scholarly journals Evaluation of Economic Linkage between Urban Built-Up Areas in a Mid-Sized City of Uyo (Nigeria)

Land ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 1094
Author(s):  
Etido Essien ◽  
Cyrus Samimi
Keyword(s):  
Urban Growth ◽  
Household Income ◽  
Urban Expansion ◽  
Growth Patterns ◽  
Southeastern Nigeria ◽  
Suburban Areas ◽  
Living Space ◽  
Social Amenities ◽  
The Impact

Urban growth has transformed many mid-sized cities into metropolitan areas. One of the effects of this growth is a change in urban growth patterns, which are directly linked with household income. Hence, this paper aims to assess the effect of different economic variables that trigger urban built-up patterns, using economic indicators such as city administrative taxes, a socio-economic survey of living standards, household income and satellite data. The regression model was used and adapted, and a case study is presented for the mid-sized city of Uyo in southeastern Nigeria. The result shows sparse built-up growth patterns with numerous adverse effects. Although, there is awareness of the impact of unregulated sparse built-up growth patterns in the literature, little attention has been given to this growth pattern in Africa. The results also show that increases in federal allocation (27%), investment tax (22%), direct tax (52%) and indirect tax (26%) have led to urban expansion into vegetative land and have a causal correlation with different built-up areas. Hence, medium and high-income earners migrate to suburban areas for bigger living space and a lack of basic social amenities affects the land value in suburban areas. They also assist in the provision of social amenities in the neighborhood.

Impact of Urban Growth on Market activities in Gombe Metropolis

2020 ◽  
Vol 4 (3) ◽  
Author(s):  
Ibrahim Faruk Gaya ◽  
Mu’azu Audu Zanuwa ◽  
Kamaludeen Adamu Muhammad ◽  
Mashkurah Ahmed Usman ◽  
Shehu Muhammad
Keyword(s):  
Urban Growth ◽  
Satellite Images ◽  
Urban Expansion ◽  
Secondary Data ◽  
New Markets ◽  
Fields Of Study ◽  
Questionnaire Administration ◽  
The World ◽  
The Impact ◽  
The Town

Urban growth concept has dragged the attention of several scholars of different fields of study for decades. Urban growth refers to expansion of urban centres in size due population growth, which hiked the number of buildings in urban centres around the world. The finding of the paper indicate that Gombe Metropolis expanded by (85 hectares) each year from 2000 to 2010 and the expansion of Gombe Metropolis occur in all direction. The rate at which Gombe Metropolis expand grown to (203 hectares) each year from 2010 up to date. Therefore, the rate at which Gombe metropolis expanded increases by 138% from 2010 to date and how number of markets increases to 16 currently from 12 in the year 2010. This paper study the Impact of urban growth on market in Gombe Metropolis. Coordinate of markets of existing markets was collected. For second set of data used in this paper i.e. secondary data which include map of Gombe metropolis, related journals, text books, published and unpublished document, and Newspaper were consulted. The data generated from questionnaire administration were analysed using tables, graphs and charts. Satellite images showing how urban growth is taken place in Gombe Metropolis were also analysed. The study examines the impact of urban growth on Gombe Metropolis markets activities over the period of study. The findings of the study indicate emergence of new markets in the study area over the years of study as a result of urban expansion that occur in Gombe Metropolis. It also indicated that the new established markets were located in areas where urban growth take place in study area and these new markets are patronized by people within the environment or vicinity of the markets. Most of the newly emerged markets are located at the periphery of the town where urban expansions occur rapidly.

scholarly journals Цифровізація розвитку міст: Urban Atlas на основі відкритих даних для міст України

2021 ◽  
pp. 19-28
Author(s):  
Андрій Юрійович Шелестов ◽  
Алла Миколаївна Лавренюк ◽  
Богдан Ялкапович Яйлимов ◽  
Ганна Олексіївна Яйлимова
Keyword(s):  
Land Use ◽  
Land Cover ◽  
Urban Growth ◽  
Urban Expansion ◽  
The European Union ◽  
Project Smart ◽  
Unified Algorithm ◽  
High Level ◽  
The Impact ◽  
The City

Ukraine is an associate member of the European Union and in the coming years it is expected that all data and services already used by EU countries will be available to Ukraine. The lack of quality national products for assessing the development and planning of urban growth makes it impossible to assess the impact of cities on the environment and human health. The first steps to create such products for the cities of Ukraine were initiated within the European project "SMart URBan Solutions for air quality, disasters and city growth" (SMURBS), in which specialists from the Space Research Institute of NAS of Ukraine and SSA of Ukraine received the first city atlas for the Kyiv city, which was similar to the European one. However, the resulting product had significantly fewer types of land use than the European one and therefore the question of improving the developed technology arose. The main purpose of the work is to analyze the existing technology of European service Urban Atlas creation and its improvement by developing a unified algorithm for building an urban atlas using all available open geospatial and satellite data for the cities of Ukraine. The development of such technology is based on our own technology for classifying satellite time series with a spatial resolution of 10 meters to build a land cover map, as well as an algorithm for unifying open geospatial data to urban atlases Copernicus. The technology of construction of the city atlas developed in work, based on the intellectual model of classification of a land cover, can be extended to other cities of Ukraine. In the future, the creation of such a product on the basis of data for different years will allow to assess changes in land use and make a forecast for further urban expansion. The proposed information technology for constructing the city atlas will be useful for assessing the dynamics of urban growth and closely related social and economic indicators of their development. Based on it, it is also possible to assess indicators of achieving the goals of sustainable development, such as 11.3.1 "The ratio of land consumption and population growth." The study shows that the city atlas obtained for the Kyiv city has a high level of quality and has comparable land use classes with European products. It indicates that such a product can be used in government decision-making services.

scholarly journals Assessing the Urban Eco-Environmental Quality by the Remote-Sensing Ecological Index: Application to Tianjin, North China

2021 ◽  
Vol 10 (7) ◽  
pp. 475
Author(s):  
Ting Zhang ◽  
Ruiqing Yang ◽  
Yibo Yang ◽  
Long Li ◽  
Longqian Chen
Keyword(s):  
Remote Sensing ◽  
Quality Assessment ◽  
Urban Expansion ◽  
Assessment Method ◽  
Landsat Images ◽  
Ecological Index ◽  
Environment Quality ◽  
Quality Assessment Method ◽  
The Impact

The remote-sensing ecological index (RSEI), which is built with greenness, moisture, dryness, and heat, has become increasingly recognized for its use in urban eco-environment quality assessment. To improve the reliability of such assessment, we propose a new RSEI-based urban eco-environment quality assessment method where the impact of RSEI indicators on the eco-environment quality and the seasonal change of RSEI are examined and considered. The northern Chinese municipal city of Tianjin was selected as a case study to test the proposed method. Landsat images acquired in spring, summer, autumn, and winter were obtained and processed for three different years (1992, 2005, and 2018) for a multitemporal analysis. Results from the case study show that both the contributions of RSEI indicators to eco-environment quality and RSEI values vary with the season and that such seasonal variability should be considered by normalizing indicator measures differently and using more representative remote-sensing images, respectively. The assessed eco-environment quality of Tianjin was, overall, improving owing to governmental environmental protection measures, but the damage caused by rapid urban expansion and sea reclamation in the Binhai New Area still needs to be noted. It is concluded that our proposed urban eco-environment quality assessment method is viable and can provide a reliable assessment result that helps gain a more accurate understanding of the evolution of the urban eco-environment quality over seasons and years.

scholarly journals Scenario Analysis on Climate Change Impacts of Urban Land Expansion under Different Urbanization Patterns: A Case Study of Wuhan Metropolitan

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Xinli Ke ◽  
Feng Wu ◽  
Caixue Ma
Keyword(s):  
Climate Change ◽  
Land Use ◽  
Urban Expansion ◽  
Regional Climate ◽  
Urban Land ◽  
Urban Land Use ◽  
Rapid Urbanization ◽  
Urban Land Expansion ◽  
The Impact

Urban land expansion plays an important role in climate change. It is significant to select a reasonable urban expansion pattern to mitigate the impact of urban land expansion on the regional climate in the rapid urbanization process. In this paper, taking Wuhan metropolitan as the case study area, and three urbanization patterns scenarios are designed to simulate spatial patterns of urban land expansion in the future using the Partitioned and Asynchronous Cellular Automata Model. Then, simulation results of land use are adjusted and inputted into WRF (Weather Research and Forecast) model to simulate regional climate change. The results show that: (1) warming effect is strongest under centralized urbanization while it is on the opposite under decentralized scenario; (2) the warming effect is stronger and wider in centralized urbanization scenario than in decentralized urbanization scenario; (3) the impact trends of urban land use expansion on precipitation are basically the same under different scenarios; (4) and spatial distribution of rainfall was more concentrated under centralized urbanization scenario, and there is a rainfall center of wider scope, greater intensity. Accordingly, it can be concluded that decentralized urbanization is a reasonable urbanization pattern to mitigate climate change in rapid urbanization period.

Modeling different urban growth patterns based on the evolution of urban form: A case study from Huangpi, Central China

2016 ◽  
Vol 66 ◽  
pp. 109-118 ◽  
Author(s):  
Yaolin Liu ◽  
Qingsong He ◽  
Ronghui Tan ◽  
Yanfang Liu ◽  
Chaohui Yin
Keyword(s):  
Urban Growth ◽  
Urban Form ◽  
Growth Patterns ◽  
Central China

scholarly journals Assessing Sustainable Urban Development Trends in a Dynamic Tourist Coastal Area Using 3D Spatial Indicators

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 5044
Author(s):  
Teresa Santos ◽  
Raquel Deus ◽  
Jorge Rocha ◽  
José António Tenedório
Keyword(s):  
Sustainable Development ◽  
Urban Development ◽  
Urban Growth ◽  
Coastal Area ◽  
Smart Cities ◽  
Growth Patterns ◽  
Local Economy ◽  
Sustainable Urban Development ◽  
2D And 3D ◽  
The Impact

In coastal areas, the tourism sector contributes to the local economy, generating income, employment, investments and tax revenues but the rapid urban expansion creates great pressure on local resources and infrastructures, with negative repercussions on the residents’ quality of life, but also compromising the visitor’s experience. These areas face problems such as the formation of meteorological effects known as heat islands, due to the soil sealing, and increased energy demand in the peak season. To evaluate the impact of urban growth spatial pattern and change, three strategic sustainable challenges—urban form, urban energy, and urban outdoor comfort—were selected. The progress towards sustainability was measured and analyzed in a tourist city in the Algarve region, Portugal, for the period 2007–2018, using geographic information. A set of 2D and 3D indicators was derived for the building and block scales. Then, a change assessment based on cluster analysis was performed, and three different trends of sustainable development were identified and mapped. Results allow detecting the urban growth patterns that lead to more sustainable urban areas. The study revealed that a high sustainable development was observed in 12% of the changed blocks in the study area. All indicators suggest that the growth pattern of the coastal area is in line with the studied sustainability dimensions. However, most of the blocks that changed between 2007 and 2018 (82%) followed a low sustainable development. These blocks had the lowest variation in the built volume and density, and consequently the lowest variations in the roof areas with good solar exposition. The urban development also privileged more detached and less compact buildings. This analysis will support the integration of 2D and 3D information into the planning process, assisting smart cities to comply with the sustainable development goals.

scholarly journals URBANISATION BEYOND ITS CORE BOUNDARY AND ITS IMPACT ON THE COMMUNITIES IN GEORGE TOWN CONURBATION, MALAYSIA

2019 ◽  
Vol 17 (10) ◽  
Author(s):  
Narimah Samat ◽  
Mohd Amirul Mahamud ◽  
Siti Masayu Rosliah Abdul Rashid ◽  
Yasin Elhadary ◽  
Norzailawati Mohd Noor
Keyword(s):  
Urban Development ◽  
Urban Growth ◽  
Urban Expansion ◽  
Economic Benefits ◽  
Inclusive Development ◽  
Spatial Expansion ◽  
Qualitative Approaches ◽  
Core Boundary ◽  
George Town ◽  
The Impact

Rapid urbanisation has raised major issues, especially in cities in developing nations. In Malaysia, for example, the urbanisation rate is at 74%, but the size of urban land is less than 10%. This phenomenon has caused urban expansion to encroach on to its fringe areas. At present, although much has been said about the economic benefits of urban expansion to the fringe areas, yet little is known about its impact on the local communities. This paper aims to highlight the spatial expansion of George Town Conurbation and to investigate how local inhabitants perceive urban development. This study used satellite images and GIS techniques to identify the spatial expansion of urbanisation in George Town. Quantitative and qualitative approaches of data collection were employed to investigate the impact of urbanisation on the communities. The findings indicated that the inhabitants in less urbanized states welcome urban expansion, as they perceive that urban growth generates more jobs and brings economic opportunities. On the contrary, those who have experienced a longer period of urban development did not fully welcome urbanisation. Therefore, inclusive development policies are required to ensure that urban growth will benefit dwellers in the urban area as well as in its surroundings. In addition, they are required to safeguard the environment.

scholarly journals MODELLING URBAN GROWTH FOR BANGKOK AND ASSESSING LINKAGES WITH ROAD DENSITY AND SOCIO-ECONOMIC INDICATORS

2019 ◽  
Vol XLII-4/W19 ◽  
pp. 255-262
Author(s):  
S. A. Kamarajugedda ◽  
E. Y. M. Lo
Keyword(s):  
Urban Growth ◽  
Urban Areas ◽  
Turning Point ◽  
Urban Expansion ◽  
Growth Patterns ◽  
Economic Indicators ◽  
Sustainable Urban Development ◽  
City Development ◽  
Road Density ◽  
The Future

Abstract. The fastest urbanization is occurring in the Global South which includes many developing nations in Asia. However, a rapid and unplanned urban growth could threaten the sustainability of the process. A key step towards a sustainable urban development is to better understand interdependencies amongst urban growth patterns, infrastructure and socio-economic indicators. Here we chose Bangkok, Thailand as a megacity case study to assess the spatio-temporal urban growth dynamics and specifically its dependency with road density at intra-city scales. The SLEUTH urban growth model is further applied for predicting future expansion over the next decade and to assess the future intra-city expansion. Urban expansion patterns for Bangkok were generated for 1987 and 2017 using Landsat derived urban land-cover maps. Open Street Map (OSM) is used to generate a 2017 road density map. The urban expansion (1987–2017) was observed to follow a radially outward expanding pattern inland, with the logarithmic urban expansion rate having an inverted concave trend with road density. The rising/falling limbs then indicated an increase/decrease of urban expansion for which a road density “turning point” is readily identified and further used to develop a road density-based zoning map that highlights the different intra-city urban expansion rates. The SLEUTH predicted urban growth till year 2027 which also showed expansion outward from existing urban areas. The future expansion trend is also consistent with the turning point trend. This study showed that such spatial-temporal analysis of urban expansion coupled with SLEUTH can be useful for investigating likely outcomes of city development plans.

Analysis of Urban Expansion on Agricultural Food Production in Calabar, Nigeria

2021 ◽  
Vol 2 (4) ◽  
pp. 54-62
Author(s):  
M. A. Oyinloye ◽  
U. M. Ogban ◽  
O. S. Aboyeji
Keyword(s):  
Urban Growth ◽  
Food Production ◽  
Agricultural Land ◽  
Urban Expansion ◽  
Sampling Technique ◽  
Bare Soil ◽  
Landsat Images ◽  
Gis Software ◽  
The Impact ◽  
Agricultural Food

Urban growth appears to have direct effects on the available agricultural land in and around urban area which in turn affects food production and other agricultural activities in the city. Indiscriminate urban growth and increasing losses of agricultural lands have become an issue in developing countries. The aim of this study is to use Remote Sensing and GIS to monitor the impact of urban expansion on agricultural food production in Calabar, Nigeria. Landsat images of 1986, 2003 and 2018 of Calabar municipal and Calabar South were obtained. The study employed supervised digital image classification method using ILWIS 3.2 and ArcGIS 10.2a software. GIS software was used to classify the landuse into built-up area, natural vegetation, bare soil, agricultural land and water bodies. Also, a set of structured questionnaire were administered using the stratified random sampling technique to elicit information on the socio economic and driven factors responsible for conversion of agricultural landuse, effect of urban expansion on agricultural food production and measures adopted to preserve agricultural land uses. The results revealed increase in urban expansion on food production over the periods (1986–2018). Recommendations were provided that will reduce the rate of urban expansion on agricultural food production in the study area.

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