Papers by Asfaw Mohamed
Journal of Urban Management
Uncontrolled urban growth and haphazard land developments are one of the crucial problems in Addi... more Uncontrolled urban growth and haphazard land developments are one of the crucial problems in Addis Ababa and the surrounding Oromia special zone causing environmental degradation and rural-urban land base conflicts. This is mostly because of the rapidly increasing built-up area that conquered large tracts of natural green spaces and prime agricultural lands. The research compared the land use-land cover (LULC) change, demographic dynamic, the sprawling patterns and the degree of built-up growth goodness. Methodologically, the study applied a multi-step geospatial and statistical modeling techniques, and it also employed the Shannon entropy index and the degree of freedom to measure the sprawling pattern and the degree of goodness of urban growth. Accordingly, the dynamic LULC change index identified the built-up area as the most dynamic land cover type and the intensity index depicted that a large part of the area was on the high-speed urban expansion level. Moreover, this study approved that the effects of the sprawling pattern have strong momentum to push the region’s built-up dynamics than the population increase and it also confirmed that a prevalence of high built-up sprawling and bad urban growth conditions. Therefore, the study lay emphasis on an integrated urban-regional planning and management approach and quantifying the built-up intensity, sprawling and the degree of urban growth goodness as a tool to control the LULC dynamics and enhancement of a rational decision on sustainable urban growth planning and management.
Geology, Ecology and Landscape , 2019
Rapid urbanization in Addis Ababa and the surrounding area resulted in the rapid land use/ land c... more Rapid urbanization in Addis Ababa and the surrounding area resulted in the rapid land use/ land cover (LULC) change that affected landscape structures and ecological functions. This study aimed at quantifying and mapping the spatial patterns of landscape structure for a sustainable city region landscape conservation planning and management. GIS and statistical tools were used to compute important landscape metrics. Pearson Correlation and factor analysis were also applied to reduce redundant indices and identify underlining factor of the landscape structure by network of hexagonal area. The analysis depicted four landscape and four class-level underlined metrics. Accordingly, as the region overall landscape was characterized by patch size and density, shape and texture (interspersion) index, the forest class also attributed by patch size and density, and shape metrics. The result shows that the region landscape planning and management schemes must emphasize on the level of patch fragmentation and landscape complexity to maintain the natural land cover habitat functioning, the amount of ecological process and extent of human intervention. This research will help scientific base decision-making in conservation planning and management of the tropical highland urban landscape in general, and the study area in particular. ARTICLE HISTORY
City and Environment Interactions, 2020
Uncontrolled urban growth, subsequent suburbanization, sprawling, and haphazard land development ... more Uncontrolled urban growth, subsequent suburbanization, sprawling, and haphazard land development are the crucial urban development problems of Addis Ababa and the surrounding Oromia special zone causing environmental degradation and rural-urban land-based conflicts. In fact, this is mainly because of the lack of proper urban and regional planning approaches and methodology. Although different research works and planning attempts were made, there are still some openings to address interregional urban land development, a choice of regional planning approaches, and its implication on the growing local interest and urban-rural synergy. The objective of this study was to scrutinize approaches for sustainable urban and regional planning, management, and urban-rural synergy. Document analysis, observation, and interviews were employed to collect the data. The study identified top-down and non-participatory approaches of urban and regional planning, problems of good governance, and weak institutional frameworks. Therefore , an eclectic smart city-region planning approach is required for the sustainable rural-urban synergistic development not only in the study area but also in the country's urban system at large.
Applied Geomatics , 2020
Addis Ababa city has a degraded stream ecosystem and redundant flash flooding that can destroy th... more Addis Ababa city has a degraded stream ecosystem and redundant flash flooding that can destroy the existing urban infrastructure and utilities. This research aimed to map flash flood vulnerability of the Kebena watershed inside Addis Ababa and evaluate the status of the riparian landscape. Methodologically, the study employed the Biophysical Composition Index (BCI) to detect impervious surfaces and the Normalized Difference Vegetation Index (NDVI) to classify the vegetation cover. The Arc-hydro tool was used to identify micro-watersheds and measure the morphometric factors, then principal component analysis (PCA) identified the surrogate factors. Fuzzy overlay analysis combined land cover and morphometric analysis results to produce the final flash flood vulnerability map. Moreover, riparian buffering at 15, 30, and 90 m distances were defined to measure the degree of imperviousness, greenness, and vulnerability to flash flooding. Accordingly, 969 ha of land was depicted within the watershed as flash flood vulnerable areas. These areas are primarily found in the southeastern and southwestern parts where impervious land cover prevailed, and the northwestern portion which has extremely rugged terrain and has a sparse vegetation cover. For all buffering distances, the proportion of impervious surface is greater than the vegetation cover. Even within 15 m buffering distance, which was set as the national urban planning standard. It is concluded that Kebena watershed is vulnerable to flash floods as the riparian landscape is dominated by impervious and depleted vegetation cover. Therefore, integrated geospatial and statistical techniques are helpful to devise a method for sustainable riparian landscape monitoring.
Research Article, 2019
Uncontrolled urban growth and haphazard land developments are one of the crucial problems in Addi... more Uncontrolled urban growth and haphazard land developments are one of the crucial problems in Addis Ababa and the surrounding Oromia special zone causing environmental degradation and rural-urban land base conflicts. This is mostly because of the rapidly increasing built-up area that conquered large tracts of natural green spaces and prime agricultural lands. The research compared the land use-land cover (LULC) change, demographic dynamic, the sprawling patterns and
the degree of built-up growth goodness. Methodologically, the study applied a multi-step geospatial and statistical modeling techniques, and it also employed the Shannon entropy index and the degree of freedom to measure the sprawling pattern and the degree of goodness of urban growth. Accordingly, the dynamic LULC change index identified the built-up area as the most dynamic land cover type and the intensity index depicted that a large part of the area was on the high-speed urban expansion level. Moreover, this study approved that the effects of the sprawling pattern have strong momentum to push the region’s built-up dynamics than the population increase and it also confirmed that a prevalence of high built-up sprawling and bad urban growth conditions. Therefore, the study lay emphasis on an integrated urban-regional planning and management approach and quantifying the built-up intensity, sprawling and the degree of urban growth goodness as a tool to control the LULC dynamics and enhancement of a rational decision on sustainable urban growth planning and management.
Thesis Chapters by Asfaw Mohamed
MA thesis , 2007
Several housing policies and programs have been launched to mitigate the urban housing problems o... more Several housing policies and programs have been launched to mitigate the urban housing problems of the poor. Nevertheless, they failed to address the low-income groups of society. Failure in considering low-income groups results to proliferate illegal settlement. One of the programs, which attempted in Ethiopia with special consideration of improving low-income groups’ access to the legal plot, activity promotion and planned development of peripheral hinterland, is Urban Field Development UFDE program. This program attempt to implement in Keranio (Addis Ababa) and Debre Zeit (Oromia) site at the pilot level. Hence, this study is intended to assess the feasibility, implementation, and impact of the project as well as to explain some of the socio-economic characteristics of the beneficiaries. To meet these objectives 106 (25 percent) sample households were taken from 425 Keranio project participants.
The survey data indicate that the majority (86.8 percent) of the respondents is from the low-income groups, and lion’s share (about 42.5 percent) of the surveyed households’ income increased after the resettlement. Moreover, the large number of the sampled houses is built up by traditional construction material like Chika wall and Earth floor, regarding the occupancy rate, the majority of them are adequately occupied. On the other hand, as almost all of the respondents have their own eclectic ammeter, and about 83 percent of them have own telephone, the largest proportion (94.3percent) of the respondents obtain water from the public tap (Bono) and stream and wells. As to the canonical correlation analysis, it shows that the household who occupied the larger area and somehow earn higher income tend to relatively have higher satisfaction with kitchen, open space or land as well as to have a higher number of rooms, whereas less satisfaction with toilet.
One of the important achievements of the major objectives of the project is providing access for the legal plot to the low-income households and controlled urban peripheral expansion. However, the Keranio UFD project totally failed in its components of promoting activities and providing some basic services that may create some form of peripheral deprivation.
Therefore, this project is not feasible to replicate for large scale urban development unless some kinds of amendments are made in its objectives and some of its components, and special consideration should be made on the plot size particularly 70 square meters occupants infrastructural development like road and footpaths, and water supply.
Conference Presentations by Asfaw Mohamed
Hawassa University, Proceedings of Annual Research Review Workshop, College of Social Sciences and Humanities, 2015
This study analyzes the role and factors of Bajaj taxi transport in Hawassa city administration. ... more This study analyzes the role and factors of Bajaj taxi transport in Hawassa city administration. Results were shown the Bajaj taxi transport role in terms of drivers and passengers’ side. Bajaj taxi as any other intermediate public transport system is playing an important role by giving door to door short distance journeys of majorities of the city inhabitants particularly low-income groups of society. It also improves the life of large number of young people by making use of as
employment opportunities. It also helps as a substitute for another type of urban public transport. On the drivers’ side as they satisfy different parameters of the qualities of their life they have some compliant on traffic flow control system and tariff fixing mechanisms, and they are also dissatisfied with their own expense and saving behavior. On the passengers’ side, as they have higher satisfaction most of the public transport system measuring parameters, they have also some kind of
inconvenience on crime and theft control mechanisms, and safety and security.
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Papers by Asfaw Mohamed
the degree of built-up growth goodness. Methodologically, the study applied a multi-step geospatial and statistical modeling techniques, and it also employed the Shannon entropy index and the degree of freedom to measure the sprawling pattern and the degree of goodness of urban growth. Accordingly, the dynamic LULC change index identified the built-up area as the most dynamic land cover type and the intensity index depicted that a large part of the area was on the high-speed urban expansion level. Moreover, this study approved that the effects of the sprawling pattern have strong momentum to push the region’s built-up dynamics than the population increase and it also confirmed that a prevalence of high built-up sprawling and bad urban growth conditions. Therefore, the study lay emphasis on an integrated urban-regional planning and management approach and quantifying the built-up intensity, sprawling and the degree of urban growth goodness as a tool to control the LULC dynamics and enhancement of a rational decision on sustainable urban growth planning and management.
Thesis Chapters by Asfaw Mohamed
The survey data indicate that the majority (86.8 percent) of the respondents is from the low-income groups, and lion’s share (about 42.5 percent) of the surveyed households’ income increased after the resettlement. Moreover, the large number of the sampled houses is built up by traditional construction material like Chika wall and Earth floor, regarding the occupancy rate, the majority of them are adequately occupied. On the other hand, as almost all of the respondents have their own eclectic ammeter, and about 83 percent of them have own telephone, the largest proportion (94.3percent) of the respondents obtain water from the public tap (Bono) and stream and wells. As to the canonical correlation analysis, it shows that the household who occupied the larger area and somehow earn higher income tend to relatively have higher satisfaction with kitchen, open space or land as well as to have a higher number of rooms, whereas less satisfaction with toilet.
One of the important achievements of the major objectives of the project is providing access for the legal plot to the low-income households and controlled urban peripheral expansion. However, the Keranio UFD project totally failed in its components of promoting activities and providing some basic services that may create some form of peripheral deprivation.
Therefore, this project is not feasible to replicate for large scale urban development unless some kinds of amendments are made in its objectives and some of its components, and special consideration should be made on the plot size particularly 70 square meters occupants infrastructural development like road and footpaths, and water supply.
Conference Presentations by Asfaw Mohamed
employment opportunities. It also helps as a substitute for another type of urban public transport. On the drivers’ side as they satisfy different parameters of the qualities of their life they have some compliant on traffic flow control system and tariff fixing mechanisms, and they are also dissatisfied with their own expense and saving behavior. On the passengers’ side, as they have higher satisfaction most of the public transport system measuring parameters, they have also some kind of
inconvenience on crime and theft control mechanisms, and safety and security.
the degree of built-up growth goodness. Methodologically, the study applied a multi-step geospatial and statistical modeling techniques, and it also employed the Shannon entropy index and the degree of freedom to measure the sprawling pattern and the degree of goodness of urban growth. Accordingly, the dynamic LULC change index identified the built-up area as the most dynamic land cover type and the intensity index depicted that a large part of the area was on the high-speed urban expansion level. Moreover, this study approved that the effects of the sprawling pattern have strong momentum to push the region’s built-up dynamics than the population increase and it also confirmed that a prevalence of high built-up sprawling and bad urban growth conditions. Therefore, the study lay emphasis on an integrated urban-regional planning and management approach and quantifying the built-up intensity, sprawling and the degree of urban growth goodness as a tool to control the LULC dynamics and enhancement of a rational decision on sustainable urban growth planning and management.
The survey data indicate that the majority (86.8 percent) of the respondents is from the low-income groups, and lion’s share (about 42.5 percent) of the surveyed households’ income increased after the resettlement. Moreover, the large number of the sampled houses is built up by traditional construction material like Chika wall and Earth floor, regarding the occupancy rate, the majority of them are adequately occupied. On the other hand, as almost all of the respondents have their own eclectic ammeter, and about 83 percent of them have own telephone, the largest proportion (94.3percent) of the respondents obtain water from the public tap (Bono) and stream and wells. As to the canonical correlation analysis, it shows that the household who occupied the larger area and somehow earn higher income tend to relatively have higher satisfaction with kitchen, open space or land as well as to have a higher number of rooms, whereas less satisfaction with toilet.
One of the important achievements of the major objectives of the project is providing access for the legal plot to the low-income households and controlled urban peripheral expansion. However, the Keranio UFD project totally failed in its components of promoting activities and providing some basic services that may create some form of peripheral deprivation.
Therefore, this project is not feasible to replicate for large scale urban development unless some kinds of amendments are made in its objectives and some of its components, and special consideration should be made on the plot size particularly 70 square meters occupants infrastructural development like road and footpaths, and water supply.
employment opportunities. It also helps as a substitute for another type of urban public transport. On the drivers’ side as they satisfy different parameters of the qualities of their life they have some compliant on traffic flow control system and tariff fixing mechanisms, and they are also dissatisfied with their own expense and saving behavior. On the passengers’ side, as they have higher satisfaction most of the public transport system measuring parameters, they have also some kind of
inconvenience on crime and theft control mechanisms, and safety and security.