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	Environmental effects of urban expansion in medium-sized cities of China: A case study in Mianyang city
	Zhao T. ; Liu J. Y. ; Zhuang D. F. ; Deng X. Z. ; Chen S. Q.
	2004
会议名称	Proceedings of the Society of Photo-Optical Instrumentation Engineers (Spie)
关键词	urban expansion determinant finding environmental effect Mianyang delta
页码	346-355
英文摘要	Urban expansion continues to accelerate and herewith changes profoundly the Earth surface and results in many environmental consequences, such as affecting ecological sustainability in the rapid urbanized area of China. Therefore, it is of significance to map the intensity and spatial pattern of urban expansion and assess its environmental effects. The objectives of this paper are three-folds: (1) using two-period Landsat TM/ETM images from 1988 to 2000, urban expansion in Mianyang prefecture of China was mapped out. Results showed that urbanization in Mianyang increased dramatically with an expansion rate of 76.8%. Most of the new urban development was done at the cost of arable land. (2) The study found determinants of urban expansion, and concluded that urban expansion was constrained by biophysical as well as social-economic factors. The change of industrial structure in downtown area and the improvement of transportation were predominant drivers for urban expansion. (3) Combining with statistical environmental-data, the paper analyzed environmental effects of urban expansion in Mianyang, such as urban heat island effect (UHI), water pollution and acid rain.
收录类别	CPCI
会议录出版者	Spie-Int Soc Optical Engineering
语种	英语
ISSN号	0277-786X
ISBN号	0-8194-5482-6
内容类型	会议论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/25415]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Zhao T.,Liu J. Y.,Zhuang D. F.,et al. Environmental effects of urban expansion in medium-sized cities of China: A case study in Mianyang city[C]. 见:Proceedings of the Society of Photo-Optical Instrumentation Engineers (Spie).

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