基于MODIS数据的宏观土地利用/土地覆盖监测研究

Application Research of MODIS Data in Monitoring Landuse Change

建立土地动态监测系统 ,快速提供各种土地利用变化信息是实现资源保护的基本手段。而及时准确地获取覆盖广的地表影像资料是大范围动态监测的重要环节。介绍了 MODIS影像数据的特点 ,并与其它遥感数据源进行了比较 ,就其在土地利用中的应用进行了探讨。分析了松嫩平原2 0 0 1年 9月 MODIS影像的特征 ,准确地解译出该区在宏观上的土地利用方式 ,为监测该区土地沙化、盐碱化和农作物生长提供了科学依据。

Monitor of dynamic change of land use is a strong means to master situation of resources and environment roundly and in time. Duty of monitoring of land use change was finished by manual work traditionally. So how to get large\|area images accurately and promptly is very important for monitoring of dynamic change in regional scale. The main contents of this article are based on it. MODIS is a imaging spectroradiometer on a series of EOS\|AM1 Satellites. In 1999, with the successful launch of EOS\|AM1 satellite, the MODIS began to send remote sensing data in Dec, 1999. In this paper, we described the characters of MODIS data and compared it with other remote sensing data. Considering its advantages and disadvantages, we proposed the feasibility of using this data to monitor the dynamic changes in large areas and described the applications from three aspects in more details.