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[1]FENG Jian-min,ZHAO Min-ning,LI Xiao-hua.Spatiotemporal Variation of Urban Land-use Expansion in Xi’an City During the Last 30 Years[J].Research of Soil and Water Conservation,2013,20(04):183-188.

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Spatiotemporal Variation of Urban Land-use Expansion in Xi’an City During the Last 30 Years

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 20 Number of periods: 2013 04 Page number: 183-188 Column: Public date: 2013-08-28

Title:: Spatiotemporal Variation of Urban Land-use Expansion in Xi’an City During the Last 30 Years

Author(s):: FENG Jian-min, ZHAO Min-ning, LI Xiao-hua; College of Tourism and Resources & Environment, Xianyang Normal University, Xianyang, Shaanxi 712000, China

Keywords:: Xi’an City; expansion of urban land use; spatiotemporal variation

CLC:: F299.21

DOI:: -

Abstract:: In these days, rapid urbanization process has accelerated spatiotemporal variation of urban land-use expansion in China, which has been one of the important research fields in the land use/land cover change. Based on the landsat images of Xi’an accepted in 1977, 1988, 1998 and 2008, using RS thematic information extraction and GIS spatial overlay analysis, selected expansion speed, expansion intensity index, compactness, barycenter index, extending orientation and direction index as the main features, a study was conducted on the spatiotemporal variations of the urban land use in Xi’an City. The result shows that the built-up areas in Xi’an City over the last 30 years had increased 312.85 km², or 9.92 km² per year and the average expansion intensity is 1.14. Expansion of construction land presented a concentric-style with decreasing compactness, increasing instability and obvious extending direction of space differentiation, and city efficiency decreased gradually.

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