Land Use/Cover Dynamics and its Implication on the Sustainability of Urban Agriculture in Selected Urban Centers of Ethiopia

Ashagrie Gibtan, W. Abera, Mekuria Delelegn, Molla Maru, Adamu Emiru
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Abstract

Abstract Analysis of urban Land Use/Land Cover (LULC) dynamics in light of urban agriculture (UA) helps to understand its implication for UA practice and in turn making the necessary interventions. Therefore, the main objective of this study was to examine the LULC dynamics in selected urban centers of Ethiopia (Addis Ababa, Bahir Dar, Adama, and Hawassa cities) for the last seventeen years (2006–2022). SPOT 5 satellite imagery for the year 2006 and 2016 and Sentinel image for the year 2022 were analyzed. In addition, data from key informant interviews, focus group discussions, and field observations were used to triangulate LULC analyses information and to identify the main causes of LULC dynamics in the studied urban centers. The findings reveled that there were rapid expansion of urban built-up areas at the expense of other urban LULC types mainly of peri urban horticultural lands for the last 17 years (2006‒2022) in Addis Ababa, Hawassa, Bahir Dar, and Adama cities of Ethiopia. This has adverse impact on the sustainability of UA. Rapid urban population growth mainly because of high rural urban migration, expansion of squatter settlement, and increment of investment were the main driving forces of LULC dynamics. Based on the findings of this study (changes in LULC and driving factors) the studied cities administrations or authorities need to develop sustainable development plans by considering UA.
埃塞俄比亚部分城市中心的土地利用/植被动态及其对城市农业可持续性的影响
摘要 根据城市农业(UA)分析城市土地利用/土地覆盖(LULC)动态有助于了解其对 UA 实践的影响,进而采取必要的干预措施。因此,本研究的主要目的是考察埃塞俄比亚部分城市中心(亚的斯亚贝巴、巴哈达尔、阿达马和哈瓦萨市)过去十七年(2006-2022 年)的土地利用/土地覆盖动态。对 2006 年和 2016 年的 SPOT 5 卫星图像以及 2022 年的哨兵图像进行了分析。此外,还利用关键信息提供者访谈、焦点小组讨论和实地观察所获得的数据,对土地利用、土地利用变化和林业分析信息进行了三角测量,并确定了研究城市中心土地利用、土地利用变化和林业动态的主要原因。研究结果表明,在过去 17 年(2006-2022 年)里,埃塞俄比亚亚的斯亚贝巴、哈瓦萨、巴哈达尔和阿达马等城市的城市建成区迅速扩张,牺牲了其他城市 LULC 类型,主要是城市周边的园艺用地。这对普遍获得土地的可持续性产生了不利影响。城市人口的快速增长主要是由于大量农村人口向城市迁移、棚户区的扩大以及投资的增加,这些都是 LULC 动态变化的主要驱动力。根据这项研究的结果(土地利用、土地利用变化和驱动因素的变化),所研究的城市管理部门或当局需要通过考虑普遍获得服务来制定可持续发展计划。
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