干旱区生态环境知识资源中心(Arid): 敦煌绿洲近30年的景观变化研究

Arid

	敦煌绿洲近30年的景观变化研究
其他题名	Landscape changes in Dunhuang oasis for recent 30 years
	张秀霞 1; 颉耀文 2; 吕利利 2
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2018
卷号	32 期号:3 页码:170-175
中文摘要	以敦煌绿洲为例,基于4期Landsat遥感数据,采用监督分类及目视解译修正方法对研究区进行地物分类,利用数理统计模型等开展绿洲变化过程,采用邻域分析方法剖析绿洲细部变化特征。结果表明: 1986- 2015年间敦煌绿洲的变化主要以人工绿洲扩张为主,总绿洲面积增加了40.71%。以10年为间隔统计,研究区80%以上的人工绿洲扩张发生在其1km邻域范围内,且人工绿洲扩张具有方向性,主要向北、东北、东和西南方向扩张。1995年之前,人工绿洲面积的增加主要是由于天然绿洲和过渡带转化造成的,而1995之后,由荒漠转为人工绿洲的面积逐渐增加。
英文摘要	Taking Dunhuang oasis as an example,the landscape of the study area were classified by the method of supervised classification based on the four Landsat images,and the results were corrected by visual interpretation. The changes of oasis were studied by using mathematical statistics,and the characteristics of the oasis were analyzed by using the neighborhood analysis method. The results showed that the changes of oasis were mainly manifested as the expansion of artificial oasis in 1986 - 2015,and the area of oasis was increased by 40.71%. More than 80% of the oasis expansion in the study area occurred within its 1 km neighborhood with a 10 - year statistical interval. The expansion of artificial oasis showed a certain direction,mainly along the north,northeast, north and southwest. The expansion of artificial oasis before 1995 was mainly the transformation of natural oases and ecotone,and the area transformed by desert gradually increased after 1995.
中文关键词	遥感 ; 景观分析 ; 时空变化 ; 绿洲
英文关键词	remote sensing landscape analysis spatio - temporal change Oasis
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:6211965
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/2XILL650/237700
作者单位	1.兰州大学资源环境学院;;兰州理工大学土木工程学院, ;;, 兰州;;兰州, ;; 730000;;730050; 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	张秀霞,颉耀文,吕利利. 敦煌绿洲近30年的景观变化研究[J]. 兰州大学,2018,32(3):170-175.
APA	张秀霞,颉耀文,&吕利利.(2018).敦煌绿洲近30年的景观变化研究.干旱区资源与环境,32(3),170-175.
MLA	张秀霞,et al."敦煌绿洲近30年的景观变化研究".干旱区资源与环境 32.3(2018):170-175.