نتایج جستجو برای: urban expansion model

تعداد نتایج: 2360983  

Journal: :international journal of environmental research 2014
t. ceccarelli s. bajocco l. luigi perini l. luca salvati

urban expansion and agriculture intensification are relevant drivers in land degradation (ld)processes in europe due to net loss of land, soil sealing, landscape fragmentation and other negative effects on the environment. this paper explores changes (or “trajectories” of change) in land use and cover (lulc) and their relationship with the consumption of soils in emilia-romagna (northern italy)...

Journal: :تحقیقات جغرافیایی 0
محمدرضا پورمحمدی محمد جام کسری

â  regional and urban planning instruments contain an extensive range of concepts and methods. these methods are important for understanding the complex identity of cities and the prediction of their future. today majority of planners and urban planning authorities believe that the use of these methods can help us to better understand urban systems and predict their behavior. in this regard the...

2017
Ye Zhou Feng Zhang Zhenhong Du Xinyue Ye Renyi Liu

Sustainable urban development is a focus of regional policy makers; therefore, how to measure and understand urban growth is an important research topic. This paper quantified the amount of urban growth on land use maps that were derived from multi-temporal Landsat images of Jiaxing City as a rapidly-growing city in Zhejiang Province from 2000–2015. Furthermore, a new approach coupled the heuri...

2014
Jingxia ZHANG Hongmei ZHOU

Urban expansion is a complex spatial transformation process over time. It converts various land-use types into urban lands, therefore gradually increase the size of urban areas. The research in simulation and prediction of urban expansion can provide us with two benefits: one, we would be able to grasp the pattern of the complex process of a city's expansion; and the other, we may be able to fo...

Journal: :Journal of Applied Remote Sensing 2012

Journal: :CoRR 2014
Ying Long Kang Wu Qizhi Mao

Large-scale models are generally associated with big modelling units in space, like counties or super grids (several to dozens km). Few applied urban models can pursue largescale extent with fine-level units simultaneously due to data availability and computation load. The framework of automatic identification and characterization parcels developed by Long and Liu (2013) makes such an ideal mod...

Journal: :جغرافیا و توسعه فضای شهری 0
براتعلی خاکپور محسن رستگار رضا ویسی راضیه السادات میرجعفری سجاد احمدی

extended abstract 1. introduction after industrial revolution, complex economic and technical developments led to wide changes in the size of cities, the proportion of the population in urban areas, and the growth rate of urbanization (johnson, 1998). more than half of the world population currently lives in urban areas and the uncontrolled expansion of cities is becoming a global concern. it i...

Journal: :desert 0
m.h. sadeghi ravesh assistant professor, faculty of agriculture, islamic azad university, takestan branch, takestan, iran h. ahmadi professor, islamic azad university, science and research branch, tehran, iran gh.r. zehtabian professor, faculty of natural resources, university of tehran, karaj, iran m. tahmoures phd. student, faculty of natural resources, university of tehran, karaj, iran

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 ...

2015
Daniel Argüeso Jason P. Evans Andrew J. Pitman Alejandro Di Luca

We examine the joint contribution of urban expansion and climate change on heat stress over the Sydney region. A Regional Climate Model was used to downscale present (1990-2009) and future (2040-2059) simulations from a Global Climate Model. The effects of urban surfaces on local temperature and vapor pressure were included. The role of urban expansion in modulating the climate change signal at...

2017
Ying Long Kang Wu

Large-scale models are generally associated with large spatial modelling units, for example, counties or super grids (several to dozens of km2). Few applied urban models can achieve a large spatial coverage with irregular spatial units due to data availability and computation load. The framework of automatic identification and characterization of blocks developed by Liu and Long (2016) makes su...

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