内蒙古赤峰及其周边地区荒漠化变化趋势研究——基于遥感技术中反照率和归一化植被指数特征空间

Study on the Variation Trend of Desertification in Chifeng,Inner Mongolia and Its Surrounding Area——Based on the Albedo and the Characteristic Space of the Normalized Difference Vegetation Index

通过遥感影像来构造反照率(Albedo)和归一化植被指数(NDVI)特征空间是一种提取土地荒漠化信息的有效方法。该研究利用Landsat遥感影像来构造赤峰及周边地区Albedo-NDVI特征空间,分析当地2000和2008年的沙漠化状况。结果表明,随着时间的推移,当地植被覆盖度有所增加,土壤含水量以及沙漠化程度有所改善,政府政策的引导已见成效。

By using remote sensing images to construct Albedo and the normalized difference vegetation index （NDVI） feature space is an effec-tive method to extract the information of land desertification.Using Landsat remote sensing images to construct Chifeng and the surrounding area Albedo-NDVI feature space, the desertification status in 2000 and 2008 was analyzed.The results showed that with the increase of time, the local vegetation coverage was increased,local soil moisture content and desertification degree was improved, the guidance of government policy has been to see results.