Using geographic information system to analyse the divergence of urban development from spatial plans in Harare, Zimbabwe

IF 0.3 Q4 REMOTE SENSING South African Journal of Geomatics Pub Date : 2020-09-14 DOI:10.4314/sajg.v9i2.15
D. Machakaire, N. Tapela, Masilonyane Mokhele
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Abstract

Africa is experiencing rapid urbanisation, which calls for well-considered urban and regional planning efforts to cater for the current and future populations. However, as it is typically the case in the global South, African countries are characterised by a lack of quality spatial economic data required for planning and evaluation processes. Using the study area of Harare, Zimbabwe, the paper demonstrates ways that, amidst the paucity of data, geographic information system can be used to measure urban development’s congruence with spatial plans. To prepare for the analysis, the base map preparation process entailed a laborious digitisation of hardcopy material obtained from the authorities. This was followed by land-use surveys and land-use change investigations whose data were analysed in ESRI’s ArcGIS 9.3. The analysis compared urban development patterns in 2014 with the proposals of two applicable spatial plans, which were approved in 1990 and 2000 respectively. The investigations uncovered that urban development patterns and trends did not correspond with the aspirations of the plans. The paper proposes that follow-up research be conducted on factors that influence the misalignment between plans and development, particularly in African countries that are characterised by rapid urbanisation.
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利用地理信息系统分析津巴布韦哈拉雷城市发展与空间规划的差异
非洲正在经历快速的城市化,这需要经过深思熟虑的城市和区域规划工作,以满足当前和未来的人口需求。然而,正如全球南非的典型情况一样,非洲国家的特点是缺乏规划和评估过程所需的高质量空间经济数据。利用津巴布韦哈拉雷的研究区域,该论文展示了在数据匮乏的情况下,可以使用地理信息系统来衡量城市发展与空间规划的一致性的方法。为了准备分析,底图的准备过程需要对从当局获得的硬拷贝材料进行费力的数字化。随后进行了土地利用调查和土地利用变化调查,其数据在ESRI的ArcGIS 9.3中进行了分析。该分析将2014年的城市发展模式与分别于1990年和2000年批准的两个适用空间规划的建议进行了比较。调查发现,城市发展模式和趋势与计划的愿望不符。该论文建议对影响计划与发展之间不一致的因素进行后续研究,特别是在以快速城市化为特征的非洲国家。
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