干旱区生态环境知识资源中心(Arid): 基于RS和GIS长城沿线沙漠化动态研究

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	基于RS和GIS长城沿线沙漠化动态研究
其他题名	Study on Desertification Dynamics along the Great Wall by GIS And RS
	王晓峰 1; 任志远 2; 马智民 1
ISSN	1000-694X
出版年	2009
卷号	29 期号:4 页码:623-627
中文摘要	基于遥感影像,以长城沿线榆林地区为研究对象,在野外实地观测和验证的基础上利用RS和GIS平台对该地区沙漠化进行动态变化研究.结果表明:在1988-2002年沙漠化面积在逐步减少;按照沙漠化的类型分析,在1999年之前,逆转区的面积为1 221 682.0 hm~2,发展区的面积为1 285 603.0 hm~2,发展区的面积大于逆转区的面积;1999年之后,发展区的面积为680 374.6 hm~2,逆转区的面积为1 488 989.0 hm~2,逆转区的面积远大于发展区的面积;从沙漠化程度分析,轻度和潜在沙漠化的面积在大幅度地降低,但中度以上的沙漠化面积仍然在蠕动扩展,这一数据表明榆林地区沙漠化的形势仍然不容乐观,要居安思危.
英文摘要	The Yulin District, distributing along the Great Wall, is not only located in the agriculture-pasture transition zone, but also in the transition region between the desert and the loess plateau. There are many ecological environmental problems, anong with desertification is one of the nost serious. Based on the re-mote sensing images, DEM and the on-the-spot investigation data, the authors analyzed the desertification dynamics of this region by the technologies of GIS and RS. The results showed that before 1999 the deserti-fication area was reducing, the reversed desertified land was 1 221 682.0 hm~2 and the desertification develo-ping area was 1 285 603.0 hm~2; after 1999, the developing area was 680 374.6 hm~2 and the reversing area was 1 488 989.0 hm2, showing obvious reversing trend. But the reversed desertification area are mainly from light and potential desertification land types, the moderate and severe desertification are still in develo-ping status. So the desertification situation in the study region is hardly optimistic.
中文关键词	榆林地区 ; 沙漠化 ; 长城
英文关键词	Yulin distract of Shaanxi province desertification the Great Wall
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:3757952
来源机构	陕西师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224559
作者单位	1.长安大学资源学院, 西安, 陕西 710054, 中国; 2.陕西师范大学旅游与环境学院, 西安, 陕西 710062, 中国
推荐引用方式 GB/T 7714	王晓峰,任志远,马智民. 基于RS和GIS长城沿线沙漠化动态研究[J]. 陕西师范大学,2009,29(4):623-627.
APA	王晓峰,任志远,&马智民.(2009).基于RS和GIS长城沿线沙漠化动态研究.,29(4),623-627.
MLA	王晓峰,et al."基于RS和GIS长城沿线沙漠化动态研究".29.4(2009):623-627.