干旱区生态环境知识资源中心(Arid): 基于MODIS数据的草原荒漠化年际动态变化研究以内蒙古自治区为例

Arid

	基于MODIS数据的草原荒漠化年际动态变化研究以内蒙古自治区为例
其他题名	Annual Dynamic Variation of Grassland Desertification Based on MODIS Data: An Example from Inner Mongolia
	朱玉霞 1; 覃志豪 1; 徐斌 2
ISSN	1673-5021
出版年	2007
卷号	29 期号:4 页码:2-8
中文摘要	近几十年日益加重的荒漠化已成为内蒙古乃至中国和邻国如韩国、日本的非常严重的环境问题.通过EOS-MODIS遥感数据计算出归一化植被指数(NDVI)和植被覆盖指数(Pv),反演求得荒漠化指数(DI)对内蒙古地区进行荒漠化地区的识别,根据像元数进行统计各种类型的面积.最后我们运用该方法对内蒙古荒漠化进行监测,研究表明可以准确的得到该研究区荒漠化现状分布,同时根据像元统计可以得到荒漠化面积每年以2.2%的速率增大.荒漠化地区的荒漠化程度同样以每年10%的速度加重.结合气象观测的气温和降水数据分析,表明该方法对于荒漠化的监测是可行的,准确性也较高.
英文摘要	The increasingly severe desertification in recent decades has been an important environmental problem for China and also adjacent countries such as Korea and Japan. EOS-MODIS data were applied to evaluate the severity of desertification in Inner Mongolia. A methodology has been proposed to use the red band and near infrared band of MODIS for monitoring/evaluating the desertification on the basis of surface vegetation changes. The vegetation coverage index (VCI) in pixel scale was calculated from normalized difference vegetation index (NDVI), and then applied it to construct the desertification index (DI) for e-valuation of desertification severity. Result from validation with rainfall and temperature data indicated that accuracy of the methodology is acceptable and applicable for desertification severity evaluation. Finally the proposed methodology is applied to the study region of Inner Mongolia for evaluation of desertification severity. The results can best represent the actual status of current desertification in the region. Therefore, it can be conclude that the proposed methodology is feasible for desertification monitoring in Inner Mongolia.
中文关键词	内蒙古 ; 荒漠化指数 ; EOS-MODIS数据
英文关键词	Inner Mongolia Desertification indexf EOS-MODIS data
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:2846486
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/221745
作者单位	1.南京大学国际地球系统科学研究所, 南京, 江苏 210093, 中国; 2.中国农业科学院农业资源与农业区划研究所, 北京 100081, 中国
推荐引用方式 GB/T 7714	朱玉霞,覃志豪,徐斌. 基于MODIS数据的草原荒漠化年际动态变化研究以内蒙古自治区为例[J],2007,29(4):2-8.
APA	朱玉霞,覃志豪,&徐斌.(2007).基于MODIS数据的草原荒漠化年际动态变化研究以内蒙古自治区为例.,29(4),2-8.
MLA	朱玉霞,et al."基于MODIS数据的草原荒漠化年际动态变化研究以内蒙古自治区为例".29.4(2007):2-8.