CHAPTER FOUR 4. Results and Discussion 4.1 Change Detection Land-use/cover maps were produced for the year 1984, 1995, 2006, and 2016 (Fig 4.1). These maps show built-up area with purple color shows built-up area, the light yellow is agricultural area, the light red color is barren land/open space, the green color shows green areas and finally the water body is represented in blue color. The change in areal coverage for each category from 1984 to 2016 is clearly visible on the maps. At the beginning in 1984, Addis Ababa city occupied only small area at the center of the study area and surrounding Oromia towns were almost non-existent. The result also shows that there was no much change in years between 1984 and 1995 but the city began …show more content…
The map shows that the expansion of the city from 1984–2006 for about 20 years indicated in yellow and green colors is smaller than the expansion of the city from 2006 –2016 in the past 10 years. The expansion of built-up area in 2016 is very special in that it covered the study area wall to wall and increased by a large amount of land which indicates rapid and unprecedented urban growth of the city consuming the surrounding non-built-up areas. This type of urban growth is a typical urban sprawl increasing in all direction. Fig 4.1 Land-use types of Addis Ababa city and surrounding towns from 1984–2016. Fig 4.2 Overlaid built-up area of Addis Ababa city and surrounding towns from 1984–2016. In addition to representing the change in maps, the total area (ha) covered by each category and its percentage in the landscape was also calculated in FRAGSTATS to quantify the amount of change (Table 4.1). FRAGSTATS calculates the total area of each category as Class Area (CA) in hectares and the percentage as Percentage of Landscape (PLAND) for each year. These are the two major spatial metrics that measure spatial composition of a categorical map at landscape level. Table 4.1, Total amount of land in hectares for each category from 1984–2016. Land-use 1984 1995 2006 2016 Area % Area % Area % Area % Built-up A. 12,218
Urban sprawl is a concept that describes the spread of human populations from the major cities or urban areas into the low-density rural communities. Several factors are attributed to cause urban sprawl, such as lower land rates in rural areas, improved infrastructure, lack of effective urban planning, rise of population growth in the cities, and consumer preferences among others. Urban sprawl is considered to present significant benefits to individuals. For example, access of cheap land, better school systems in the suburbs, low crime rates and a sense of community. However, urban sprawl is considered undesirable due to factors like increasing the level of public expenditure in the development of infrastructure, increased health problems due to the spread of pollution, environmental degradation, and increased traffic in cities among others. This paper examines the concept of urban sprawl in the developing cities like the City of Edmonton, focusing on the policies that could be implemented to enhance population in the city and minimize the events of urban sprawl.
Recent data has shown that the world’s total population is doubling; however, the world's urban population is tripling. In the early 1800s, only 2 percent of the world’s population lived in urban areas (Urbanization; an environmental force to reckon with). This is a sharp contrast to what we have today. The promise of ample job opportunities, higher wages, and a better standard of living have been the main luring factors for attracting people into cities. Today about 50 percent of the world’s population lives in urban areas. It is estimated that by 2050 about 60-70 percent of the world’s population will be living in urban areas (Urbanization; an environmental force to reckon with). This growth trend of the urban populace is troubling since it has tremendous bad effects on our environment which in turn has bad effects on our health and well-being.
The physical-environmental geography of Sub-Saharan Africa relates to the distribution of human and economic activities in several ways. First, Sub-Saharan Africa is a peripheral that supplies raw materials, food, and cheap labor to the main industrial countries. The physical geography makes survival had for those not working in agriculture. It is the most productive way for people to make a living and feed their large families. In recent years, there has been major movement from rural-to-urban environments. Migration to major cities has caused extreme overcrowding and poor living conditions.
Urban development is the social, cultural, economic and physical development of cities. The development of cities is the main topic of human geography. Urban development can be used in different ways by the researchers. It can cause the price of things to increase fast. Urban development occurs in major cities like New York City, Tokyo, Japan. Urban development started back in the earlier cities like Mesopotamia, Egypt. This spreads the culture that affect people which makes them want to go to the major cities. Over fifty percent of the earth’s population lives in urban areas. Studies show by 2045 that the number of people living in a urban area will increase.
The city was becoming an inhumane place to live and today present different view. We are experiencing the emergence of a new urbanism that, unlike traditional planning does not seek the satisfaction only, of the maximum economic efficiency of a city, where the flow of capital, selling cars, real estate speculation and manufacturing productivity are above the minimum human needs. The "New Urbanism" offers a balanced city, where economic, social and environmental are in the same plane of importance, where humans and their physiological and psychological needs are the starting point of urban planning. The New Urbanism simply proposes a human city; we might well call, planning of the city for the Humans.
Cities in the United States have begun the process of de-urbanization, the transition from urban to suburban living. This has caused an increased demand for suburban housing, these houses take up more land expanding the city boundaries, this is the concept of urban sprawl. According to Britannica, Urban Sprawl is defined as “the rapid expansion of the geographic extent of cities and towns, often characterized by low-density residential housing, single-use zoning, and increased reliance on the private automobile for transportation” (“Urban Sprawl”). There are many effects of urban sprawl, both positive and negative; though the negative outweigh the positive in quantity, but not necessarily in importance. Whether or not urban sprawl is a good
Land Use involved a lot of planning and discussion to create the ideal land use to keep all members that are effected happy improving and conturing environmental systems. Land use deals with housing, transportation, open space, recreation, systems of water supply and sewage disposal. There are many resources
Asian cities have been tended to grow more quickly than Western cities, so what makes their growth so phenomenal? The accelerated rate may be attributed to population dynamics, economic markets and or/socio-political conditions, poor planning and disregarding environmental hazards like flood plains have held them back. Many primate cities in Asia have grown to become megacities, and some more are rapidly increasing in size to assume such a status by the end of the century. This is a remarkable phenomenon fraught with various implications, favorable or unfavorable. In 1960 there were only two megacities in the region, which were, Tokyo and Shanghai. In 1970 Beijing was added, and Asia had three of 10 megacities in the world, or two of five
Urbanization can be seen from various sociological perspectives such as the functional perspective and the conflict perspective. Functionalist’s view “on urbanizations generally focus on the ecology of the city”. On the other hand, the “conflict perspective tends to focus on political economy”. Human ecology “is a functionalist field of study that looks at on the relationship between people and their built and natural physical environments”. A specific model that displays this is the concentric zone model, it “views a city as a series of concentric circular areas, expanding outward from the center of the city, with various “zones” invading adjacent zones”. In opposition, the conflict perspective consists
Municipality give positive impact on family finances and open up opportunities for people to improve their productivity in work and education. Moreover, city areas has a complete basic amenities to meet current needs in terms of schooling, medical, banking and services and indirectly it increases the overall living standard of people. The high population in urban neighborhoods makes social relations in a very wide circle of society and gave an opportunity to the public to broaden communication and network, either professional or personal. While there are several benefits of living in an urban center, some challenges exist as well. It is true that people in urban center have a high chance in all aspects, especially the standard of living. Although there will undoubtedly be some negative consequences of this urbanization process including high rate of criminal and cities are ugly and produce people who are unaware about the
One of the primary missions of City A is to provide services to its constituents in the most cost-effective, legal, and ethical manner. Recent issues within the city manager’s office have eroded the public’s trust, in part due to a budget crisis that caused many vital employees to lose their jobs, thereby reducing city services. An atmosphere of tolerance for unethical and illegal behavior has been fostered within the office, leading to a dysfunctional governmental unit lacking an ethical framework from which to operate and void of leadership needed to guide the city employees. Implementing reforms in the city manager’s office is necessary in order to achieve change in the office that will promote ethical behavior and develop effective
Strong and sustained growth in Jakarta’s population and economy have resulted in a vast increase in the urbanised area, and associated land use change.
Malik Riaz Hussain was born 61 years ago in Sialkot to a lower-middle class family. He never completed his education. He started his first project of Bahria town in Lahore. The second was in Islamabad and now he is doing his project in Karachi. He is also doing social projects for the sake of society. These projects are Bahria Dastarkhawan, Hospital for deaf children and Bahria Colony for earthquake victims, helping hand for Edi, announcement of Fund for IDP’s, relief campus for flood victims and many more other projects. Recently in November 2014 he has announced to launch two universities for people of
In the passages it is said that vertical expansion is something needed to be added to the way urban area are constructed. So, the author uses facts, logical reasoning, and rhetorical devices to persuade an audience that vertical expansion of urban areas is a good idea.
Urban sprawl is the rapid expansion in urban areas and includes the migration of the population shifting from rural areas to urban. According to research from the David Suzuki foundation, 80% of the canadian population now lives in urban areas. There are many factors and causes that contribute to why this urbanization and rapid change is occurring. Many of the reasons include the desire to live in the city where there are better living conditions, more job and education opportunities. Also, the lack of planning a city more efficiently is one of the most common reasons for urban sprawl. The more the population grows, the more trouble it begins to have on the people and environment. Urban sprawl comes with many direct and indirect negative effects. The overpopulation of humans means the more use of vehicles, which causes issues like air and water pollution, which has severe effects on the environment and human health. The overconsumption of water is also very serious issue that is linked to the over population and growth in urban areas. The number of people living in an area affects how much water is being consumed and how much of that water is being used efficiently. Lastly, the use of more land due to the high demand of development, and that affecting the wildlife and nature.