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Spatial Changes in Wetland Configuration of Akure South Local Government Area of Ondo State, Nigeria
Omodehin Adenike Oluwakemisoye,
Basorun Joseph Omoniyi,
Oyinloye Michael Ajide
Issue:
Volume 6, Issue 3, September 2021
Pages:
76-81
Received:
22 June 2021
Accepted:
20 July 2021
Published:
29 July 2021
DOI:
10.11648/j.urp.20210603.11
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Abstract: Wetlands are not wastelands as believed in time past but areas of land that play important roles in climate change mitigation through conservation and preservation; poverty alleviation through job creation; as well as food security through sustainable wetland agriculture. The importance of wetlands cannot be overemphasized, hence the need to use them wisely and sustainably. However, despite the important roles played by wetlands, wetland resources are still endangered by increase in population, rapid urbanization, mining and pollution among others. This study is aimed at examining the spatial changes in wetland configuration in Akure with a view to providing information that will enhance sustainable development of wetlands in the city. Remote Sensing and Geographic Information System (RS & GIS) techniques was used to do a land use classification of the study area to determine the extent of the change in the spatial configuration of wetlands over a period of 33 years using 1986 as the base year; 1999, 2009 and 2019 as the cardinal years. The study revealed a rapid increase in built up throughout the study period, a decline in vegetation and rock outcrop and both increase and decline of wetlands at varying times. During the 2009-2019 periods, wetlands increased substantially to 106.16 km2 which is a significant portion of the study area but with clear indications of possible encroachment and degradation in the future if developments are not controlled. The study therefore recommends proper monitoring and control of developments in the study area and suggests the use of wetland zones as green belts in form of wetlands vegetation or agriculture.
Abstract: Wetlands are not wastelands as believed in time past but areas of land that play important roles in climate change mitigation through conservation and preservation; poverty alleviation through job creation; as well as food security through sustainable wetland agriculture. The importance of wetlands cannot be overemphasized, hence the need to use th...
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Urban Agriculture in Arusha City, Tanzania: Misconceptions and Realities
Pastory Salvatory Thomas,
Wilbard Jackson Kombe,
Aldo Lupala
Issue:
Volume 6, Issue 3, September 2021
Pages:
82-89
Received:
21 July 2021
Accepted:
2 August 2021
Published:
11 August 2021
DOI:
10.11648/j.urp.20210603.12
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Abstract: Like many cities in Sub-Saharan Africa, urban agriculture in Arusha city is perceived differently by urban land decision makers, agricultural and environmental officers as well as urban farmers. The way urban agriculture is perceived changes depending on urbanization rate and institutional framework of cities’ authorities. Despite that situation, information on how positive perception can lead to the prosperity of urban agriculture or its negative perception can hinder its prosperity is still implicit. Thus, this study was conducted to examine the perception held by urban farmers and officials in Arusha city and the way such perceptions affect urban agricultural activities. The study adopted a qualitative research approach in order to gain the in-depth respondents’ opinions and perceptual information about urban agriculture. The case study strategy was deployed by this study because the perceptional thoughts held by respondents on urban agriculture depend on the actual situation through which agricultural activities took place. A total of 60 respondents were exhaustively interviewed. Other information was obtained through observation as well as reviewing literature. All data obtained were analyzed and interpreted based on their content. The findings revealed that some of the negative effects caused by urban agricultural activities influenced the negative perception people held on it. Those effects were seldom managed by officials from Arusha city authorities. However, some of those effects to the environment and urban development were evident, they were sometimes exaggerated due to the negative perception already existing in the city officials’ minds. The positive perception of urban agriculture existed only when its associated benefits met the interests of the urban farmers and city officials. The study concludes that, the positive or negative perceptions of urban agriculture has close a relationship with the livelihoods of the farmers and the employment needs of officials such as urban planners, environmental officers and agricultural officers. Despite urban agriculture being somehow acknowledged in the policy documents, the effects of negative perceptions among different stakeholders about urban agriculture are considered less crucial in the policy implication and other formal governmental proclamation. However, in the reality it is critical.
Abstract: Like many cities in Sub-Saharan Africa, urban agriculture in Arusha city is perceived differently by urban land decision makers, agricultural and environmental officers as well as urban farmers. The way urban agriculture is perceived changes depending on urbanization rate and institutional framework of cities’ authorities. Despite that situation, i...
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Evaluation and Optimization for Joint Disaster Response of Public Space and Public Service Facilities in Metropolises: Taking Chongqing City as an Example
Yuan Xinyi,
Han Ying,
Xu Hanjing,
Hong Yang
Issue:
Volume 6, Issue 3, September 2021
Pages:
90-100
Received:
24 August 2021
Accepted:
16 September 2021
Published:
23 September 2021
DOI:
10.11648/j.urp.20210603.13
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Abstract: The outbreak of Covid-19 pandemic has had a dramatic impact on the order of cities around the world. Among them, metropolises are more vulnerable to such public health incidents due to dense urban environments and complex human activities. It is crucial to improve disaster prevention capabilities of metropolises. In metropolitan areas with limited land resources, the cost of building dedicated disaster prevention facilities is high. Therefore, when a significant disaster strikes, urban public space and public service facilities are often converted into temporary emergency rescue places to assist the urban disaster prevention system, which is an essential line of defense to ensure urban safety. However, urban public space and public service facilities have their own resource shortcomings in emergency rescue, and if they can cooperate to respond to disasters by sharing resources, they can further improve their emergency response capacity during disasters. This paper took the main downtown districts of Chongqing as the research object, based on the POI data and ArcGIS, evaluated the coordination of spatial layout and the level of spatial connection between public space and public service facilities, analyzed the difficulties and causes of Joint Disaster Response of the two, and finally proposed optimization suggestions in order to provide new ideas for disaster prevention and mitigation in the post-Covid-19 era in Metropolises.
Abstract: The outbreak of Covid-19 pandemic has had a dramatic impact on the order of cities around the world. Among them, metropolises are more vulnerable to such public health incidents due to dense urban environments and complex human activities. It is crucial to improve disaster prevention capabilities of metropolises. In metropolitan areas with limited ...
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