用MODIS数据监测京津风沙源工程区植被指数的选择及合成

THE SELECTION AND COMPOSING OF THE VEGETATION INDEX IN THE INVESTIGATION INTO THE SOURCE AREA OF SANDSTORM AROUND BEIJING AND TIANJIN

通过对比分析MODIS数据的标准归一化差分植被指数、土壤调节植被指数及增强型植被指数的特点,最终选择标准归一化差分植被指数(NDVI)对工程区进行监测。并阐述了最大合成法合成MODIS植被指数是一种行之有效的方法。

For the purpose of investigating the effects of sandification prevention and control, the MODIS remote sensing data were chosen to investigate the dynamic change of the source area of sandstorm around Beijing and Tianjin. Based on analyzing the characteristics of three main vegetation indexes, namely NDVI, SAVI and EVI, the author finally selected NDVI. The MVC method is also argued to be an effective means to compose the MODIS vegetation index.