--Stellenbosch University, 2013. / ENGLISH ABSTRACT: Gated developments, also known as gated communities, have become a feature of urban living throughout the world and have been the subject of intensive research. Gated developments in South African cities are a ubiquitous feature of the post-apartheid urban landscape with many new housing developments in the form of secure estates or fortified townhouse complexes. Almost all the international literature on gated developments has focused on them as a metropolitan phenomenon. Very few international studies have investigated gated developments in non-metropolitan locales and this topic is unexplored in the South African context. This dissertation addresses this research gap. The study area is the entire non-metropolitan area of the Western Cape province. The politicoadministrative concept of non-metropolitan is used rather than the descriptor rural because the latter implies an area of primary production with no diversification of productive activities. The study area excludes the metropolitan area of Cape Town but includes the rest of the province within which there are settlements of varying sizes having a diverse range of economic activities. It is in these places that gated developments were investigated to cover and discover particular aspects of the hitherto unexplored non-metropolitan gated developments of South Africa. The specific objectives were to place the research in the theoretical and conceptual debates of gated developments; map the occurrence of the phenomenon; and spatially analyse the location and security aspects of the developments at a macro scale. Two towns, Swellendam and Ceres, were selected as case studies as their gated developments present a host of significant features warranting further micro-scale analysis. The spatial and locational analyses yielded other researchable themes specific to certain types of developments, namely retirement gated developments in Oudtshoorn and Swellendam and gated developments outside the urban edge. A comprehensive spatially-linked database of gated developments in the study area was compiled from numerous sources, culminating in a process of groundtruthing that resulted in the collection of data on the physical features of each development. Qualitative data was collected from respondents through interviews, electronic communications and a questionnaire survey. Distribution patterns of gated developments were determined from spatial data and data on physical features was used to calculate security level index values for the gated developments. These data sets enabled spatial and typological comparisons to be made. Qualitative data added a ‘voice’ to the quantitative data and provided insights into social, economic and planning aspects of gated developments. The location of gated developments in the province is largely determined by proximity to metropolitan Cape Town and areas with high occurrences of amenities. The spatio-temporal patterns and typological distinctions of gated developments are influenced by location-specific factors. In some towns the gated developments typify a living space and in others a living and lifestyle space. The security features of gated developments also vary typologically and spatially. Crime data was used to show that the distribution of non-metropolitan gated developments is not necessarily associated with towns with high levels of criminal activity. Security in these developments is not a response to rampant crime, rather a strategy brought into play in case something happens – preparedness in the unlikely event of a breach of security. The gated developments in the two case-study towns are strongly influenced by locationspecific needs, the purposes of residents and the processes of municipalities. Niche market gated developments, as represented in the thematic case studies of retirement gated developments and gated developments outside the urban edge are promoted by pull factors within towns and by the allure of an exclusive rural residential lifestyle of living in areas with high amenity offerings. The latter is linked to the transformation of agricultural land into gated developments, which signals a shift to postproductivist change in the study area. The results of this seminal investigation into non-metropolitan gated developments suggest avenues for further research endeavour. These include the need for greater understanding of the changing nature of social relations between gated and the non-gated inhabitants of non-metropolitan locales; investigation of the potential for increased topophobia within towns; and examinations of the functions of the various stakeholders and role players in establishing non-metropolitan gated developments. / AFRIKAANSE OPSOMMING: Geslote woonbuurte, ook bekend as geslote gemeenskappe, ’n kenmerk van baie stede regoor die wêreld, het die onderwerp van intensiewe navorsing geword. Geslote woonbuurte in Suid-Afrikaanse stede is ‘n alomteenwoordige kenmerk van die post-apartheid stedelike landskap met baie nuwe behuisingsontwikkelings wat as beveiligde landgoede en meenthuiskomplekse gebou word. Die meerderheid van die internasionale literatuur oor geslote woonbuurte beskou hulle as ’n metropolitaanse verskynsel. Baie min internasionale studies het geslote gemeenskappe in niemetropolitaanse lokaliteite ondersoek en dié onderwerp is onverken in die Suid-Afrikaanse konteks. Hierdie proefskrif vul dié navorsingsleemte. Die studiegebied is die hele nie-metropolitaanse gebied van die Wes-Kaap provinsie. Die politiesadministriewe konsep ‘nie-metropolitaans’ word gebruik in plaas van die benaming ‘landelik’ omdat laasgenoemde ’n gebied van primêre produksie met geen diversifisering van ekonomiese aktiwiteite impliseer. Dus, sluit die studiegebied die metropolitaanse gebied van Kaapstad uit, maar sluit die res van die provinsie in waar nedersettings van verskeie grootte en met ’n diverse reeks ekonomiese aktiwiteite voorkom. Dit is in hierdie gebiedens dat geslote woonbuurte ondersoek word met die doel om besondere aspekte van hierdie tot nou toe onverkende nie-metropolitaanse geslote woonbuurte in Suid-Afrika, na vore te bring. Die spesifieke doelwitte is om die navorsing binne die breër teorietiese en konseptuele debatte rondom geslote woonbuurte te plaas; die verspreiding van die verskynsel te karteer; die ligging en die sekuriteitsaspekte van die woonbuurte op makro skaal ruimtelik te ontleed. Ceres en Swellendam word as gevallestudies behandel. Die twee dorpe se geslote woonbuurte ’n menigte beduidende kenmerke van hul geslote woonbuurte vertoon, wat verdere mikro skaalanalise regverdig. Die ruimtelike en liggingsanalises het navorsingwaardige temas oor spesifieke tipes geslote woonbuurte onthul. Die temas sluit geslote aftreewoonbuurte in Oudtshoorn en Swellendam en geslote woonbuurte buitekant dorpsgrense in. ’n Omvattende ruimtelike databasis van geslote woonbuurte binne die studiegebeid is uit verskeie bronne saamgestel en ’n proses van terreinverifiëring het vir die inwin van data oor fisiese kenmerke van elke woonbuurt gesorg. Kwalitatiewe data is by respondente verkry deur middel van onderhoude, elektroniese kommunikasie en ’n vraelys opname. Verspreidingspatrone van die geslote woonbuurte is aan die hand van die ruimtelike data vasgestel en die data oor die fisiese verskynsels is gebruik om ’n sekuriteitsindekswaardes van die geslote woonbuurte te bereken. Die datastelle het ruimtelike en tipologiese vergelykings moontlik gemaak. Kwalitatiewe data het ’n ‘stem’ aan die kwantitiewe data verleen en insig in die sosiale, ekonomiese en beplanningsaspekte van geslote woonbuurte verskaf. Die ligging van geslote woonbuurte in die provinsie is grootliks deur nabyheid aan die Kaapse metropool en gebiede met ’n hoë voorkoms van geriewe beïnvloed. Die ruimtelike- en tydspatrone en tipologiese kenmerke van geslote woonbuurte is deur liggingspesifiekefaktore beïnvloed. In sommige dorpe is die geslote woonbuurte as ’n ‘leefruimte’ gekenmerk, terwyl ander geslote woonbuurte as ‘leefruimte en leefstylruimte’ getipeer word. Die sekuriteitsverskynsels van geslote woonbuurte het ook tipologiese en ruimtelike verskeidenheid getoon. Misdaaddata is gebruik om te toon dat die verspreiding van nie-metropolitaanse geslote woonbuurte nie noodwendig ooreenstem met dorpe met hoë misdaadsyfers nie. Sekuriteit is nie ’n reaksie op buitensporige misdaadsyfers nie, eerder ’n strategie wat in werking tree in geval iets gebeur – paraatheid vir die onwaarskynlike gebeurtenis van ’n sekuriteitskending. Die ontwikkeling van geslote woonbuurte in die gevallestudiedorpe is sterk deur liggingspesifieke behoeftes, die doelstellings van inwoners en prosesse van munisipaliteite beïnvloed. Geslote woonbuurte wat nismarkte bedien, soos dié wat deur die tematiese gevallestudies verteenwoordig is, word bevorder deur sekere aantrekkingsfaktore wat dorpe bied en die bekoring van ’n eksklusiewe landelike residensiële lewensstyl in gebiede met ’n hoë voorkoms van geriewe vir lewensgenieting. Laasgenoemde is gekoppel aan die omskepping van landbougrond vir die bou van geslote woonbuurte wat ’n aanduiding van post-produktivistiese verandering in die studiegebeid is. Dié eerste en gedagteprikkelende ondersoek oor nie-metropoolitaanse geslote woonbuurte opper temas vir verdere navorsing. Dit sluit in ’n verstaan van die moontlike veranderings in sosiale verhoudings tussen die inwoners van geslote en ongeslote nie-metropolitaanse lokaliteite, die moontlikheid van verhoogde topofobie in dorpe; en ondersoeke oor die rol van verskillende insethouers en rolspelers in die ontwikkeling van nie-metropoolitaanse geslote woonbuurte.

Thesis (PhD)--Stellenbosch University, 2013. / ENGLISH ABSTRACT: The Mount Rungwe ecosystem (MRE) has unique mountain resources. Its biological, hydrological, economic and cultural endowments offer many development opportunities for Tanzania. Since the 1970s, the MRE has experienced change in land use and means of acquiring livelihoods, calling for scientific investigation into the extent, nature, and magnitude of land use changes and their implications for communities’ livelihoods. The aim of the study was to investigate the major changes in land use, to identify the drivers responsible for these changes and to establish the interrelationship between land use change and communities’ livelihoods in order to suggest desirable management options towards improving rural livelihoods and the ecological integrity of MRE. A research design that integrates both qualitative and quantitative approaches was adopted. The fieldwork involved six villages representative of three ecological zones and 384 respondents were interviewed. Information on the past and present land uses, policies, institutions and processes that have influenced and are influencing land use change in the area was obtained through questionnaires, interviews, field observation, and analysis of documents. Satellite imagery of 1973, 1986, 1991 and 2010 were analysed for spatial and temporal statistics on land use and change. The findings indicate that MRE is experiencing land conversions from one land use category to the other especially in villages of the highland zone. Government policies on the use of and access to forests, agricultural land and energy have contributed to the past and current land use changes. Demographic, cultural, economic and natural factors singly or cumulatively have also induced changes in land use in MRE. Most of the changes in land use were noted between 1991 and 2010. At the district level there was a significant decrease in natural vegetation, particularly bushland and woodland, and an increase in cultivated land. Intensification of agricultural land use was more in the villages of the highland zone than in the middleland and lowland zones. Villages of the lowland zone showed a decline of cultivated land area, particularly in the tree crops category, and a constant or declining trend of the natural vegetation coverage – especially grasslands and woodlands. To reduce unplanned farm expansions into areas of natural vegetation, it is recommended that the Ministry of Agriculture should re-emphasise intercropping practices and provide extension services targeting crops such as potatoes and bananas which are now commercialised. This would be a step towards improving agricultural land productivity and addressing local food security. The ministry of Energy and Minerals could finance the ongoing tree planting efforts by local communities and enhance the use of more efficient charcoal stoves so as not only to protect the remaining forests but also as a way of diversifying the communities’ livelihoods. / AFRIKAANSE OPSOMMING: Die Mount Rungwe ekosisteem (MRE) het 'n unieke berggebaseerde hulpbronbasis. Sy biologiese, hidrologiese, ekonomiese en kulturele erfenis bied vele ontwikkelingsgeleenthede vir Tanzanië. Sedert die 1970s het die MRE verandering in grondgebruik ervaar wat implikasies inhou vir bestaanswyses van sy bewoners. Daarom vereis die veranderingsverskynsel wetenskaplike ondersoek na die omvang en aard van grondgebruikveranderinge en die implikasies daarvan vir gemeenskappe se lewensbestaan. Die doel van die studie was om ondersoek in te stel na die belangrikste veranderinge in grondgebruik en om die drywers verantwoordelik vir hierdie veranderinge te identifiseer en die onderlinge verband tussen die verandering in grondgebruik en gemeenskappe se lewensbestaan te identifiseer. Daaruit word wenslike bestuursopsies duidelik vir die verbetering van landelike bestaansmoontlikhede en die handhawing van ekologiese integriteit van die MRE. 'n Navorsingsontwerp wat beide kwalitatiewe en kwantitatiewe benaderings integreer is gekies. Vir veldwerk is ses dorpe in drie ekologiese sones ondersoek en 384 respondente is ondervra. Inligting oor die grondgebruike, -veranderings, beleide, instellings en prosesse wat die gebied beïnvloed het, is verkry deur middel van vraelyste, onderhoude, veldwaarneming, en dokumentontleding. Satellietbeelde van 1973, 1986, 1991 en 2010 is ontleed vir ruimtelike en temporale patrone van grondgebruik en verandering. Die bevindinge dui daarop dat die MRE grondgebruik-omskakeling van verskillende kategorieë na ander in veral die hooglandsone ervaar. Regeringsbeleid oor die gebruik en toegang tot natuurlike woude, landbougrond en energiebronne het bygedra tot hierdie grondgebruike en hul veranderinge. Demografiese, kulturele, ekonomiese en omgewingsfaktore, enkel of kumulatief, het ook tot die veranderinge bygedra. Die meeste van die veranderinge in grondgebruik is tussen 1991 en 2010 aangeteken. Op distriksvlak het byvoorbeeld natuurlike plantegroei, veral bosveld en woud, beduidend oor die studietydperk afgeneem, terwyl die bewerkte grondoppervlak sterk toegeneem het. Intensivering van landbougrondgebruik was meer intens in die dorpe van die hooglandsone in vergelyking met die middelland en laer sones. Dorpe van die laer sone het weer 'n afname van bewerkte grond, veral boomagtige gewasse, en 'n konstante of dalende tendens van die natuurlike plantegroei ervaar – veral gras- en bosveld. Om ongewenste plaasuitbreidings na gebiede van natuurlike plantegroei te voorkom, beveel die studie aan dat die landbouministerie weer klem plaas op praktyk vir tussenverbouing van gewasse en voorligtingsdienste voorsien vir die verbouing van gekommersialiseerde gewasse soos aartappels en piesangs. Dit sou die verbetering van die landbou-produktiwiteit en die verhoging van plaaslike voedselsekuriteit in die hand werk. Die energieministerie behoort origens deurlopende boomplant-aksies deur plaaslike gemeenskappe te stimuleer deur verskaffing van finansies en moet die gebruik van meer doeltreffende houtskool stowe aanmoedig. Dit sal die oorblywende woude help beskerm en is ook 'n manier om die gemeenskappe se lewensonderhoudstelsels te diversifiseer en te verbeter.

Thesis (PhD)--Stellenbosch University, 2013. / ENGLISH ABSTRACT: It is estimated that 70% of sub-Saharan Africa’s urban population resides in informal settlements. Cape Town (South Africa), in particular, has a projected 223 informal settlements within its boundaries (which house almost 136 000 households). The national government has attempted to meet housing needs through the upgrading of informal settlements. In situ upgrading has been seen as a particularly popular route to follow. This study aimed to investigate the City of Cape Town’s governmentality in the in situ upgrading of Makhaza and New Rest in Cape Town and explore the implications of this governmentality for women’s social networks in these two settlements. The study focused on the governmentality elements of rationalities, practices and techniques and counter-conduct. A review of the literature shows little attention has been paid to the various governmentalities (practice, techniques and rationalities) that exist within informal settlement upgrading. The literature has also not paid much attention to how the governmentality of those undertaking informal settlement upgrading, relates to women’s social networks (and their governmentality) within upgraded sites. The research made use of qualitatively-driven methodologies and approaches, employing the techniques of Neighbourhood Social Mapping, Social Network Assessment (SNA), semi-structured interviews, questionnaires, transect walks, observational studies and secondary data gathering. The study found, amongst other things, that the governmentality (rationalities, techniques and practices) used by the City to plan and implement the upgrading of informal settlements differs from that of the women’s social networks. The profound differences in governmentalities have meant that the settlements do not meet the needs of the women and their social networks. In response the women have redesigned their new settlement to meet the needs of their social networks. Integral Theory is used in this thesis to map and better understand the differing governmentalities and their relationship and was used to propose an Integral approach in managing differing governmentalities. The thesis suggests that, in order to understand fully and respond appropriately to the challenges faced in upgrading, those in power need to be aware of and include all perspectives and actors within their upgrading process and practice. / AFRIKAANSE OPSOMMING: Daar word beraam dat 70% van sub-Sahara Afrika se stedelike populasie in informele nedersettings woon. Kaapstad (Suid-Afrika), spesifiek, het ‘n beraamde 223 informele nedersettings binne die grense (wat omtrent 136 000 huishoudings huisves). Die nasionale regering het onderneem om behuisings behoefte te voorsien deur die opgradering van informele nedersettings. In situ opgradering is gesien as ‘n besonder gewilde roete om te volg. Hierdie studie het gepoog om die City of Cape Town (die Stad) se governmentality te ondersoek in die opgradering van Makhaza en New Rest in Kaapstad. So ook om die implikasies van hierdie governmentality vir vroue se sosiale netwerke in hierdie nedersettings te verken. Die studie het gefokus op die governmentality (regeringsmentaliteit) beginsels van rationaliteite, praktyke en tegnieke en teen-optrede. ‘n Oorsig van die literatuur toon min aandag is geskenk aan die verskillende governmentalities wat binne opgraderingsprojekte vir informele nedersettings bestaan. Die literatuur het ook nie veel aandag gegee aan hoe die governmentality van die onderneming van die informele nedersettings met betrekking tot vroue se sosiale netwerke (en hul governmentality) binne opgradeerde terreine. Die navorsing het gebruik gemaak van kwaliteits gedrewe metodologie en benaderings, die gebruik van tegnieke van omgewing sosiale kartering, sosiale netwerk beraming, semi-gestruktureerde onderhoude, vraelyste, deursnee wandeling, waarnemings studies en sekondêre data insameling. Die studie het onder andere bevind dat die governmentality (rationaliteite, tegnieke en praktyke), soos gebruik deur die Stad om opgradering van informele nedersettings te beplan en implimenteer, verskil van die van die vroue se sosiale netwerke. Die diepgaande verskille in governmentalities het gelei daartoe dat die nedersettings nie voldoen aan die behoeftes van die vroue en hul sosiale netwerke nie. In reaksie daarop het die vroue die nuwe nedersetting herontwerp om in hul sosiale netwerk behoeftes te voorsien. Integrale Teorie is in hierdie tesis gebruik om die verskille in governmentalities en hul verwantskappe uiteen te sit en beter te kan verstaan en ook om die Integrale benadering in die hantering van verskillende governmetnalities voor te stel. Die tesis dui daarop dat in orde om ten volle te verstaan en toepaslik te reageer op die uitdagings wat gepaard gaan met opgradering moet die wat in beheer is van alle perspektiewe en akteurs binne die opgraderings proses bewus wees en dit in ag neem.

Thesis (MSc)--University of Stellenbosch, 2004 / ENGLISH ABSTRACT: The Sandveld, a potato growing area of the Western Cape is subject to significant groundwater abstraction for both municipal and agriculture purposes. The climate is arid and sensitive and important ecosystems in the area are showing varying degrees of impact. Management measures are needed to ensure ongoing sustainable development of the area. In this study, different interpolation techniques were evaluated to calculate values for unsampled variables rainfall and groundwater elevation. Local deterministic techniques as well as geostatistical techniques were used. It was found that geostatistical techniques, especially with collateral information, such as topography, provided a more accurate result. For environmental studies of this nature, Kriging is recommended as interpolation technique. The underlying data will determine the selection of the particular type of Kriging. Data was extracted from a customized relational database, geoMon, used for data capture, retrieval, processing and reporting. Ease of data extraction facilitated analysis. The interpolated grids were applied in two scenarios: Recharge calculations and quantification as well as a new classification approach according to Resource Directed Measures (RDM). Management classes were defined based on GIS-derived data. / AFRIKAANSE OPSOMMING: Die Sandveld, ‘n aartappelverbouingsgebied in die Wes-Kaap, ondergaan aansienlike grondwateronttrekking vir beide munisipale sowel as landbou doeleindes. Die klimaat is dor en droog en sensitiewe en belangrike ekosisteme in die area ondervind wisselende impakvlakke. Bestuursmaatreëls word benodig om volhoubare ontwikkeling van die area te verseker. In hierdie studie is verskillende interpolasie tegnieke om onbekende waardes vir veranderlikes gebruik in grondwater evaluasie te bereken, evalueer. Lokale deterministiese tegnieke sowel as geostatistiese tegnieke is gebruik. Geostatistiese tegnieke, veral gebruik saam met addisionele inligting soos topografie, bereken meer akkurate resultate. Vir omgewingsstudies van hierdie aard, word Kriging aanbeveel as interpolasie tegniek. Eienskappe van die onderliggende data word gebruik om die tipe Kriging aan te dui. Data is onttrek uit ‘n gebruikersaangepaste databasis, geoMon, wat gebruik is vir datavaslegging, onttrekking, prosessering en verslaggewing. Die gemak waarmee data onttrek kon word het analise vergemaklik. Geïnterpoleerde data is gebruik vir grondwateraanvullingsberekeninge en -kwantifisering sowel as ‘n nuwe benadering tot klassifikasie volgens hulpbron gerigte maatreëls. Bestuursklasse gebaseer op GIS-afgeleide data, is gedefinieer.

Thesis (MA)--University of Stellenbosch, 2004. / ENGLISH ABSTRACT: Recently there has been growing interest in evaluating the performance and outcomes of spatial planning policies worldwide. In response to this a research was carried out to evaluate and monitor the effectiveness of spatial planning policies in the Cape Metropolitan Area (CMA). The Planning Indicators Model (PIM), which consists of a set of twenty-six indicators, was applied to monitor and measure the extent to which the Metropolitan Spatial Development Framework (MSDF) has affected land use and physical development in the CMA. To achieve the aim of the study, the research was divided into three phases. The first phase involved a literature review, the second phase involved interviews with planning officials and lastly, the collection of different thematic datasets required to run the Planning Indicators Model. The data sets were used to monitor and display spatiotemporal variations in conformance and performance indices in the form of maps. These maps were used to identify areas where strengths can be protected and where weaknesses need to be corrected. From a set of 26 indicators used for this study only two indicators monitored conformances (Growth of informal housing townships) over the period 1993 – 1998; the others simply indicated the present conditions. This means that the rest of the indicators did not show trends. However, the data are presented in this report as a useful baseline for future conformance and performance monitoring exercises. The study also revealed that for the past twelve years the MSDF has been the subject of extensive debate within the local authorities. Also several indicators seem to overlap and need to be clearly defined, thus it is recommended that some of these indicators should be combined to avoid duplication and confusion. Generally, the PIM can assist in making the impact of spatial planning greater in the CMA. / AFRIKAANSE OPSOMMING: Onlangs is daar wêreldwyd groeiende belangstelling in die prestasies en uitkomstes van ruimtelike beplannings- beleide. In reaksie daarop is hierdie navorsing gedoen om die doeltreffendheid van die ruimtelike beplannings- beleide van die Kaapse Metropolitaanse Gebied (KMG) te evalueer en te monitor. Die Beplannings Aanwysers Model (BAM) wat bestaan uit ‘n stel van ses-en- twintig aanwysers, is aangewend om te meet tot hoeverre die Metropolitaanse Ruimtelike Ontwikkelings Raamwerk grondgebruik en fisiese ontwikkeling in die Kaapse Metropolitaanse Gebied beïnvloed het. Om die doelwit van hierdie studie te verwesenlik, is die navorsing gedoen in drie fases. Die eerste fase bestaan uit ‘n oorsig van die literatuur en die tweede fase uit onderhoude met amptenare verantwoordelik vir beplanning. Die laaste fase beslaan die versameling van die verskillende tematiese stelle data wat benodig word vir die Beplannings Aanwysers Model. Die stelle data is gebruik om die ruimtelike- en tydsvariasies in die konformering- en prestasie indekse te monitor en ten toon te stel in die vorm van kaarte. Hierdie kaarte is gebruik om die gebiede te identifiseer waar sterkpunte behoue moet bly en waar swakpunte reggestel moet word. Uit die stel van 26 aanwysers wat gebruik is vir hierdie studie, het net twee aanwysers konformering (Die groei van dorpsgebiede met informele behuising) gedurende die periode 1993 – 1998 gemonitor; die ander het eenvoudig die huidige toestand aangetoon. Dit beteken dat die ander aanwysers nie tendense aangetoon het nie. Die data word egter in hierdie verslag weergee as ‘n nuttige basis vir die toekomstige monitor van konformering en prestasie. Die studie toon ook aan dat daar gedurende die afgelope twaalf jaar baie deur plaaslike owerhede gedebatteer is oor die Metropolitaanse Ruimtelike Ontwikkelings Raamwerk. Ook oorvleuel sommige van die aanwysers en moet hulle meer duidelik omskryf word. Dus word daar aanbeveel dat sommige van die aanwysers gekombineer moet word om duplikasie en verwarring te voorkom. Oor die algemeen kan die Beplanning Aanwysers Model help om die impak van ruimtelike beplanning op die Kaapse Metropolitaanse Gebied te bevorder.

Thesis (MSc (Geography and Environmental Studies))--Stellenbosch University, 2008. / Accelerating urban growth places increasing pressure not only on the efficiency of infrastructure and service provision, but also on the natural environment. City managers are delegated the task of identifying problem areas that arise from this phenomenon and planning the strategies with which to alleviate them. It is with this in mind that the research investigates the implementation of an urban growth model, SLEUTH, as a support tool in the planning and decision making process. These investigations are carried out on historical urban data for the region falling under the control of the Cape Metropolitan Authority. The primary aim of the research was to simulate future urban expansion of Cape Town based on past growth patterns by making use of cellular automata methodology in the SLEUTH modeling platform. The following objectives were explored, namely to: a) determine the impact of urbanization on the study area, b) identify strategies for managing urban growth from literature, c) apply cellular automata as a modeling tool and decision-making aid, d) formulate an urban growth policy based on strategies from literature, and e) justify SLEUTH as the desired modeling framework from literature. An extensive data base for the study area was acquired from the product of a joint initiative between the private and public sector, called “Urban Monitoring”. The data base included: a) five historical urban extent images (1977, 1988, 1993, 1996 and 1998); b) an official urban buffer zone or ‘urban edge’, c) a Metropolitan Open Space System (MOSS) database, d) two road networks, and d) a Digital Elevation Model (DEM). Each dataset was converted to raster format in ArcEdit and finally .gif images were created of each data layer for compliance with SLEUTH requirements. SLEUTH processed this historic data to calibrate the growth variables for best fit of observed historic growth. An urban growth forecast was run based on the calibration parameters. Findings suggest SLEUTH can be applied successfully and produce realistic projection of urban expansion. A comparison between modelled and real urban area revealed 76% model accuracy. The research then attempts to mimic urban growth policy in the modeling environment, with mixed results.

Thesis (MA)--Stellenbosch University, 2011. / ENGLISH ABSTRACT: The constitution of the Republic of South Africa (1996) states that local governments are responsible for the creation of a socioeconomic environment that enables citizens to make a living for themselves. It is on the grounds of this responsibility that the study is based on the relationship between street traders and the City of Cape Town within the Cape Town CBD. This relationship is investigated with the aim of assessing what the nature of the relationship is between street traders and the City of Cape Town. A survey was conducted wherein 71 street traders were interviewed and to complement the survey interviews were conducted with individuals from local government and the private sector who deal with street traders on a daily basis. The survey results indicated that there is a positive relationship between traders and the City of Cape Town, but that local government does not live up to expectation when it comes to the facilitation of informal business development. At the hand off these findings; policy interventions are put forth that would lead to the creation of a facilitative relationship between the City of Cape Town and street traders. Proposed policy interventions are focussed on the improvement of channels of communication between street traders and local government. The proposed policy framework places emphasis on the active participation of local government in the formalisation process of informal traders. The study concludes by proposing policy intervention that would promote a facilitative relationship between street traders and local government and contribute to a sustainable street trading economy in Cape Town. / AFRIKAANSE OPSOMMING: Die grondwet van die Republiek van Suid Afrika (1996) daag elke plaaslike owerheid uit met die taak om ’n sosio-ekonomiese omgewing te skep wat dit vir landsburgers moontlik maak om ’n bestaan te kan maak. Dit is op grond van hierdie verantwoordelikheid dat die studie gebaseer is op die verhouding tussen straathandelaars, binne die sentrale sake kern, en Kaapstad se plaaslike owerheid. Die verhouding tussen straathandelaars en die Stad Kaapstad is ondersoek met die doel om die aard van die verhouding te omskryf. ’n Vraelys is uitgedeel aan 71 straathandelaars en om die opname te komplementeer is onderhoude gevoer met individue van beide die openbare en privaat sektor wat saam met straathandelaars werk op ’n daaglikse basis. Die resultate van die vraelys het gewys op die positiewe verhouding tussen handelaars en die Stad Kaapstad, alhoewel dit aan die lig gekom het dat plaaslike owerhede nie voldoen aan verwagtinge ten opsigte van die fasilitering van informele besigheidsontwikkeling nie. Beleidsmaatreëls wat ’n fasiliterende verhouding sou bewerkstellig; sowel as ’n beleidsraamwerk word voorgestel aan die hand van die bevindinge van die opname. Die voorstelle is grootliks gegrond op die verbetering van kommunikasie tussen die plaaslike owerhede en straathandelaars sowel as die aktiewe deelname van die plaaslike owerheid in die formaliseringsproses van informele handelaars. Deur die implementering van die voorgestelde beleidsmaatreëls is die studie van mening dat ’n fasiliterende verhouding tussen straathandelaars en plaaslike owerhede gevestig kan word met die doel om ’n bydra te maak tot ’n volhoubare straathandel-ekonomie in Kaapstad.

Thesis (MSc (Geography and Environmental Studies))--University of Stellenbosch, 2006. / Sustainable use of the earth’s resources is seen by many authorities as critical to ensure the planet’s survival. In this regard agriculture is seen as a major role player and fundamental link in the chain of sustainability. South Africa, a country with relatively little favourable agricultural land, should therefore preserve high potential areas for agricultural purposes. The Western Cape, with 75% of all medium-potential arable land in South Africa, is a valuable asset. One region targeted for development and where uncertainty prevails regarding its agricultural potential, is the G21B catchment in the Atlantis Growth Corridor (AGC). The AGC is envisaged as long-term growth axis for the Cape Metropole, but conflicting opinions exist on its agricultural possibilities and suitability to absorb urban growth. Consequently, the aim of this project was to evaluate the suitability of this catchment for a number of agricultural landuses. Fuzzy logic, a modification of the land evaluation approach originally developed by the Food and Agricultural Organization of the United Nations (FAO), was used to address this problem. Input data consisted of a soil map and digital elevation model (DEM) of the area. Parameters identified from these sources and applicable to the study were soil texture of the first, second and third horizons, as well as coarse fragments in the top soil, wetness, weathered rock, average pH, effective root depth, and slope. These parameters were compared to the requirements of six landuses, i.e. wheat, wine grapes, potatoes, tomatoes, onions, and citrus, and a fuzzy representation for every landuse was constructed. Expert opinion aided in a weighting process whereby the relative weights of parameters were computed and incorporated into the evaluation. Results showed extensive areas with a relatively high agricultural potential for potatoes and wine grapes. In addition, areas with potential were also identified for wheat, citrus, and tomatoes, albeit on more limited scale. Large areas, however, were deemed unsuitable for the aforementioned agricultural crops and would therefore be suitable to absorb metropolitan growth or to be maintained as conservation areas. The fuzzy logic approach provided insightful results. Problematic parameters were easily identified and no information was lost in the evaluation process. It also allowed for an objective quantitative comparison between crops. This provided freedom in deciding which landuse should be practiced, especially if the focus is on a sustainable rather than the most productive crop.

Thesis (MSc) -- Stellenbosch University, 2012. / ENGLISH ABSTRACT: One of the main objectives of the South African Wine of Origin Scheme (SAWOS) is to guarantee the quality of wine products emerging from South Africa’s viticultural production areas by preventing the abuse of names of products originating from outstanding viticultural areas. The study of terroirs contributes to knowledge that assists in delimiting potential viticultural areas in South Africa. Terroirs are areas with homogeneous groups of natural factors that, with the aid of effective management, have the potential to produce a unique product over a recognizable period. Natural terroir units (NTU) reflect the integration of relatively homogenous environmental factors, which include topography, climate, soil and geology. This study investigates the use of geographic information systems (GIS) and remote sensing methods in the identification of NTU in the Robertson wine district. Existing topographical, soil, geological and climatic GIS data layers were collected at various scales. In addition to this spatial data, orthorectified and radiometrically corrected SPOT 5 and ASTER satellite imagery were used to classify the land use/cover using an object-based image analysis (OBIA) approach. Eight land use/cover classes were distinguished by a sequential ruleset and an overall accuracy of 81.2% was achieved. The land use/cover layer was combined with the slope aspect and soil landscape to provide a three-component NTU description. One hundred and seventy NTU were identified, of which fifty five units exist for agriculture. These NTU can be used for site selection of agricultural produce and effective planning and management of land use. Climate was not included in the delimitation of NTU because the coarse resolution of climatic data could not be used to distinguish between different NTU. Therefore, all NTU identified in this research has similar climatic conditions. The major drawback of GIS-assisted terroir studies is the difficulty of representing a number of NTU on one GIS map. Therefore, it is recommended to associate the NTU map with a table of the classes instead. Furthermore, the accuracy, scale and resolution of available GIS data in South Africa influence the delimitation of NTU. Although remote sensing was found to provide efficient methods for land cover mapping, the use of multiseasonal satellite images would classify vineyards more efficiently because such an approach accounts for the different growth cycles of grapevines. / AFRIKAANSE OPSOMMING: Een van die hoof doelwitte van die Suid-Afrikaanse Wyn van Oorsprongskema (SAWOS) is om die kwaliteit van wynbouprodukte afkomstig van Suid-Afrikaanse wingerdbougebiede te verseker. Die studie van terroirs is geïdentifiseer as ‘n metode om moontlike wingerdbougebiede in Suid-Afrika af te baken. Terroirs is gebiede met relatief homogene natuurlike faktore wat oor ‘n erkenbare tydperk en met behulp van effektiewe bestuur die vermoë het om ‘n unieke produk te lewer. Dié natuurlike faktore word, “natuurlike terroir eenhede” (NTE) genoem en sluit topografie, klimaat, grond en geologie in. Hierdie navorsing ondersoek die gebruik van geografiese inligtingstelsels (GIS) en afstandswaarnemingstegnieke om NTE in die Robertson-wyndistrik te identifiseer. Bestaande ruimtelike topografiese-, grond-, geologiese- en klimaatdata is op ‘n verskeidenheid skale versamel. Bykomend tot hierdie ruimtelike data, is ortogekorrigeerde en radiometries-gekalibreerde SPOT 5 en ASTER satellietbeelde gebruik om landgebruik/ -bedekking te klassifiseer. Objekgerigte beeldanalise (OGBA) is toegepas tydens hierdie klassifikasie en agt landgebruik/ -bedekkingsklasse is onderskei deur gebruik te maak van ‘n stapsgewyse reëlstel. OGBA het ‘n algehele akkuraatheid van 81.2% gelewer. Die landgebruik/ -bedekkingsdata is gekombineer met hellingaspek en die grondlandskap om ‘n drieledige NTE-beskrywing te lewer. Een honderd en sewentig NTE is geïdentifiseer waarvan daar vyf-en-vyftig eenhede vir landbou bestaan. Hierdie NTE kan aangewend word vir die selektering van geskikte terreine vir landbou-gewasse en effektiewe grondgebruikbeplanning en -bestuur. As gevolg van die bestaande klimaatdata se growwe resolusie, was dit ongeskik om te onderskei tussen verskillende NTE. Dus heers daar soortgelyke klimaatstoestande vir elke NTE wat in hierdie navorsing geïdentifiseer is. Die grootste stremmende faktor wat GIS-verwante terroir navorsing beïnvloed, is die uitdaging om ‘n groot getal NTE op een kaart voor te stel. Daarom is dit beter om die NTE kaart met ‘n tabel te assosieer. Verder beïnvloed die akkuraatheid, skaal en resolusie van beskikbare digitale geografiese data in Suid-Afrika die afbakening van NTE. Alhoewel bevind is dat afstandwaarneming ‘n effektiewe metode is om landbedekking te karteer, sal die gebruik van meerseisoenale satellietbeelde wingerde meer doelmatig karteer omdat dit verskeie siklusse in die groei van wingerde in ag neem. SLEUTELWOORDE EN FRASES terroir, natuurlike terroir eenhede (NTE), geografiese inligtingstelsels, afstandwaarneming, wingerdkunde