干旱区生态环境知识资源中心(Arid): 嘉峪关市城市化进程及景观格局动态变化

Arid

	嘉峪关市城市化进程及景观格局动态变化
其他题名	Urbanization process and landscape change of Jiayuguan City,Gansu Province of Northwest China.
	谢余初 1; 巩杰 1; 赵彩霞 1; 颉耀文 2; 林兴周 2
来源期刊	生态学杂志
ISSN	1000-4890
出版年	2012
卷号	31 期号:4 页码:1009-1015
中文摘要	绿洲城市是中国干旱区人类活动最集中、人地关系最为敏感和复杂的代表性区域。本文以快速城市化绿洲城市嘉峪关市为例，基于RS和GIS技术等从人口、经济、城市空间布局3个方面来分析嘉峪关市城市化水平，同时从斑块特征指数、景观多样性指数和景观空间构型指数等对绿洲城市景观格局进行定量分析。结果表明:19782009年间嘉峪关市城市化过程明显，城市人口比重从1978年的69.9%升至2009年的90.3%，城市建设用地年均扩张指数高达5.6%;嘉峪关市景观格局变化显著，景观多样性和异质性增强，耕地、林地和建设用地破碎度增加，草地和水域呈波动状态，未利用地破碎度减少;各斑块受干扰的程度增大，斑块几何形状更趋向规律性，基质成分减少;嘉峪关市城市化过程强烈影响着城市景观格局及其变化，人类活动对城市生态环境的影响作用逐渐增加。
英文摘要	Oasis city is the most sensitive and complicated area in arid regions of China,due to the fragile environmental system and intensive human activities.Based on the 1978-2009 remote sensing images and social statistical data,this paper analyzed the urbanization process and landscape change of Jiayuguan,a typical desert oasis city,aimed to reveal the effects of urbanization on the landscape pattern change of oasis city.In 1978-2009,Jiayuguan City had an evident urbanization process.The proportion of urban population was increased from 69.9% in 1978 to 90.3% in 2009,and the mean annual expansion index of urban area was up to 5.6%.In the meantime,the urban landscape pattern had an obvious change.The landscape diversity and heterogeneity increased,presenting in the increased fragmentation of arable land,forest land,and construction land,fluctuated grassland and water area,and decreased fragmentation of unused land,and the landscape patches were increasingly disturbed,their shapes becoming more regular,and matrix components being reduced.The urbanization process in Jiayuguan City strongly affected the urban landscape pattern and its change,and the impacts of human activities on the urban ecological environment had a gradual increase.
中文关键词	干旱区 ; 城市化 ; 景观格局变化 ; 绿洲城市 ; 嘉峪关
英文关键词	arid area urbanization landscape pattern change oasis city Jiayuguan.
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURAL ECONOMICS POLICY
WOS研究方向	Agriculture
CSCD记录号	CSCD:4512645
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228497
作者单位	1.兰州大学, 西部环境教育部重点实验室, 兰州, 甘肃 730000, 中国; 2.兰州大学资源环境学院, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	谢余初,巩杰,赵彩霞,等. 嘉峪关市城市化进程及景观格局动态变化[J]. 兰州大学,2012,31(4):1009-1015.
APA	谢余初,巩杰,赵彩霞,颉耀文,&林兴周.(2012).嘉峪关市城市化进程及景观格局动态变化.生态学杂志,31(4),1009-1015.
MLA	谢余初,et al."嘉峪关市城市化进程及景观格局动态变化".生态学杂志 31.4(2012):1009-1015.