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土地变化趋势

Arid

	21世纪初科尔沁沙地沙漠化土地变化趋势
其他题名	Transformation Dynamics of Desertification in Horqin Sandy Land at the Beginning of the 21st Century
	李爱敏; 韩致文; 许健; 马绍休; 黄翠华
ISSN	0375-5444
出版年	2006
卷号	61 期号:9 页码:976-984
中文摘要	以2000年和2005年TM影像为信息源,在建立目视解译标志的基础上,利用GIS的图像、数据处理功能,对科尔沁沙地近5年来土地沙漠化动态变化进行监测.结果表明,科尔沁沙地沙漠化面积由2000年的22423.1 km2变为2005年的22422.4 km2,仅以0.14 km2·a-1的速度减少,表明该区沙漠化面积不断加剧的态势得以控制并趋于相对稳定状态;不同类型土地的沙漠化动态变化程度不一,原沙漠化土地沙漠化程度明显减轻,沙漠化逆转与恶化面积的差值为958.9 km2,但监测期间有113.3 km2非沙漠化土地沙漠化,发展速度为22.7 km2·a-1,这一态势值得引起足够重视.
英文摘要	Visual inteipretation remarks were established by taking TM images in 2000 and 2005 as information source. Then desertification dynamic in Horqin Sandy Land in recent five years is monitored with the help of images and data processing function of GIS. The results showed that desertified land changed from 22423.1 km2 in 2000 to 22422.4 km2 in 2005, only at a reducing rate of 0.14 lem2 -a’1. This indicated that the constant aggravation of the desertification trend in the study area has been basically controlled and tends to be in a relatively stable state. The degree of transformation dynamics of desertification is different for different types of land, desertification degree has been mitigated evidently for the primary desertified land, and the difference is 958.9 km2 between reversal area and deteriorative area. At the same time, there are 113.3 km2 of non-desertified land desertification at a rate of 22.7 km2-a"1. Therefore, great attention should be paid to this phenomenon.
中文关键词	科尔沁沙地 ; 土地沙漠化 ; 遥感监测
英文关键词	Horqin Sandy Land land desertification remote sensing monitoring
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:2424758
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/2XILL650/219521
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	李爱敏,韩致文,许健,等. 21世纪初科尔沁沙地沙漠化土地变化趋势[J]. 中国科学院西北生态环境资源研究院,2006,61(9):976-984.
APA	李爱敏,韩致文,许健,马绍休,&黄翠华.(2006).21世纪初科尔沁沙地沙漠化土地变化趋势.,61(9),976-984.
MLA	李爱敏,et al."21世纪初科尔沁沙地沙漠化土地变化趋势".61.9(2006):976-984.