Alemu Mulugeta, Warkineh Bikila, Lulekal Ermias, Asfaw Zemede
Addis Ababa University, College of Natural and Computational Sciences, Department of Plant Biology and Biodiversity Management, Addis Ababa, Ethiopia.
Nefas Silk Polytechnic College, Department of Urban Agriculture, Addis Ababa, Ethiopia.
Heliyon. 2024 Oct 5;10(19):e38971. doi: 10.1016/j.heliyon.2024.e38971. eCollection 2024 Oct 15.
This study examines spatiotemporal changes in Land Use Land Cover (LULC) patterns within Habru District, Amhara Region, Ethiopia, between 1985 and 2021. Employing Landsat imagery and a supervised classification approach, we mapped six LULC classes: water body, settlement area, cultivated land, bare land, shrub land, and forest land. Ground control points (GCP) were obtained through field observations to ensured image accuracy. Complementing the remote sensing analysis, focus group discussions (FGDs) and key informant interviews were conducted to understand local perspectives on LULC changes. The analysis revealed significant LULC transformations over the study period. Between 1985 and 2021, there was a significant increase in cultivated land and settlement areas, which expanded from 12.27 % to 0.23 %-42.12 % and 2.58 % of the total area, respectively. Conversely, shrub and forest lands saw a marked reduction during the same period, declining from 71.52 % to 12.88 %-45.35 % and 7.06 % of the total area, respectively. Water body area showed a minor increase, while bare land exhibited negligible change. Agricultural land and settlement area expansion, population growth, land tenure insecurity, economic challenge, and climatic change were identified as key drivers of observed LULC changes. Our findings underscore the urgency of implementing multifaceted interventions to address these drivers and promote sustainable resource use practices. Such actions are critical for safeguarding Habru District's natural resources and ensuring the long-term viability of ecosystem services.
本研究考察了1985年至2021年期间埃塞俄比亚阿姆哈拉州哈布鲁区土地利用土地覆盖（LULC）模式的时空变化。利用陆地卫星图像和监督分类方法，我们绘制了六种LULC类别：水体、居住区、耕地、裸地、灌木地和林地。通过实地观测获得地面控制点（GCP）以确保图像准确性。作为遥感分析的补充，开展了焦点小组讨论（FGD）和关键信息人访谈，以了解当地对LULC变化的看法。分析显示，在研究期间LULC发生了显著变化。1985年至2021年期间，耕地和居住区显著增加，分别从占总面积的12.27%扩大到0.23%-42.12%和从2.58%扩大到占总面积的比例。相反，同期灌木地和林地显著减少，分别从占总面积的71.52%降至12.88%-45.35%和从7.06%降至占总面积的比例。水体面积略有增加，而裸地变化可忽略不计。农业用地和居住区扩张、人口增长、土地权属不安全、经济挑战和气候变化被确定为观察到的LULC变化的关键驱动因素。我们的研究结果强调了实施多方面干预措施以应对这些驱动因素并促进可持续资源利用做法的紧迫性。此类行动对于保护哈布鲁区的自然资源和确保生态系统服务的长期可行性至关重要。
