Pub Date : 2022-06-01DOI: 10.1080/03736245.2022.2081594
Michael Hathorn
ABSTRACT The COVID-19 pandemic presents a major disruption to urban systems in cities all around the world. As such, it is vital to use this moment as an opportunity to re-evaluate contemporary planning directions in the government structures of the City of Cape Town and the Western Cape Province. This article aims to do this by understanding the lessons that state-led COVID-19 responses hold for urban policy and practice in the City and Province in the future. It finds that, while it is too early to draw definitive conclusions about future planning directions, it is possible to reflect on early learnings from the events of the pandemic’s initial surge, particularly in the context of historical urban responses to public health crises.
{"title":"Planning for health and wellbeing? Reflections on urban policy and practice in the City of Cape Town and Western Cape Province during the COVID-19 pandemic","authors":"Michael Hathorn","doi":"10.1080/03736245.2022.2081594","DOIUrl":"https://doi.org/10.1080/03736245.2022.2081594","url":null,"abstract":"ABSTRACT The COVID-19 pandemic presents a major disruption to urban systems in cities all around the world. As such, it is vital to use this moment as an opportunity to re-evaluate contemporary planning directions in the government structures of the City of Cape Town and the Western Cape Province. This article aims to do this by understanding the lessons that state-led COVID-19 responses hold for urban policy and practice in the City and Province in the future. It finds that, while it is too early to draw definitive conclusions about future planning directions, it is possible to reflect on early learnings from the events of the pandemic’s initial surge, particularly in the context of historical urban responses to public health crises.","PeriodicalId":46279,"journal":{"name":"South African Geographical Journal","volume":"18 1","pages":"348 - 365"},"PeriodicalIF":1.4,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78942084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-01DOI: 10.1080/03736245.2022.2066163
Y. C. Akinyemi
ABSTRACT This study aims to analyse the spatiotemporal trends and effect of economic development on road traffic fatalities (RTF) across 48 countries in Africa using annual data between 2007 and 2016. Data on Gross Domestic Product (GDP) per capita, population density, road fatalities and registered vehicles were obtained from WHO and World Development Indicators. Spatial autocorrelation and clustering of mortality rates were analysed using spatial statistical techniques. Average mortality rate declined from 32.2 per 100,000 population in 2007 to 26.6 in 2016. There was wide spatial variation in mortality rates across countries. The year 2010 exhibited a statistically significant spatial dependence on mortality rates. Locally, hotspots of mortality rates were located in 10 countries in 2010 and in 2 countries in 2016. Significant ‘coldspots’ were exhibited in four countries during the study period. Mixed-effect negative binomial regression analysis results reveal significant negative relationship between GDP per capita and road fatalities for both highly developed and less developed countries. Furthermore, 1% increase in registered vehicles leads to a rise in RTF. The government needs to invest more funds in road infrastructure, safe public transport, enforcement of regulations and post-crash emergency care.
{"title":"Spatiotemporal pattern of road traffic fatalities in Africa: the effect of economic development","authors":"Y. C. Akinyemi","doi":"10.1080/03736245.2022.2066163","DOIUrl":"https://doi.org/10.1080/03736245.2022.2066163","url":null,"abstract":"ABSTRACT This study aims to analyse the spatiotemporal trends and effect of economic development on road traffic fatalities (RTF) across 48 countries in Africa using annual data between 2007 and 2016. Data on Gross Domestic Product (GDP) per capita, population density, road fatalities and registered vehicles were obtained from WHO and World Development Indicators. Spatial autocorrelation and clustering of mortality rates were analysed using spatial statistical techniques. Average mortality rate declined from 32.2 per 100,000 population in 2007 to 26.6 in 2016. There was wide spatial variation in mortality rates across countries. The year 2010 exhibited a statistically significant spatial dependence on mortality rates. Locally, hotspots of mortality rates were located in 10 countries in 2010 and in 2 countries in 2016. Significant ‘coldspots’ were exhibited in four countries during the study period. Mixed-effect negative binomial regression analysis results reveal significant negative relationship between GDP per capita and road fatalities for both highly developed and less developed countries. Furthermore, 1% increase in registered vehicles leads to a rise in RTF. The government needs to invest more funds in road infrastructure, safe public transport, enforcement of regulations and post-crash emergency care.","PeriodicalId":46279,"journal":{"name":"South African Geographical Journal","volume":"36 1","pages":"484 - 513"},"PeriodicalIF":1.4,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79508828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-04-27DOI: 10.1080/03736245.2022.2066165
A. W. Marden, T. Meyer, Kelley A. Crews Meyer
ABSTRACT Fire is an integral part of southern African savannas, but despite being well-studied, complex relationships among fire, humans, climate and ecological systems remain poorly understood across much of the region. Analyses that provide information on fire trends in diverse regional contexts are essential for informing fire management and monitoring change. Harmonic seasonal patterns, linear time-series trends and breakpoints in fire occurrence (BFAST) were analysed for 2001–2018 in Botswana using remotely sensed fire occurrence measurements. Regional classification schemes were organized by human land-use, annual precipitation zones and vegetation communities. At the regional scale, mean annual precipitation, land-use and vegetation type influenced fire occurrence magnitude. Seasonality and variability were most clearly organized according to mean annual precipitation. Variability in seasonal and long-term fire trends were observed across the different classification schemes apart from mean annual precipitation zones above 600 mm. The methodology used effectively identified key differences in fire variability across regional classification schemes. However, the spatial resolution and classification scheme may be less effective for human land use and small fires. Overall, MODIS fire data analysed with BFAST is a promising and accessible method for analysing regional savanna fire regimes.
{"title":"Regional fire occurrence in Southern Africa using BFAST iterative break detection in seasonal and trend components of a MODIS time series","authors":"A. W. Marden, T. Meyer, Kelley A. Crews Meyer","doi":"10.1080/03736245.2022.2066165","DOIUrl":"https://doi.org/10.1080/03736245.2022.2066165","url":null,"abstract":"ABSTRACT Fire is an integral part of southern African savannas, but despite being well-studied, complex relationships among fire, humans, climate and ecological systems remain poorly understood across much of the region. Analyses that provide information on fire trends in diverse regional contexts are essential for informing fire management and monitoring change. Harmonic seasonal patterns, linear time-series trends and breakpoints in fire occurrence (BFAST) were analysed for 2001–2018 in Botswana using remotely sensed fire occurrence measurements. Regional classification schemes were organized by human land-use, annual precipitation zones and vegetation communities. At the regional scale, mean annual precipitation, land-use and vegetation type influenced fire occurrence magnitude. Seasonality and variability were most clearly organized according to mean annual precipitation. Variability in seasonal and long-term fire trends were observed across the different classification schemes apart from mean annual precipitation zones above 600 mm. The methodology used effectively identified key differences in fire variability across regional classification schemes. However, the spatial resolution and classification scheme may be less effective for human land use and small fires. Overall, MODIS fire data analysed with BFAST is a promising and accessible method for analysing regional savanna fire regimes.","PeriodicalId":46279,"journal":{"name":"South African Geographical Journal","volume":"42 1","pages":"200 - 221"},"PeriodicalIF":1.4,"publicationDate":"2022-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88711867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-15DOI: 10.1080/03736245.2022.2049633
Martin Magidi
ABSTRACT The paper deviates from the general trend to focus on big cities as research sites. It explores the impacts of deindustrialization on urban livelihoods in Norton – a small town west of Harare using the Sustainable Livelihoods Approach (SLA) to unpack how deindustrialization compromised livelihood assets and outcomes in Norton. Data were collected using triangulation of methods, which comprised interviews and field observations. Findings showed that key industries collapsed, leading to massive job losses, and job-related benefits. Findings further point to reduced service delivery capacity, resulting in poor sanitation, water, and electricity supply in the town, and how these relate to sustainable livelihoods. Deindustrialization also triggered a surge in urban poverty, food insecurity, poor housing, and the rise of the informal economy in Norton. The study concludes that despite its rural origins, the SLA is an effective tool to analyse urban livelihoods. It suggests that deindustrialization tends to be rampant in small towns vis-à-vis big cities. The study further highlights that financial assets tend to be more important in building urban livelihoods than the other forms of assets constitutive of the SLA. It concludes by reflecting on how human skills easily become redundant and stranded assets where industry is dysfunctional.
{"title":"Small towns as research sites: the impacts of deindustrialisation on urban livelihoods in Norton, Zimbabwe","authors":"Martin Magidi","doi":"10.1080/03736245.2022.2049633","DOIUrl":"https://doi.org/10.1080/03736245.2022.2049633","url":null,"abstract":"ABSTRACT The paper deviates from the general trend to focus on big cities as research sites. It explores the impacts of deindustrialization on urban livelihoods in Norton – a small town west of Harare using the Sustainable Livelihoods Approach (SLA) to unpack how deindustrialization compromised livelihood assets and outcomes in Norton. Data were collected using triangulation of methods, which comprised interviews and field observations. Findings showed that key industries collapsed, leading to massive job losses, and job-related benefits. Findings further point to reduced service delivery capacity, resulting in poor sanitation, water, and electricity supply in the town, and how these relate to sustainable livelihoods. Deindustrialization also triggered a surge in urban poverty, food insecurity, poor housing, and the rise of the informal economy in Norton. The study concludes that despite its rural origins, the SLA is an effective tool to analyse urban livelihoods. It suggests that deindustrialization tends to be rampant in small towns vis-à-vis big cities. The study further highlights that financial assets tend to be more important in building urban livelihoods than the other forms of assets constitutive of the SLA. It concludes by reflecting on how human skills easily become redundant and stranded assets where industry is dysfunctional.","PeriodicalId":46279,"journal":{"name":"South African Geographical Journal","volume":"33 1","pages":"179 - 199"},"PeriodicalIF":1.4,"publicationDate":"2022-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82446605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-14DOI: 10.1080/03736245.2021.2020585
G. Weir-Smith, T. Mokhele, S. Dlamini
ABSTRACT South Africa is set to implement a universal health care system, called National Health Insurance (NHI). The country is plagued by inequality at various levels, and the NHI will attempt to provide more equitable access to health. A national online COVID-19 survey in 2020, measured respondents’ favour or not of such a system. Multivariate logistic regression identified unique determinants of perception of NHI among urban residents (total respondents 12,682) in South Africa. Data were benchmarked using 2019 mid-year population estimates. Results showed that the majority (77.5%) of urban residents were in favour of NHI in South Africa. Furthermore, township (aOR = 1.36, 95% CI [1.10–1.69], p = 0.005) and informal settlement (aOR = 1.55, 95% CI [1.09–2.20], p = 0.016) residents were significantly more likely to be in favour of NHI than those residing in inner cities. This research sheds light on urban people’s perception of the NHI system for South Africa. The findings showed, respondents were mostly in favour of the NHI. It is recommended that the question of NHI be repeated in future research, during a time when knowledge of the COVID-19 pandemic has broadened and to a population with more representative education levels.
南非将实施全民医疗保健系统，称为国民健康保险(NHI)。这个国家受到各级不平等现象的困扰，国民健康保险计划将努力提供更公平的保健机会。2020年的一项全国COVID-19在线调查衡量了受访者对这种制度的支持与否。多元逻辑回归确定了南非城市居民(总受访者12,682人)对国民健康保险的感知的独特决定因素。数据以2019年年中人口估计数为基准。结果显示，南非大多数城镇居民(77.5%)赞成全民健康保险。此外，城镇居民(aOR = 1.36, 95% CI [1.10-1.69]， p = 0.005)和非正式住区居民(aOR = 1.55, 95% CI [1.09-2.20]， p = 0.016)比居住在内城的居民更倾向于支持全民健康保险。这项研究揭示了城市居民对南非国民健康保险制度的看法。调查结果显示，大多数受访者支持全民健康保险。建议在未来的研究中，在对COVID-19大流行的认识扩大的时候，在更具代表性的教育水平的人群中，重复全民健康保险的问题。
{"title":"National health insurance in the face of COVID-19: urban tendencies in South Africa","authors":"G. Weir-Smith, T. Mokhele, S. Dlamini","doi":"10.1080/03736245.2021.2020585","DOIUrl":"https://doi.org/10.1080/03736245.2021.2020585","url":null,"abstract":"ABSTRACT South Africa is set to implement a universal health care system, called National Health Insurance (NHI). The country is plagued by inequality at various levels, and the NHI will attempt to provide more equitable access to health. A national online COVID-19 survey in 2020, measured respondents’ favour or not of such a system. Multivariate logistic regression identified unique determinants of perception of NHI among urban residents (total respondents 12,682) in South Africa. Data were benchmarked using 2019 mid-year population estimates. Results showed that the majority (77.5%) of urban residents were in favour of NHI in South Africa. Furthermore, township (aOR = 1.36, 95% CI [1.10–1.69], p = 0.005) and informal settlement (aOR = 1.55, 95% CI [1.09–2.20], p = 0.016) residents were significantly more likely to be in favour of NHI than those residing in inner cities. This research sheds light on urban people’s perception of the NHI system for South Africa. The findings showed, respondents were mostly in favour of the NHI. It is recommended that the question of NHI be repeated in future research, during a time when knowledge of the COVID-19 pandemic has broadened and to a population with more representative education levels.","PeriodicalId":46279,"journal":{"name":"South African Geographical Journal","volume":"25 1","pages":"276 - 290"},"PeriodicalIF":1.4,"publicationDate":"2022-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78787844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-02-22DOI: 10.1080/03736245.2022.2032294
Martin Magidi, P. Hlungwani
ABSTRACT This study interrogates the impacts of mining at Connemara Gold Mine on the environment and rural livelihoods for surrounding communities the mine. While we acknowledge that mining is a very lucrative business and one of the major drivers of the Zimbabwean economy, we argue that most of the benefits of mining tend to be enjoyed elsewhere and not by host communities. We roped in the Treadmill of Production and the Resource Curse theories to demonstrate the interplay between capitalism, the environment and local ordinary people’s livelihoods around Connemara mine. Data were collected through interviews with local community residents, leaders and stakeholder organizations with interests in mining who were selected through purposive and snowballing techniques. We collected data over a period of 13 weeks, interviewing twenty-five respondents in the process and undertaking a series of transect walks across the mined site and its adjacent surroundings. We discovered that mining caused extensive environmental destruction, creating artificial hills and open pits as well as promoting massive soil erosion, contaminating water and land with dangerous chemicals making them unusable for productive purposes. As a result, we conclude that mining at the site did not generate wealth for the local populace but for the mine owners and the state while impoverishing the host communities, destroying their livelihoods in doing so. We conclude by arguing that mining at Connemara is a perfect example of how the Treadmill of Production works and an evident testimony of the Resource Curse.
{"title":"Development or destruction? Impacts of mining on the environment and rural livelihoods at Connemara Mine, Zimbabwe","authors":"Martin Magidi, P. Hlungwani","doi":"10.1080/03736245.2022.2032294","DOIUrl":"https://doi.org/10.1080/03736245.2022.2032294","url":null,"abstract":"ABSTRACT This study interrogates the impacts of mining at Connemara Gold Mine on the environment and rural livelihoods for surrounding communities the mine. While we acknowledge that mining is a very lucrative business and one of the major drivers of the Zimbabwean economy, we argue that most of the benefits of mining tend to be enjoyed elsewhere and not by host communities. We roped in the Treadmill of Production and the Resource Curse theories to demonstrate the interplay between capitalism, the environment and local ordinary people’s livelihoods around Connemara mine. Data were collected through interviews with local community residents, leaders and stakeholder organizations with interests in mining who were selected through purposive and snowballing techniques. We collected data over a period of 13 weeks, interviewing twenty-five respondents in the process and undertaking a series of transect walks across the mined site and its adjacent surroundings. We discovered that mining caused extensive environmental destruction, creating artificial hills and open pits as well as promoting massive soil erosion, contaminating water and land with dangerous chemicals making them unusable for productive purposes. As a result, we conclude that mining at the site did not generate wealth for the local populace but for the mine owners and the state while impoverishing the host communities, destroying their livelihoods in doing so. We conclude by arguing that mining at Connemara is a perfect example of how the Treadmill of Production works and an evident testimony of the Resource Curse.","PeriodicalId":46279,"journal":{"name":"South African Geographical Journal","volume":"35 1","pages":"157 - 178"},"PeriodicalIF":1.4,"publicationDate":"2022-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77213815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-02-16DOI: 10.1080/03736245.2022.2030247
Z. Lidzhegu, W. Ellery, S. Mantel
ABSTRACT The topographic, climatic and tectonic conditions of the sub-continent present opportunities to better understand the role that geomorphological processes play in determining the origin of large wetlands. Yet, there is limited information on the geomorphic origin of large wetlands in southern and eastern Africa due to wetland inaccessibility and limited wetland geomorphological studies that have been conducted in these regions. The current study aims to provide an understanding of the geomorphic origin of large wetlands in Africa’s elevated drylands. Satellite images were used to identify geomorphic features, while digital elevation models were used for topographic analysis, and geological maps provided tectonic and lithological information. Abductive reasoning was used to infer geomorphic features to processes that could have led to their formation while drawing inference from existing knowledge or relevant literature. The study demonstrated different processes that contribute to wetland formation, structure, and evolution. In some instances, tectonic processes may be primarily responsible for the formation of basins that hosts wetlands such as Wembere and Bahi wetlands in Tanzania. In other cases, wetlands such as the Lufira and Barotse wetlands in the Democratic Republic of Congo and Zambia, respectively, may be structured primarily by fluvial processes.
{"title":"The geomorphic origin of large wetlands in Africa’s elevated drylands: a Geographic Information System and Earth Observation approach","authors":"Z. Lidzhegu, W. Ellery, S. Mantel","doi":"10.1080/03736245.2022.2030247","DOIUrl":"https://doi.org/10.1080/03736245.2022.2030247","url":null,"abstract":"ABSTRACT The topographic, climatic and tectonic conditions of the sub-continent present opportunities to better understand the role that geomorphological processes play in determining the origin of large wetlands. Yet, there is limited information on the geomorphic origin of large wetlands in southern and eastern Africa due to wetland inaccessibility and limited wetland geomorphological studies that have been conducted in these regions. The current study aims to provide an understanding of the geomorphic origin of large wetlands in Africa’s elevated drylands. Satellite images were used to identify geomorphic features, while digital elevation models were used for topographic analysis, and geological maps provided tectonic and lithological information. Abductive reasoning was used to infer geomorphic features to processes that could have led to their formation while drawing inference from existing knowledge or relevant literature. The study demonstrated different processes that contribute to wetland formation, structure, and evolution. In some instances, tectonic processes may be primarily responsible for the formation of basins that hosts wetlands such as Wembere and Bahi wetlands in Tanzania. In other cases, wetlands such as the Lufira and Barotse wetlands in the Democratic Republic of Congo and Zambia, respectively, may be structured primarily by fluvial processes.","PeriodicalId":46279,"journal":{"name":"South African Geographical Journal","volume":"103 1","pages":"134 - 156"},"PeriodicalIF":1.4,"publicationDate":"2022-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91233255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-02-14DOI: 10.1080/03736245.2021.2021975
J. L. Le Roux, H. Beckedahl, A. Grundling, P. Sumner
ABSTRACT Eswatini became a signatory to the Ramsar Convention on the 15th of June, 2013. To date, the country does not have a national wetland inventory. This study applies a newly developed wetland mapping technique (produced in South Africa) to Eswatini, to provide baseline information on the potential distribution of wetlands across the country. Results of this study show that when applying the mapping technique as it was applied in South Africa, watercourses (rivers, drainage lines, and riparian zones) are more frequently mapped than true wetlands. Given that Eswatini currently uses the broad Ramsar definition of a wetland, the potential wetland map produced in this study is well suited to identify wetlands falling under such definition. However, the technique does not suffice where a more specific definition for wetlands is used. To improve the initial potential wetland map, this study made use of data, obtained from 2 000 points distributed across the initial wetland map, by classifying areas with the highest potential of being wetlands into hydrogeomorphic units. Results indicate that the methods used to improve the initial map areable to distinguish watercourses with a higher potential of being a true wetland and identify certain hydrogeomorphic units. This method can therefore be used to provide baseline data of potential wetland distribution for countries that do not possess the means, or attribute data to produce a comprehensive wetland map.
{"title":"Determining the distribution of wetlands across Eswatini","authors":"J. L. Le Roux, H. Beckedahl, A. Grundling, P. Sumner","doi":"10.1080/03736245.2021.2021975","DOIUrl":"https://doi.org/10.1080/03736245.2021.2021975","url":null,"abstract":"ABSTRACT Eswatini became a signatory to the Ramsar Convention on the 15th of June, 2013. To date, the country does not have a national wetland inventory. This study applies a newly developed wetland mapping technique (produced in South Africa) to Eswatini, to provide baseline information on the potential distribution of wetlands across the country. Results of this study show that when applying the mapping technique as it was applied in South Africa, watercourses (rivers, drainage lines, and riparian zones) are more frequently mapped than true wetlands. Given that Eswatini currently uses the broad Ramsar definition of a wetland, the potential wetland map produced in this study is well suited to identify wetlands falling under such definition. However, the technique does not suffice where a more specific definition for wetlands is used. To improve the initial potential wetland map, this study made use of data, obtained from 2 000 points distributed across the initial wetland map, by classifying areas with the highest potential of being wetlands into hydrogeomorphic units. Results indicate that the methods used to improve the initial map areable to distinguish watercourses with a higher potential of being a true wetland and identify certain hydrogeomorphic units. This method can therefore be used to provide baseline data of potential wetland distribution for countries that do not possess the means, or attribute data to produce a comprehensive wetland map.","PeriodicalId":46279,"journal":{"name":"South African Geographical Journal","volume":"32 1","pages":"75 - 98"},"PeriodicalIF":1.4,"publicationDate":"2022-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80989160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-30DOI: 10.1080/03736245.2022.2028667
T. Kabanda
ABSTRACT Information on urban expansion is a significant input in forecasting upcoming land cover and land use changes in a city. This study combines Landsat 8, night-time lights, and population data to assess urban expansion in Kimberley, South Africa from 2013 to 2018. This study used a post-classification change detection approach to measure urban expansion. Urban and non-urban land use classes where the two classes mapped and evaluated for this analysis. Overall, urban expansion from 2013 to 2018 was 15% while the annual urban expansion rate experienced was 0.6%. Night-time lights, calculated from satellite imagery, are increasingly used by social scientists as a proxy for economic activity or economic development. During the period of 2013 to 2018, both the urban night-time lights and the urban population experienced high rates of growth. This study obtained a positive correlation for night-time light and population datasets of 0.51 for 2013 and 0.57 for 2018, to suggest a positive population and lighting increase in the study area. Municipal authorities and policymakers may use this knowledge as feedback during urban and environmental planning.
{"title":"Using land cover, population, and night light data to assess urban expansion in Kimberley, South Africa","authors":"T. Kabanda","doi":"10.1080/03736245.2022.2028667","DOIUrl":"https://doi.org/10.1080/03736245.2022.2028667","url":null,"abstract":"ABSTRACT Information on urban expansion is a significant input in forecasting upcoming land cover and land use changes in a city. This study combines Landsat 8, night-time lights, and population data to assess urban expansion in Kimberley, South Africa from 2013 to 2018. This study used a post-classification change detection approach to measure urban expansion. Urban and non-urban land use classes where the two classes mapped and evaluated for this analysis. Overall, urban expansion from 2013 to 2018 was 15% while the annual urban expansion rate experienced was 0.6%. Night-time lights, calculated from satellite imagery, are increasingly used by social scientists as a proxy for economic activity or economic development. During the period of 2013 to 2018, both the urban night-time lights and the urban population experienced high rates of growth. This study obtained a positive correlation for night-time light and population datasets of 0.51 for 2013 and 0.57 for 2018, to suggest a positive population and lighting increase in the study area. Municipal authorities and policymakers may use this knowledge as feedback during urban and environmental planning.","PeriodicalId":46279,"journal":{"name":"South African Geographical Journal","volume":"49 1","pages":"539 - 552"},"PeriodicalIF":1.4,"publicationDate":"2022-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82221404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-25DOI: 10.1080/03736245.2021.2010590
Hang Ren, Zhenke Zhang, Priyanko Das
ABSTRACT The process of urbanization in Africa is receiving global attention and is subject to comprehensive scientific research due to the wide socioeconomic influence of this continent. Adopting specific search terms and strategies, this paper conducts a statistical analysis of the research articles addressing African urbanization (n = 2046) from the Web of Science core collection. The results show that since 2006, research on African urbanization has entered a stage of rapid development. South Africa and the Global North are the main regions engaged in research on African urbanization. With the application of the bibliometric software HistCite, this paper tries to investigate the research streams and trends contributed by highly cited articles. The main research streams can be divided into 5 areas, with the relationship between disciplines becoming stronger. Population, economy and land-use are the core issues of African urbanization studies, with the largest volume of highly cited articles. Furthermore, the changes in research hotspots were explored based on keyword analysis by CiteSpace. The results indicate that the topics of research hot spots by African and Global North researchers are different, and the Global North has a stronger influence on African urbanization studies.
由于非洲大陆广泛的社会经济影响，非洲的城市化进程受到全球的关注，并受到全面的科学研究。本文采用特定的检索词和检索策略，对Web of Science核心馆藏中有关非洲城市化的研究文章(n = 2046)进行了统计分析。结果表明，2006年以来，非洲城市化研究进入快速发展阶段。南非和全球北方是从事非洲城市化研究的主要地区。本文运用文献计量软件HistCite，对高被引文章的研究流和趋势进行了调查。主要研究方向可划分为5个领域，学科之间的联系日益紧密。人口、经济和土地利用是非洲城市化研究的核心问题，高被引文章数量最多。通过CiteSpace的关键词分析，探讨了研究热点的变化。研究结果表明，非洲和全球北方研究人员研究热点的主题不同，全球北方对非洲城市化研究的影响更大。
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