干旱区生态环境知识资源中心(Arid): 近50 a高台县绿洲时空变化研究

Arid

	近50 a高台县绿洲时空变化研究
其他题名	Spatiotemporal Change of the Oasis in Gaotai County in Recent 50 Years
	田文婷; 颉耀文; 陈云海
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2013
卷号	30 期号:6 页码:1122-1128
中文摘要	以近50 a的13期KeyHole、KATE-200、LandsatMSS/TM影像为数据源,提取高台县绿洲分布情况。计算绿洲单一动态度、双向动态度以及各乡镇绿洲相对变化率,并对高台绿洲13期矢量数据做叠置分析,确定高台绿洲在时间序列上的面积和空间变化情况。结果表明:近50 a高台县绿洲主要以扩张为主,其中绿洲扩张最迅速的时期是19901993年;双向动态度分析结果表明,绿洲非绿洲相互转化剧烈;稳定绿洲主要分布在黑河沿岸以及各乡镇居民区周围,变化绿洲分布在稳定绿洲外围,骆驼城乡、南华镇是绿洲扩张主要区域,绿洲频繁波动和退缩现象主要出现在罗城乡、新坝乡、黑泉乡一带。
英文摘要	Distribution of the oasis in Gaotai County,Gansu Province was extracted by taking the 13 images in recent 50 years as the data sources,including LandsatMSS /TM,KeyHole and KATE - 200. The single dynamic degree and bidirectional dynamic degree of the oasis were calculated,the relative change rates of the oasis in all the townships and towns in Gaotai County were estomated,and an overlay analysis on the vector data about distribution of the oasis in 13 periods were carried out to get the area and spatial change of the oasis in time sequence. The results showed that the oasis in Gaotai County was in expansion in recent 50 years,especially during the period from 1990 to 1993. The analyzed results of bidirectional dynamic degree revealed that the conversion between oasis and non-oasis was violent. The stable parts of the oasis were mainly distributed along the Heihe River and around the residential areas,the changeable parts of the oasis were distributed surrounding the oasis. The urban and rural areas of Luotuo Town and Nanhua Town were the main areas where the oasis was in expansion,and the frequent expansion and shrinkage of the oasis occurred mainly in Luocheng,Xinba,Heiquan townships.
中文关键词	绿洲化 ; 动态度 ; 相对变化率 ; 时空变化 ; 高台县 ; 张掖
英文关键词	oasis dynamic degree relative change rate spatiotemporal change Gaotai County Zhangye
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:4996953
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/2XILL650/229602
作者单位	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	田文婷,颉耀文,陈云海. 近50 a高台县绿洲时空变化研究[J]. 兰州大学,2013,30(6):1122-1128.
APA	田文婷,颉耀文,&陈云海.(2013).近50 a高台县绿洲时空变化研究.干旱区研究,30(6),1122-1128.
MLA	田文婷,et al."近50 a高台县绿洲时空变化研究".干旱区研究 30.6(2013):1122-1128.