نتایج جستجو برای: urban expansion

تعداد نتایج: 308549  

Journal: :ISPRS Int. J. Geo-Information 2017
Yongxiang Yao Jia Li Xingguo Zhang Ping Duan Shuang Li Quanli Xu

Change in urban construction land use is an important factor when studying urban expansion. Many scholars have combined cellular automata (CA) with data mining algorithms to perform relevant simulation studies. However, the parameters for rule extraction are difficult to determine and the rules are simplex, and together, these factors tend to introduce excessive fitting problems and low modelin...

2016
Lingfei. Ma Jonathan. Li

Urban expansion, particularly the movement of residential and commercial land use to sub-urban areas in metropolitan areas, has been considered as a significant signal of regional economic development. In 1970s, the economic centre of Canada moved from Montreal to Toronto. Since some previous research have been focused on the urbanization process in Greater Toronto Area (GTA), it is significant...

2014
Shasha Lu Xingliang Guan Chao He Jiali Zhang

Relatively little attention has been paid to examining the spatial expansion features of cities at various tiers at the regional level in China, especially those located in central and western regions of the country. Based on Landsat satellite imagery from four years—1980, 1990, 2000, and 2010, this paper investigates the spatio-temporal pattern of urban land expansion and its influencing facto...

2014
Jiadan Li Jinsong Deng Ke Wang Jun Li Tao Huang Yi Lin Haiyan Yu

This study presents a practical methodology to monitor the spatiotemporal characteristics of urban expansion in response to rapid urbanization at the provincial scale by integrating remote sensing, urban built-up area boundaries, spatial metrics and spatial regression. Sixty-seven cities were investigated to examine the differences of urbanization intensity, urbanization patterns and urban land...

Journal: :Rural policy brief 2013
Abigail R Barker Jessica K Londeree Timothy D McBride Leah M Kemper Keith Mueller

Key Findings. (1) A larger proportion of the rural population than the urban population is uninsured and low income (living at or below 138% of the federal poverty line [FPL]) (9.9% as compared to 8.5%) and a larger proportion of the rural population than the urban population will be eligible for subsidized Health Insurance Marketplace (HIM) coverage due to income levels and current lack of ins...

2014
Mingxing Chen Chao Ye

Rapid urbanization on the coast of China has attracted much attention. The objective of this study was to explore the differences in dynamics and related driving forces between urban and rural settlements. Applying the quantitative method, we demonstrate that substantial heterogeneity in settlement growth, landscape pattern metrics, change, land sources and driving forces is exhibited across th...

Journal: Desert 2012
Gh.R. Zehtabian H. Ahmadi M. Tahmoures M.H. Sadeghi Ravesh

Due to increasing importance of desertification challenges and its consequences the necessity of sustainabledevelopment achievement in arid and semi-arid regions is essential in order to avoid limited sources asting, increase the efficiency of controlling, reclamation and restoration projects of natural areas. Based on the iterature review, it has been recognized that combating desertification ...

2013
S. Mahmoudi M. R. Saradjian A. Esmaeily S. Vajedian

This study investigates urban expansion using satellite images by means of decision level fusion of two different fuzzy change detectors. The aim of this study is taking the advantage of effects of various change detection techniques. These techniques are differentiated by the way they use the dataset which their fusion could lead us to gain complementary outputs and ultimately achieve higher a...

2016

By consistent and clear urbanization process of the territory and the recent federal public policies aimed at the housing sector, the conjuncture formed by the advance of Brazil’s agricultural frontier has sometimes presented exaggerated urban expansion in major cities in the State of Tocantins. The city of Porto Nacional, in turn, is a notorious example of this phenomenon. This urban expansion...

2013
Zhang Jin

Urban sprawl has become a significant part of the regional socio-economic progress since the 20th century. The growing demand for urban land brings the issue that urban sprawl caused increasingly prominent. Studies in aboard on urban sprawl are comparatively earlier, mainly including the concept deconstruction in multi-angle, the shape and path of urban sprawl, and the measure of urban sprawl a...

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