scholarly journals A Novel Model for Detecting Urban Fringe and Its Expanding Patterns: An Application in Harbin City, China

Land ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 876
Author(s):  
Yuan Wang ◽  
Yilong Han ◽  
Lijie Pu ◽  
Bo Jiang ◽  
Shaofeng Yuan ◽  
...  

Urban fringe is an active expanding belt, indicating urban-rural interaction processes. Previous studies have attempted to define urban fringe as the transitional area between urban and rural areas, but there is a lack of quantitative analysis of the periphery boundaries. We developed a novel , the Spatial Segmentation Model (SSM), to detect the extent of urban fringe via calculating the share of the built-up land. Within the urban fringe, we statistically compared the number of built-up patches in each direction and described four urban expanding patterns (stable, sprawling, leaping, and mixing patterns) indicated by the empirical analysis. The results show that this model can reliably detect the urban fringe and could reveal urban growth characteristics. We find the spatial territory changes are highly relative with transport infrastructures in Harbin. Meanwhile, the roads density in the urban core are higher than in the urban fringe. Especially for city roads, roads density in the urban core is more than 4 times higher than in the urban fringe. The growth of the urban fringe is closely related to the development of social economies as well as the space policies and development plans designed by governments. Similar to the post-industry cities worldwide, Harbin should take action to address population decline. Effective land-use and suitable urban growth strategies play an important role in alleviating urban shrinkage. Thus, understanding the dynamics, urban expanding patterns, and driving factors in the urban fringe can help us form a basis for future urban development.

2019 ◽  
Vol 2 (1) ◽  
pp. 29-46 ◽  
Author(s):  
Nicolás A. Mari ◽  
Nicolás A. Mari ◽  
Beatriz Giobellina ◽  
Beatriz Giobellina ◽  
Alejandro Benitez ◽  
...  

In Córdoba, Argentina, the peri-urban horticulture is in conflict with industrial agriculture and urban development. This problem is partly due to urban expansion to rural areas occurred in the last years and to monoculture farming, which has replaced traditional fruit and vegetable cropping in the region. This transformation process has raised concern about the current and future availability of productive sectors that can sustain food supply within the city boundaries and its immediate surroundings as well as about the loss of ecosystem services associated with peri-urban natural environments. Although these dynamic processes are well known, they have not been described or quantified in Córdoba. Baseline information about land use and its dynamics in productive areas or about number of producers is insufficient and/or out of date. At O-AUPA (Spanish acronym for Observatory of Urban and Peri-urban Agriculture and Agroecology) different mapping strategies are developed to contribute to the understanding of the land dynamics in the Green Belt of Córdoba (GBC) and the rural environments surrounding the city. In this work, we present a method based on the use of remote sensing and geographical information systems to characterize urban, peri-urban and rural areas of Córdoba city with the aim of evaluating the temporal dynamics of urban growth and the current state of land use and cover. We mapped and quantified the urban growth between 1974 and 2014, and evaluated land use in peri-urban and rural areas in 2015. We used satellite information from Landsat TM 5 to map the urban growth via a principal component analysis (PCA) and SPOT 5 imagery to characterize the current land use and land cover with the support vector machine classification algorithm. The results show an urban area growth of 46.5% over almost 40 years within the boundaries of the Capital department. Farm plot size increased, showing a concentration of land ownership, implying a reduced number of producers. Evidence indicates the importance of defining land planning guidelines that limit the advance of the urban frontier to valuable agricultural systems, ensure diversification of productive activities and protect and develop the fresh food production systems at the local level.


Author(s):  
Xuefei Ren

This chapter discusses the consequences of the territorial and associational forms of the governing cities in China and India. It analyzes why China's and India's approach have not been able to deliver a just and equitable urban growth. It looks into the territorial forms of governance in China that have created not only a deep cleavage between urban and rural areas, but also unprecedented levels of disparity across cities and towns throughout the country. The chapter also looks into the associational politics of India that has produced inequalities and caused the exclusion of citizens from particular alliances and partnerships. It emphasizes how China and India should move forward by adopting a model that can empower municipal-level urban authorities in order to preserve space for democratic deliberation.


2021 ◽  
Vol 19 ◽  
Author(s):  
Narimah Samat ◽  
Mohd Amirul Mahamud ◽  
Mohammad Javad Maghsoodi Tilaki ◽  
Mohd Azmeer Abu Bakar ◽  
Leong Tan Mou ◽  
...  

Urban encroachment into the peri-urban areas has blurred the borders between urban and rural areas. Thus, the urban growth boundary (UGB) has been used to encourage the sustainable development of cities and improve long-term planning efficiency. Studying the understanding of the UGB concept in ensuring sustainable development in Malaysia would be beneficial. This study aimed to investigate the perception and understanding of the UGB concept and function to achieve sustainable urban development. An online survey was conducted involving 82 experts, which comprised planners from PLANMalaysia and academicians in the field of urban planning. Results indicated that the perception of the UGB score was significantly greater by 1.16 than the normal score of 3, which indicated that the experts agreed that UGB could improve the urban development. The findings also indicated that the existing planning policy and inclusion of UGB had protected agricultural and natural land; however, stricter and tighter borderless development should be conducted.


Author(s):  
Beniamino Murgante ◽  
Maria Danese

Until a few decades ago it was very easy to distinguish between city and country: in most cases the edge was defined by defensive barriers. In recent times, the relationships between urban and rural areas completely changed, placing the country in a subordinate position. Consequently, many terms have been coined in order to describe the new phenomena taking place between city and country. The term adopted, “periurban area”, despite its large use, does not have a clear and unambiguous definition. Such various approaches are due to the complexity of the phenomenon to be analyzed and to the huge variety of territorial contexts in which it may reveal. The phenomenon is characterized by urban growth with soil consumption generating loss of competitiveness for agricultural activities. This paper defines more precise rules in order to describe the periurban phenomenon, using techniques of spatial statistic and point pattern analysis. This approach has been tested in the case of study of Potenza municipality. Interest in this area comes after the earthquake of 1980, when a large migration of inhabitants began towards the countryside around Potenza.


Subject National populism in Europe. Significance A decade after the 2008-09 global financial crash, electoral trends have not reverted to pre-crash patterns while the appeal of national populism continues to rise. While economic insecurities explain some of the underlying support for populism, cultural insecurities offer a more comprehensive understanding of what unites populist voters and drives their politics. Impacts Reducing inequalities between urban and rural areas and investing in apprenticeships will be a priority for governments. Countries such as Italy and Hungary, where anti-immigration politics is strongest, will undergo sharper levels of population decline. Accusations of xenophobia will entrench some national populists' sense that their views are ignored. Some governments may decide to offer financial incentives for larger families to increase the 'national' population.


Author(s):  
N. P. Singh ◽  
Manisha Kaushik

Telecommunications has provided an excellent mean to connect people, businesses, communities and countries across the globe. Quality of life has improved tremendously with the development of communications and related technologies. In spite of excellent growth of telecommunications services and reduction in tariff the benefits of telecommunication technologies have not reached to the poor segment of the population in the emerging and developing countries. India is no exception to it. There is wide gap between teledensity in urban and rural areas in India. The research paper discusses the efforts of government and service providers to fill this gap. The paper also presents the analysis of growth strategies of telecom stake holders. Based on the analysis, it is suggested that the gaps can be filled in by understanding and addressing technical and financial issues of the service providers in the context of rural areas. There is a need to create better policy instruments to provide incentives for service providers in rural areas and create markets for service providers that are financially viable. In this context paper analyzed existing status of rural telecommunication, role of information & communication technologies (ICTs) in the life of rural population, future needs of rural population, and strategies of making telecommunication services affordable in rural areas.


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