干旱区生态环境知识资源中心(Arid): 21世纪初科尔沁沙地沙漠化程度变化动态监测

Arid

	21世纪初科尔沁沙地沙漠化程度变化动态监测
其他题名	Remote Sensing Monitoring on Dynamic of Sandy Desertification Degree in Horqin Sandy Land at the Beginning of 21st Century
	李爱敏; 韩致文; 黄翠华; 谭振华
ISSN	1000-694X
出版年	2007
卷号	27 期号:4 页码:546-551
中文摘要	基于RS与GIS技术,以2000年TM影像和2005年ETM影像为信息源,划分土地利用类型并建立目视解译标志,利用ERDAS的图像和数据处理功能,对科尔沁沙地2000年以来沙漠化程度的动态变化进行了监测.结果表明,监测期内轻度沙漠化土地面积增加635.8 km~2,具有明显增加的趋势.中度、重度和严重沙漠化土地面积均减少,减少面积分别为195.0 km~2、313.8 km~2和145.6 km~2.对于各类沙漠化土地而言,轻度沙漠化土地面积均增加,严重和重度沙漠化土地面积均减少,中度沙漠化土地在沙丘活化或流沙入侵沙漠化土地中增加,其他两类中均减少.沙漠化土地逆转过程中,轻度和重度沙漠化土地逆转较为明显;新增沙漠化土地中,中度和重度沙漠化土地所占比例较大.
英文摘要	Land use types were classified and the visual interpretation remarks were established by taking TM images in 2000 and ETM images in 2005 as information source. Then the dynamic of sand desertification degree in Horqin sandy land since 2000 was monitored with the help of images and data processing function of ERDAS. During the remote sensing monitoring period, the slight desertification land has obvious increasing trend, the area had been increased by 635. 8 km~2. The moderate, severe and serious desertification lands developed in the direction of reducing, their area had been reduced by 195.0 km~2, 313.8 km~2 and 145. 6 km~2 respectively. For each type of desertification land, the area of slight desertification land increased, that of severe and serious desertification lands reduced; the area of moderate desertification land increased in the type of sand reactivating or moving sand invading, and decreased in the types of bush desertification and farmland desertification. The reversed desertification lands mainly came from the slight and the severe types; the newly increased desertification land mainly happened in the moderate and severe desertification lands.
中文关键词	科尔沁沙地 ; 沙漠化 ; 动态变化
英文关键词	Horqin sandy land sandy desertification dynamic
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:2833303
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/2XILL650/221824
作者单位	中国科学院寒区旱区环境与工程研究所, 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	李爱敏,韩致文,黄翠华,等. 21世纪初科尔沁沙地沙漠化程度变化动态监测[J]. 中国科学院西北生态环境资源研究院,2007,27(4):546-551.
APA	李爱敏,韩致文,黄翠华,&谭振华.(2007).21世纪初科尔沁沙地沙漠化程度变化动态监测.,27(4),546-551.
MLA	李爱敏,et al."21世纪初科尔沁沙地沙漠化程度变化动态监测".27.4(2007):546-551.