干旱区生态环境知识资源中心(Arid): 基于RS与GIS的科尔沁沙地沙漠化时空演变

Arid

	基于RS与GIS的科尔沁沙地沙漠化时空演变
其他题名	Spatial-temporal Evolution of Aeolian Desertification in the Horqin Sandy Land Based on RS and GIS
	段翰晨; 王涛; 薛娴; 孙家欢; 杨林海
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2013
卷号	33 期号:2 页码:470-477
中文摘要	以2000年ETM+影像、2005年和2010年TM影像为数据源,在遥感(RS)与地理信息系统(GIS)技术的支持下,通过人机交互解译,对科尔沁沙地的沙漠化土地分布状况及其动态变化进行了分析研究。结果表明:①20002010年研究区沙漠化土地总体呈逆转的趋势,且从严重沙漠化土地向轻度沙漠化土地逐级逆转,沙漠化土地总面积从2000年的31 762.11km~2减少到2010年的30 198.87km~2,净减少量1 563.24km~2,减少速率为156.32km~2?a~(-1)。从沙漠化类型来看,除轻度沙漠化土地增加外,其他类型沙漠化土地面积均明显下降;②20002010年沙漠化土地持续逆转区域主要集中分布在治理强度较大的奈曼旗、库伦旗和扎鲁特旗;③严重沙漠化土地比较稳定,中度和轻度沙漠化土地重心空间迁移比较明显,20002010年中度沙漠化土地重心向西北方向移动23.65km,轻度沙漠化土地重心向南移动19.31km。
英文摘要	Using ETM+images in2000, TM images in2005 and 2010 as the data source, adopting the human-machine interactive interpretation method, we explored the distribution of aeolian desertified lands and their dynamic changes in the Horqin Sandy Land based on the technologies of remote sensing and geographic information system. Results showed that: (1) Aeolian desertified land in the Horqin Sandy Land represented reversion trend from extremely severe desertified land to slightly desertified land step by step during 2000-2010. The total area of aeolian desertified land decreased from 31 762. 11 km~2 in 2000 to 30 198. 87 km~2 in 2010. The net reduction was 1 563. 24 km~2, and the average reduction rate was 156. 32 km~2?a~ (-1). Viewed from the desertification types, all kinds of aeolian desertified land decreased obviously except the slightly desertified land. (2) The successive reversion regions of the aeolian desertified land were mainly distributed in Naiman Banner, Kulun Banner and Jarud Banner with great governance intensities. (3) The centroid of extremely severe aeolian desertified land was stable relatively. On the contrary, the centroids of moderately and slightly desertified lands moved obviously. The centroid of moderately desertified land migrated toward the northwest by 23. 65 km, and the slightly desertified land migrated toward the south by 19. 31 km.
中文关键词	科尔沁沙地 ; 沙漠化 ; 时空演变 ; 逆转 ; 重心迁移
英文关键词	Horqin Sandy Land aeolian desertification spatial-temporal evolution reversion centroid migration
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:4804630
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/2XILL650/230583
作者单位	中国科学院寒区旱区环境与工程研究所, 中国科学院沙漠与沙漠化重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	段翰晨,王涛,薛娴,等. 基于RS与GIS的科尔沁沙地沙漠化时空演变[J]. 中国科学院西北生态环境资源研究院,2013,33(2):470-477.
APA	段翰晨,王涛,薛娴,孙家欢,&杨林海.(2013).基于RS与GIS的科尔沁沙地沙漠化时空演变.中国沙漠,33(2),470-477.
MLA	段翰晨,et al."基于RS与GIS的科尔沁沙地沙漠化时空演变".中国沙漠 33.2(2013):470-477.