Trends and Frequencies of Extreme Rainfall Events in the Urban Catchments of Dar es Salaam, Tanzania

Mzava, Philip; Valimba, Patrick; Nobert, Joel

doi:10.56279/jgat.v40i1.17

Cited by 3 publications

(3 citation statements)

References 19 publications

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“…The NDBI remains a good approach and an effective method for using LANDSAT images to automatically map out urban built-up areas (Chunyang et al, 2010). The Normalized Difference Vegetation Index (NDVI) is an indicator used to identify the presence of green vegetation (Mzava et al, 2019). This indicator for identifying the vegetation index is also used to quantify urban and infrastructure development and the growth of settlements by observing the decline in green vegetation over a period of time.…”

Section: Image Classificationmentioning

confidence: 99%

Tragedy of urban green spaces depletion in selected sub-Sahara African major cities

Seth,

Kwaku,

Michael

et al. 2023

J. Afr. Stud. Dev

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Urban green spaces (UGS) play important role in enhancing the socioeconomic and environmental health of cities around the world. For instance, UGS such as playgrounds, parks and residential greenery provide relief from mental and physical stress in densely populated areas. In spite of the significance of UGS in urban life and city development, their depletion rate in sub-Saharan countries seems alarming. Based on mixed methods approach including content analysis of relevant publications and spatiotemporal analyses, this paper discusses urban green spaces depletion in three randomly selected sub-Saharan African cities. The selected cities are Dar es Salaam, Accra, and Luanda. The study reveals a disturbing trajectory of UGS depletion in the selected cities. The causation factors include (a) pressure of rapid urbanization; (b) weak urban planning regulations; (c) socioeconomic challenges; and (d) weak institutions. Policy implications of these findings include the need to prepare and implement public park plans at regional and the local levels, and build institutional competence and capacity to address rapid depletion of urban green spaces (UGS) in sub-Saharan African cities.

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Section: Image Classificationmentioning

confidence: 99%

Tragedy of urban green spaces depletion in selected sub-Sahara African major cities

Seth,

Kwaku,

Michael

et al. 2023

J. Afr. Stud. Dev

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“…The spatial-temporal analysis of declining forests using DEM has been widely accounted for in Himalayan regions. The studies by [28][29][30][31] have used slope and elevation to comprehend the trend and direction of LULC changes.…”

Section: Introductionmentioning

confidence: 99%

Geospatial Assessment Of Urban Sprawl Using Remote Sensing And GIS: A Case Study of Western Himalayan City of Dharmashala, Himachal Pradesh, India.

Mehra,

Swain

2024

IOP Conf. Ser.: Earth Environ. Sci.

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The small cities in the Asian subcontinent are supposedly going to witness exponential growth in the next two decades. The situation could be very challenging in Himalayan cities owing to topo-geographical complexities and limited resources in the region. The increasing population coupled with being a favored tourist destination had resulted in dispersed, inefficient, and unplanned built-up activities in the region. Monitoring the urban sprawl can help in adopting sustainable development strategies equally balanced towards the society and environment. The availability of geospatial data integrated into the GIS interface can help immensely in monitoring and measuring LULC changes and thereby help in formulating necessary interventions and strategies for realizing a sustainable ecosystem. The present study employs Landsat imagery for creating the built-up land cover maps for the year 2016, 2019, and 2022 and the ALOS-PALSAR Digital Elevation Model for understanding the trend and direction of urban sprawl in Dharamshala city. It was found in the study that the built-up dynamic index had increased to 23.3% from the year 2016 to 2022. The built-up growth rate for the study period was found to be 145% for the elevation less than and equal to 1000m, 143% for elevations ranging from 1000-1500m, and 119% for the elevation greater than 1500m. The built-up growth rate for a distance up to 100 m from the streams was 119% from the year 2016 to 2022. The geospatial risk assessment highlights potential threats in the region due to increased built up activities, emphasizing the need for prompt intervention by policy-makers, administrators, and environmentalists to advocate for a sustainable development model.

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“…Studies by Haneem and Kama (2018) and Zabadi (2016) prove that strong local revenue collection enables LGAs to respond better to citizens' needs. In Tanzania, initiatives have been taken by LGAs since the 1990s to establish GITS and integrate it into their functions to enhance revenue collection and implement spatial technologies (Mzava et al, 2019;Namangaya, 2018;Worrall et al, 2017;Mtalo, 2016;World Bank, 2015). Since 2006, numerous GITSs have been obtained and installed in LGAs in Tanzania, with the assistance of the World Bank, TSCP, and PO-RALG (Sausi et al, 2021;Kessy, 2019;McCluskey & Huang, 2019;McCluskey et al, 2018;Pérez-Mira et al, 2017) to support decision-making, policy, and planning.…”

Section: Introduction 11 Background Of the Studymentioning

confidence: 99%

Geospatial Information Technology Systems And Revenue Collection: The Case of Ilala City Council And Kinondoni Municipal Council

Massawe,

Mwanukuzi

2023

Tanzania Journal for Population studies and Development

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This study investigated the influence of critical success factors in boosting the performance of geospatial information technology systems (GITSs) in local government authorities. Data for was collected using a questionnaire involving business centres. Analysis was done using inferential statistics to analyse both primary and secondary data. The study employed a quantitative analysis approach, which was supported by two related concepts of diffusion of innovation and institutional theories: the technological, organizational, and environmental framework, and the technology acceptance model. The model was used to describe user perceptions, and actual geospatial information technology systems utilization, to acquire the perceptions of local government authorities, users and business license taxpayers. The study results revealed that technological, organizational and individual support are significant factors for enhancing geospatial information technology systems performance in local government authorities revenue collection, but their ranking is in the order T,O,P,S,E,I. The significance of this study is that it provides a credible approach, based on sound principles, for determining the most important factors that influence the performance of the applications of geospatial information technology systems within local government authorities.

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Trends and Frequencies of Extreme Rainfall Events in the Urban Catchments of Dar es Salaam, Tanzania

Cited by 3 publications

References 19 publications

Tragedy of urban green spaces depletion in selected sub-Sahara African major cities

Tragedy of urban green spaces depletion in selected sub-Sahara African major cities

Geospatial Assessment Of Urban Sprawl Using Remote Sensing And GIS: A Case Study of Western Himalayan City of Dharmashala, Himachal Pradesh, India.

Geospatial Information Technology Systems And Revenue Collection: The Case of Ilala City Council And Kinondoni Municipal Council

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