干旱区生态环境知识资源中心(Arid): 干旱区典型农业绿洲的景观变化与原因分析

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	干旱区典型农业绿洲的景观变化与原因分析
其他题名	Landscape changes of typical agricultural oasis in arid regions and its driving factors
	李华蕾 1; 肖笃宁 2; 王秋兵 1; 郭明 3; 马明国 4
来源期刊	生态学报
ISSN	1000-0933
出版年	2004
卷号	24 期号:9 页码:1878-1883
中文摘要	应用GIS和RS技术,运用FRAGSTATS格局分析软件,从景观破碎度、分维数和分离度等综合分析了河西走廊武威绿洲的景观格局十多年的变化情况.并通过建立景观类型转移矩阵和转换图,详细描述了各类型间的转化情况.武威绿洲各项格局指数的变化都可表明人类影响不断加大,发生变化最大的在绿洲边缘地带.从人类活动和水资源的变化找到绿洲景观变化的驱动因子,并提出了可持续利用的对策.
英文摘要	Wuwei oasis is a typical agricultural oasis in Gansu province, there are 10*104 hm2 farmland and 1 Million population. The oasis development keeps stability in long history. With human disturbance activities become more and more obvious in recently 20 years, Landscape spatial pattern change rapidly. Based on GIS and Remote Sensing, the paper analyzed landscape changes of Wuwei oasis from 1986 to 2000 and its driving force. The irrigated farmland increased 6295 hm~2, mainly changed from bare land and desert, and secondly from grassland and forest by transition matrix. The desert decreased 13530 hm2. The increasing part of town and rural resident is mainly from farmland. Changes often occurred in the edge of oasis, which reveals the ecological system is unstable. The main results of landscape analysis computed by FRAGSTATS. The increasing of fragment index of farmland is a result of many small patches increasing on the edge of oasis. The decreasing of isolation index and increasing of fragment index of desert is due to some of large patches divided into many small patches. The isolation index increasing and mean fractal dimension index decreasing show that the arbor forest was destroyed and lost its natural patch shape. The spatial distribution type of patches was judged by nearest index in settlement geography. Low-coverage grassland, desert, salt land, bare land and shrubbery belong to aggregate distribution type which often occurs with some certain resource. Low-coverage grassland often occurs in arid area such as the edge of desert s salt land occurs in some low-lying area. Farmland increasing is a result of increasing population. Meanwhile, some farmland occur desertification because runoff reduced, rate of ditch utility rose and exploitation of groundwater increased.
中文关键词	景观变化 ; 驱动因子 ; 可持续利用 ; 武威
英文关键词	landscape changes driving factors sustainable use Wuwei oasis
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ECOLOGY
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:1700016
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/205373
作者单位	1.沈阳农业大学, 沈阳, 辽宁 110161, 中国; 2.中国科学院寒区旱区环境与工程研究所, 兰州, 甘肃 730000, 中国; 3.山东师范大学, 济南, 山东 250014, 中国; 4.中国科学院沈阳应用生态研究所, 沈阳, 辽宁 110016, 中国
推荐引用方式 GB/T 7714	李华蕾,肖笃宁,王秋兵,等. 干旱区典型农业绿洲的景观变化与原因分析[J]. 中国科学院西北生态环境资源研究院,2004,24(9):1878-1883.
APA	李华蕾,肖笃宁,王秋兵,郭明,&马明国.(2004).干旱区典型农业绿洲的景观变化与原因分析.生态学报,24(9),1878-1883.
MLA	李华蕾,et al."干旱区典型农业绿洲的景观变化与原因分析".生态学报 24.9(2004):1878-1883.