Urban land use dynamics, the nexus between land use pattern and its challenges: The case of Hawassa city, Southern Ethiopia (original) (raw)
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Urbanization and land use pattern in Arba Minch town, Ethiopia: driving forces and challenges
GeoJournal, 2019
The objective of this study was to explore the driving forces of urbanization, land use pattern, and its challenges in Arba Minch town, Southern Ethiopia. Mixed research design was employed to generate and analyze data. Four sample kebeles [Mehal Ketema, Dilfana, Bere and Woze] were selected using simple random sampling technique. Stratified proportional sampling technique was used to obtain data from selected kebeles (197 households) through questionnaires. Interviews were made with key informants. Aerial photo, Google Earth Image and Satellite images of LANDSAT (1975, 2000 and 2018) were visualized to quantify land use and land cover [LULC] change and its pattern. Field observation was made to cross-check results from other sources. Data was analyzed using SPSS (23), Erdas Imagine (2014) and ArcGIS (10.3). The study revealed rapid urbanization mainly induced by migration. Physically, Arba Minch has grown from fragmented neighborhoods (since 1950s to mid 1970s) to a conurbated urban fabric in recent years. Built-up area has increased by 780 ha at the expense of agriculture, plantation and
UTTAR PRADESH JOURNAL OF ZOOLOGY, 2022
Urban expansion is widespread in most developing countries while the nearby farmland area coverage is shrinking which in turn attracting the attention of many actors to manage the encroachment scientifically. This study aims to analyze the urban land use and land cover change in Hossana town using geospatial techniques. Three Landsat images were used and analyzed using ArcMap 10.5. The images were classified and reclassified into six land use classes. The result showed visible land cover change and a high rate of town expansion in the study area. The forest area surrounding the town and bareland decreased from 5702 (48.8 %) to 1515 ha (12.97 %) and from 2224.3 ha (19.1%) to 226.2 ha (1.94 %) from 1986 to 2019 whereas farmland and built-up areas increased rapidly from 3078 ha (26.4%) to 5599.5 ha (47.95%) and from 141.1 (1.2%) to 3581.4 ha (30.67%) in the study period, respectively. Thus, the land cover change result for the built-up area has eventually expanded through the study period. In contrary, the land cover under forest, water, bareland, open area (greenery) and farmland have shown tremendous decrease within the last three decades, respectively. The expansion of farmland and settlement areas implies high population inflow to the urban area from the rural and fringe areas.
Urban sprawl and its impacts on land use change in Central Ethiopia
Urban Forestry & Urban Greening, 2016
This study aimed to understand the major drivers of urban sprawl and its impacts on land use conversion in the peri-urban kebeles of the Dukem town, Central Ethiopia. GIS software was used to create status and location maps of industries out of the GPS data. The results from qualitative data obtained from interviews and focus group discussions showed that more land was used beyond the total size of land allocated initially planned for. Furthermore, urban sprawl has also caused an extensive agricultural land conversion (ALC) that has seriously affected agricultural production. Industrialization, residential expansion and infrastructure development were identified as the leading drivers of ALC that negatively affects the size of cultivated land and food crop production in the hinterlands. In contrast with government policies and community expectations, most converted lands had a very low development status and some of them were underdeveloped and demonstrated leapfrog sprawling.
Urban expansion is one of the key problems in Ethiopia resulting in displacement of the rural people inhabiting areas bordering the cities/towns. It is also resulting in land use land cover (LULC) changes affecting the livelihoods of the people and the ecosystems [1,2]. The data presented in this article, therefore, shows the spa-tiotemporal LULC changes of peri-urban expansion areas known as Koye-Feche and Qilinto, around Addis Ababa City (the capital of Ethiopia). The data were generated from Landsat Thematic Mapper (TM) and Enhanced Thematic Mapper Plus (ETM þ) images (with path/row numbers 168/054) by using ERDAS EMAGINE 2014 software. The precision of the images was verified by geolocation data collected from ground control points by using Geographic Positioning System (GPS) receiver. The data indicate that the built-up areas have increased by 1017.85 ha (10.178 km 2) with 89.1%, 58.4%, 47% and 13% decline of plantation (mostly eucalyptus woodlots), grasslands, riverine vegetation (forestland) and cropland, respectively , between 1986 and 2016.
This paper describes mainly by focusing on the land use land cover dynamics of Jigjiga town, the capital of Ethiopian Somali region. The implications of changes was also investigated using the working power of GIS environment. Satellite images were integrated with GIS working interface and it was very effective in analyzing the direction, rate and spatial pattern of the changes. The time interval considered was fifteen years of different times and three land use land cover maps were produced from each year (1985, 2000 and 2015) at the specified interval. These time intervals were taken based on the prevalence of the government changes coming to power with their respective policies and strategies. The analysis shows that four major land use land cover classes exist in the area. These include built-up area, grass land, shrub land and open areas. They show changes at times with variation in magnitude and pattern of changes. During the study periods, built-up areas are getting continuous increment while grass lands are continuously decreasing. This indicates as the pre-existing grass land areas are highly converted in to either built-up areas or any open area left over unutilized. This is done due to the increase in population in the area demanding plots of areas for their survival. On the other hand, shrub lands shows fluctuations due to similarity of spectral reflectance patterns with either grass lands or open areas where as open areas got continual increase since there exists left over plots in between different blocks and units of built-ups. The major general factors of the land use land cover changes include population growth and density, encouraging urban expansion policies, being economic corridor of the area attracting many people from different corners of the country and land ownership condition. Therefore, level of urbanization is directly interrelated with the existence of appropriate urbanization policy. Generally, different land classes undergo changes overtime due to the existence of factors like policies, population number, land ownerships and satellite image analysis using ERDAS and ARcGIS software is a very effective method in such a study.
Landscape and Urban Planning, 2012
This study evaluated the dynamics of urban expansion and its impacts on land use/land cover change and livelihoods of small-scale farmers living near the urban fringe of Bahir Dar in northwest Ethiopia. Aerial photos for the years 1957, 1984, and 1994 as well as field mapping using GPS for the year 2009 were employed and analyzed using GIS. Heads of 271 households affected by the expansion were interviewed to evaluate the impacts of expansion and compensation modalities in practice. Results showed that the urban area expanded annually by about 12%, 14% and 5% during the periods: 1957-1984, 1984-1994 and 1994-2009, respectively. The area showed an overall annual increment of 31%, from 279 ha in 1957 to 4830 ha in 2009. Built-up areas increased as a result of horizontal expansion, from 80 ha in 1957 to 848 ha in 1994, but also due to intensification at the expense of agricultural areas, from 80 to 155 ha, during the same period. A total of 242.2 ha of farmland was expropriated from 271 households between 2004 and 2009, and 96% of those interviewed believed that the compensation was insufficient, as the decision is influenced by the government's land ownership system. We predict that the current urban area will double by 2024. This will have far-reaching ecological, socio-economic and environmental impacts. A better understanding of the dynamics of urban growth and its associated impacts in the urban fringe can help form a basis for sustainable planning of future developments of areas experiencing urban expansion.
ABSTRACT This paper assessed the spatiotemporal analysis of recent land use and land cover changes of Goro District, South west shewa, central Ethiopia. This study was aimed at to map and quantify Land-use/Land-cover change and spatiotemporal analysis of Goro district between 1995 and2015. Integrated Remote Sensing (RS) and Geographical Information System (GIS) techniques were effectively applied for analyzing the magnitude, rate, and spatial pattern of land use change The Land-use/Land-cover and urban expansion dynamics of the town was the result of remotely sensed multi-temporal satellite imageries interpretation traced back to 1995, 2005 and 2015. Land-use/Land-cover area changes detection of land cover classes comparison between each study period was computed. The supervised image classification method with maximum likelihood probability algorithm has been employed for the land -cover classification in ENVI4.7 software. Four land use and land cover maps were produced by analyzing multi temporal remotely sensed images of three dates from Landsat satellite imageries and shows the major land use and land cover types. These include forest, shrub or bush, grass and agricultural land. In between (1995 to 2015), there was a dramatic expansion of grassland followed by forest however; shrub and farm land shows a reduction in aerial coverage. On the other hand in between 2005 to 2015, the inverse is true for agricultural land and shrub land shows a dramatic expansion but grass and forest land shows a reduction in the aerial coverage. The human driving factors include Population growth and density, over intensification of land use, farm size and policies on land use. The other driving forces for these changes were natural factors such as drought and Climate change. These factors results in various forces and strong effect to change the quantity and quality of land use. Keywords: Land Use/Land Cover classes; GIS; Remote sensing; spatiotemporal; Ethiopia
The Dynamics of Land Use Land Cover and its Driving Forces in Mekelle City Region, Ethiopia
Asian Review of Environmental and Earth Sciences, 2021
The rationale of this study was to study the spatio-tempo LULC dynamics over the past 47 years and identifying the major drivers of these changes. It was conducted in Mekelle city region, northern Ethiopia which is highly susceptible to environmental degradation. This landscape-scale level study employs a combination of analysis of satellite imageries, information from field studies, document review, key informant interview and observation. Digital satellite images were processed, classified and analysed by ERDAS Imagine. Computations of the area changes in the land use categories was made using supervised classification by applying maximum likelihood classifier algorithm and finally post-classification change detection technique was undertaken using Arc GIS 10.5.1. For stastical analysis of variables spatial autocorrelation and structural equation model was used. During the study period between 1972 and 2019 about 60,705.56 hectares of the total landscape of the study area was converted from one LULC type to another. The findings show increase was observed in cultivated land, built-up area and bushes and shrubs. On the other hand, natural forest, water body and bare lands were dramatically declined. Among the driving factors; climate variability, population growth, DEM and slope were identified as the leading land use and land cover change drivers. Thus, spatial planners need to take these drivers into consideration and make sound decisions regarding changes in LULC during decision makings.
2021
Currently, circa 30% of the population in sub-Saharan Africa resides in cities, and this figure is expected to double in 2040. The recent literature describes the urban expansion processes of African cities in much detail. However, the urbanization wave in Africa also leads to important intra-urban land use dynamics, which have important consequences on the quality of life within existing cities, which has received less attention. This study aims to contribute to these information gaps by (1) analyzing the extent of the urban land use conversion in contrasting urban locations using satellite images for physical criteria-based classifications and (2) assessing the potential consequences of these intra-urban conversions on the quality of life. Intra-urban land use changes were documented based on satellite imagery for the period 2002–2020. Based on some representative attributes, Addis Ababa city was selected for the case study. Urban land use dynamics and population density changes w...
2015
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