干旱区生态环境知识资源中心(Arid): Characterizing urban expansion of Korla City and its spatial-temporal patterns using remote sensing and GIS methods

Arid

	Characterizing urban expansion of Korla City and its spatial-temporal patterns using remote sensing and GIS methods
	Maimaiti Bumairiyemu; Ding Jianli; Simayi Zibibula; Kasimu Alimujiang
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2017
卷号	9 期号:3 页码:458-470
英文摘要	Cities provide spatial contexts for populations and economic activities. Determining the spatial-temporal patterns of urban expansion is of particular significance for regional sustainable development. To achieve a better understanding of the spatial-temporal patterns of urban expansion of Korla City, we explore the urban expansion characteristics of Korla City over the period 19952015 by employing Landsat TM/ETM+ images of 1995, 2000, 2005,2010, and 2015. Urban land use types were classified using the supervised classification method in ENVI 4.5. Urban expansion indices, such as expansion area, expansion proportion, expansion speed, expansion intensity, compactness, and fractal dimension, were calculated. The spatial-temporal patterns and evolution process of the urban expansion (e.g., urban gravity center and its direction of movement) were then quantitatively analyzed. The results indicated that, over the past 25 years, the area and proportion of urban land increased substantially with an average annual growth rate of 15.18%. Farmland and unused land were lost greatly due to the urban expansion. This result might be attributable to the rapid population growth and the dramatic economic development in this area. The city extended to the southeast, and the urban gravity center shifted to the southeast as well by about 2118 m. The degree of urban compactness tended to decrease and the fractal dimension index tended to increase, indicating that the spatial pattern of Korla City was becoming loose, complex, and unstable. This study could provide a scientific reference for the studies on urban expansion of oasis cities in arid land.
英文关键词	urban expansion spatial-temporal changes urban land remote sensing and GIS Korla City
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Business & Economics
CSCD记录号	CSCD:5983413
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335803
作者单位	Maimaiti Bumairiyemu, College of Resource and Environment Sciences, Xinjiang University, Key Laboratory of Oasis Ecology of MOE, Urumqi, Xinjiang 830046, China.; Ding Jianli, College of Resource and Environment Sciences, Xinjiang University, Key Laboratory of Oasis Ecology of MOE, Urumqi, Xinjiang 830046, China.; Simayi Zibibula, College of Resource and Environment Sciences, Xinjiang University, Key Laboratory of Oasis Ecology of MOE, Urumqi, Xinjiang 830046, China.; Kasimu Alimujiang, School of Geographic Science and Tourism, Xinjiang Normal University, Urumqi, Xinjiang 830054, China.
推荐引用方式 GB/T 7714	Maimaiti Bumairiyemu,Ding Jianli,Simayi Zibibula,et al. Characterizing urban expansion of Korla City and its spatial-temporal patterns using remote sensing and GIS methods[J],2017,9(3):458-470.
APA	Maimaiti Bumairiyemu,Ding Jianli,Simayi Zibibula,&Kasimu Alimujiang.(2017).Characterizing urban expansion of Korla City and its spatial-temporal patterns using remote sensing and GIS methods.Journal of Arid Land,9(3),458-470.
MLA	Maimaiti Bumairiyemu,et al."Characterizing urban expansion of Korla City and its spatial-temporal patterns using remote sensing and GIS methods".Journal of Arid Land 9.3(2017):458-470.